Ministry of Energy and Energy Industries: Energy Data Hub Naming Conventions & Standard Codes

Ministry of Energy
and Energy Industries
Energy Data Hub Naming Conventions & Standard Codes
July 12, 2016

Confidential
Table of Contents
Table of Contents 2
1 Introduction 5
2 Input Forms 5
2.1 BLOCK STATION 5
2.2 CASING SIZE / GRADE 5
2.3 CATEGORY 19
2.4 CEMENT CLASS 19
2.5 CLASSIFICATION 20
2.6 CLUSTER 20
2.7 COMPLETION FLUID 21
2.8 CONTRACT TYPE 21
2.9 CONTRACTOR 21
2.10 DATA TYPE 24
2.11 DRILLING PROGRAM NUMBER 24
2.12 DRILLING STATUS 25
2.13 ELEVATION REFERENCE 25
2.14 FIELD 26
2.15 FLUID TYPE 34
2.16 GATHERING STATION 34
2.17 GUN TYPE 37
2.18 HEIGHT DETERMINATION METHOD 37
2.19 INJECTION PROJECT 37
2.20 LEASE NUMBER 38
2.21 LESSEE / OWNER 43
2.22 MUD TYPE 45
2.23 OPERATOR 45
2.24 PACKER, PLUG TYPE 47
2.25 PLATFORM 48
2.26 PRODUCTION METHOD 50
2.27 PRODUCTION STATUS 50
2.28 PROJECTION 50
2.29 RIG TYPE 50
2.30 ROYALTY CODE 51
2.31 SALES TO OTHER COMPANIES (PROD3) 51
2.32 SURFACE RIGHT 51
2.33 SURVEY COMPANY 51
2.34 SURVEY TYPE 52
2.35 TUBING SIZE / GRADE 53
2.36 UWI (UNIQUE WELL IDENTIFIER) 57
2.37 WELL LAHEE CLASSIFICATION 58
2.38 WELL NAME 58
Well Nomenclature 58
Exploratory and Semi-exploratory wells: 58
Sidetrack (ST) well: 58
2
X – wells: 58
Re-drilled hole (RD) 60
Lateral and Multilateral Wells 60
Lateral Wells: 60
Multilateral Wells 60
Well Completion 61
Development Wells: 61
Exploration Wells: 61
2.39 WELL STATUS 61

2.40 WINCH TYPE 61
2.41 WORKOVER PROGRAM NUMBER 62
2.42 WORKOVER STATUS 62
2.43 WORKOVER TYPE 62
2.44 EWELLFILE CATEGORY 62
2.45 COMPLETION TYPE 65
3 Bulk Data 66
3.1 BASIC CORE ANALYSIS ACTIVITY TYPE 66
3.2 BULK VOLUME ANALYSIS METHOD 66
3.3 CEMENTING MATERIAL TYPE 67
3.4 CHECKSHOT TIME UNIT 67
3.5 CORE ACQUISITION DEPTH TYPE 67
3.6 CORE ACQUISITION EQUIPMENT 67
3.7 CORE ACTIVITY TYPE 67
3.8 CORE ANALYSIS FLUID TYPE 67
3.9 CORE BARREL TYPE 67
3.10 CORE MEASUREMENT ADJUSTMENT TECHNIQUE 68
3.11 CORE PRESERVATION METHOD 68
3.12 CUTTINGS PRESERVATION TYPE 68
3.13 DIRECTIONAL SURVEY CALCULATION METHOD 68
3.14 DIRECTIONAL SURVEY MODE 68
3.15 DIRECTIONAL SURVEY NORTH REFERENCE 68
3.16 DIRECTIONAL SURVEY POINT TYPE 69
3.17 DIRECTIONAL SURVEY TOOL TYPE 69
3.18 DIRECTIONAL SURVEY TYPE 69
3.19 DISPLACEMENT MATERIAL TYPE 69
3.20 DOWNHOLE FACILITY 69
3.21 FAUNA TYPE 69
3.22 FLUORESCENCE INTENSITY 70
3.23 GRAIN VOLUME ANALYSIS METHOD 70
3.24 LITHOLOGY TYPE 70
3.25 OPERATION STATUS 70
3.26 OPERATION TYPE 70
3.27 OUTCROP TYPE 70
3.28 PERMEABILITY ANALYSIS EQUIPMENT 70
3.29 PERMEABILITY ANALYSIS METHOD 71
3.30 PERMEABILITY CONFINING STRESS ANALYSIS 71
3.31 PORE VOLUME ANALYSIS METHOD 71
3.32 POROSITY ANALYSIS EQUIPMENT 71
3.33 POROSITY TYPE 71
3
3.34 ROCK SAMPLE ANALYSIS 72
3.35 ROCK SAMPLE TYPE 72
3.36 SAMPLE ORIENTATION TYPE 72
3.37 SAMPLE QUALITY 72
3.38 SAMPLE SHOW COLOR 72
3.39 SATURATION ANALYSIS EQUIPMENT 73
3.40 SATURATION ANALYSIS METHOD 73
3.41 SCAL ANALYSIS EQUIPMENT 73
3.42 SCAL ANALYSIS METHOD 73
3.43 SCAL PROPERTY 73
3.44 SHOW DISTRIBUTION 74
3.45 SHOW QUALITY 74
3.46 SHOW TYPE 74
3.47 SLURRY TYPE 74
3.48 VOLUME UNIT OF MEASURE 74
4
1 Introduction
This document contains the naming conventions and standard codes for the Upstream data – Drilling, Workover and Production - being preserved in the
Energy Data Hub’s (EDH) Master Data Store (MDS). It is intended to be used as a reference document for the oil and gas companies when submitting data to
the Ministry of Energy and Energy Affairs (MEEA) with the objective of:
Streamlining the data submission process

Assuring the integrity of the data
Allowing all actors to speak the same language
All items included in this document fall into two (2) categories:
Codes: abbreviations or symbols that represent a specific value, e.g. Field, Workover Status, etc.
Nomenclatures: unique and consistent identifications, which can be assembled by putting together other codes and nomenclatures, e.g. Drilling Program
Number, Well Name, etc.
This document is divided into two (2) main sections:
Input Forms: covers all codes and nomenclatures found in the Drilling, Workover and Production input forms (DRL2, DRL3, DRL4, DRL5, WO1, WO2,
WO3, PROD1, PROD2, PROD3 and PROD4).
Bulk Data: covers all codes found in the standard input formats used to load bulk data into the EDH’s MDS.
Some of the codes and nomenclatures included in the Input Forms section are common to Bulk Data.
The content of this document can change in time as codes and nomenclatures are included, updated or eliminated. The MEEA will be the custodian of the
Naming Conventions and Standard Codes and as such it will be responsible for the maintenance of this document.
2 Input Forms
2.1 BLOCK STATION
Block Stations are surface facilities used in drilling and workover operations on wells. Refer to the table below to view the list of possible values:
Company Block Station Code Block Station Name

TRINMAR B16 Block Station 16
TRINMAR GP1 Block Station GP1
2.2 CASING SIZE / GRADE

This refers to the types of casings used in oilfield operations. They are categorized according to their diameters and weight. See the table below to view the list
of possible values:
Outside Diameter Inches Nominal Weight LB/FT Grade Inside Diameter Inches
10.75 32.75 H-40 10.192
10.75 40.5 H-40 10.05
10.75 40.5 J-55 10.05
10.75 40.5 K-55 10.05
10.75 40.5 M-65 10.05
10.75 45.5 J-55 9.95
10.75 45.5 K-55 9.95
10.75 45.5 M-65 9.95
10.75 51 C-90 9.85
10.75 51 C-95 9.85
10.75 51 J-55 9.85
10.75 51 K-55 9.85
10.75 51 L-80 9.85
10.75 51 M-65 9.85
10.75 51 N-80 9.85
10.75 51 P-110 9.85
10.75 51 T-95 9.85
10.75 55.5 C-90 9.76
10.75 55.5 C-95 9.76
10.75 55.5 L-80 9.76
10.75 55.5 M-65 9.85
10.75 55.5 N-80 9.76
10.75 55.5 P-110 9.76
10.75 55.5 T-95 9.76
10.75 60.7 C-90 9.66
5
10.75 60.7 P-110 9.66
10.75 60.7 Q-125 9.66
10.75 60.7 T-95 9.66
10.75 65.7 C-90 9.56
10.75 65.7 P-110 9.56
10.75 65.7 Q-125 9.56
10.75 65.7 T-95 9.56
10.75 73.2 C-90 9.406
10.75 73.2 T-95 9.406
10.75 79.2 C-90 9.282
10.75 79.2 T-95 9.282
10.75 85.3 C-90 9.156
10.75 85.3 T-95 9.156
11.75 42 H-40 11.084
11.75 47 J-55 11
11.75 47 K-55 11
11.75 47 M-65 11
11.75 54 J-55 10.88
11.75 54 K-55 10.88
11.75 54 M-65 10.88
11.75 60 C-90 10.772
11.75 60 C-95 10.772
11.75 60 J-55 10.772
11.75 60 K-55 10.772
11.75 60 L-80 10.772
11.75 60 M-65 10.772
11.75 60 N-80 10.772
11.75 60 P-110 10.772
11.75 60 Q-125 10.772
11.75 60 T-95 10.772
11.75 65 C-90 10.682
11.75 65 C-95 10.682
11.75 65 L-80 10.682
11.75 65 N-80 10.682
11.75 65 P-110 10.682
11.75 65 Q-125 10.682
11.75 65 T-95 10.682
11.75 71 C-90 10.586
11.75 71 C-95 10.586
11.75 71 HCP-110 10.586
11.75 71 L-80 10.586
11.75 71 N-80 10.586
11.75 71 P-110 10.586
11.75 71 Q-125 10.586
11.75 71 T-95 10.586
11.875 71.8 HCP-110 10.711
11.875 71.8 HCQ-125 10.711
13.375 48 H-40 12.715
13.375 54.5 J-55 12.615
13.375 54.5 K-55 12.615
13.375 54.5 M-65 12.615
13.375 61 J-55 12.515
13.375 61 K-55 12.515
13.375 61 M-65 12.515
13.375 68 C-90 12.415
13.375 68 C-95 12.415
13.375 68 J-55 12.415
13.375 68 K-55 12.415
13.375 68 L-80 12.415
13.375 68 M-65 12.415
13.375 68 N-80 12.415
13.375 68 P-110 12.415
13.375 68 T-95 12.415
13.375 72 C-90 12.347
6
13.375 72 C-95 12.347
13.375 72 HCL-80 12.347
13.375 72 HCN-80 12.35
13.375 72 HCP-110 12.347
13.375 72 HCQ-125 12.347
13.375 72 L-80 12.347
13.375 72 N-80 12.347
13.375 72 P-110 12.347
13.375 72 Q-125 12.347
13.375 72 T-95 12.347
13.375 72.0 J-55 12.347
13.625 88.2 HCP-110 12.375
13.625 88.2 HCQ-125 12.375
13.625 88.2 N-80 12.375
13.625 88.2 P-110 12.375
13.625 88.2 Q-125 12.375
14 115 P-110 12.376
14 115 SM-95S 12.375
14 92.68 Q-125 12.7
14 92.7 P-110 12.72
14 93 P-110 12.7
14 93 Q-125 12.7
16 109 C-95 14.688
16 109 HCQ-125 14.688
16 109 J-55 14.688
16 109 K-55 14.688
16 109 L-80 14.688
16 109 N-80 14.688
16 109 P-110 14.688
16 109 Q-125 14.688
16 65 H-40 15.25
16 75 J-55 15.124
16 75 K-55 15.124
16 75 M-65 15.124
16 84 J-55 15.01
16 84 K-55 15.01
16 84 L-80 15.01
16 84 M-65 15.01
16 84 N-80 15.01
16 84 P-110 15.01
16 97 P-110 14.85
17.5 82 N-80 13.375
18 117 P-110 16.75
18 94 P-110 17
18.625 114 K-55 17.467
18.625 87.5 H-40 17.755
18.625 87.5 J-55 17.755
18.625 87.5 K-55 17.755
18.625 87.5 M-65 17.755
18.625 96.5 K-55
20 106.5 J-55 19
20 106.5 K-55 19
20 106.5 M-65 19
20 129 X-56 18.75
20 129.33 X-56 18.75
20 133 J-55 18.73
20 133 K-55 18.73
20 133 X-56
20 166 X-56 18.38
20 166.56 X-80 18.376
20 94 H-40 19.124
20 94 J-55 19.124
20 94 K-55 19.124
20 94 M-65 19.124
7
22 170.16 X-56 20.5
22 224 X-80 20
3 10.5 J-55
30 309 X-52 28
30 309.7 X-56 28
30 309.72 X-65
30 310 X-52 28
30 310 X-56 28
30 310 X-65 28
30 457 X-52 27
30 457 X-56 27
36 310 X-52
36 373.8 X-56 34
36 448 5L-B X 52
36 464.35 5L-B 33.5
36 552.5 X-56 33
36 553.2 X-80 33
4.5 10.5 J-55 4.052
4.5 10.5 J-55 4.052
4.5 10.5 K-55 4.052
4.5 10.5 K-55 4.052
4.5 10.5 M-65 4.052
4.5 10.5 M-65 4.052
4.5 11.6 C-90 4
4.5 11.6 C-90 4
4.5 11.6 C-95 4
4.5 11.6 C-95 4
4.5 11.6 J-55 4
4.5 11.6 J-55 4
4.5 11.6 K-55 4
4.5 11.6 K-55 4
4.5 11.6 L-80 4
4.5 11.6 L-80 4
4.5 11.6 M-65 4
4.5 11.6 M-65 4
4.5 11.6 N-80 4
4.5 11.6 N-80 4
4.5 11.6 P-110 4
4.5 11.6 P-110 4
4.5 11.6 T-95 4
4.5 11.6 T-95 4
4.5 12.6 N-80 3.958
4.5 12.6 N-80 3.958
4.5 13.5 C-90 3.92
4.5 13.5 C-90 3.92
4.5 13.5 C-95 3.92
4.5 13.5 C-95 3.92
4.5 13.5 L-80 3.92
4.5 13.5 L-80 3.92
4.5 13.5 M-65 3.92
4.5 13.5 M-65 3.92
4.5 13.5 N-80 3.92
4.5 13.5 N-80 3.92
4.5 13.5 P-110 3.92
4.5 13.5 P-110 3.92
4.5 13.5 T-95 3.92
4.5 13.5 T-95 3.92
4.5 15.1 P-110 3.826
4.5 15.1 P-110 3.826
4.5 15.1 Q-125 3.826
4.5 15.1 Q-125 3.826
4.5 9.5 H-40 4.09
4.5 9.5 H-40 4.09
4.5 9.5 J-55 4.09
8
4.5 9.5 J-55 4.09
4.5 9.5 K-55 4.09
4.5 9.5 K-55 4.09
4.5 9.5 M-65 4.09
4.5 9.5 M-65 4.09
42 438.29 5L-B 40
42 544.52 5L-B 39.5
42 554.01 GRADE-B 39.5
48 624.11 GRADE-B 46.75
5 11.5 J-55 4.56
5 11.5 J-55 4.56
5 11.5 K-55 4.56
5 11.5 K-55 4.56
5 11.5 M-65 4.56
5 11.5 M-65 4.56
5 13 J-55 4.494
5 13 J-55 4.494
5 13 K-55 4.494
5 13 K-55 4.494
5 13 M-65 4.494
5 13 M-65 4.494
5 15 C-90 4.408
5 15 C-90 4.408
5 15 C-95 4.408
5 15 C-95 4.408
5 15 J-55 4.408
5 15 J-55 4.408
5 15 K-55 4.408
5 15 K-55 4.408
5 15 L-80 4.408
5 15 L-80 4.408
5 15 M-65 4.408
5 15 M-65 4.408
5 15 N-80 4.408
5 15 N-80 4.408
5 15 P-110 4.408
5 15 P-110 4.408
5 15 T-95 4.408
5 15 T-95 4.408
5 18 C-90 4.276
5 18 C-90 4.276
5 18 C-95 4.276
5 18 C-95 4.276
5 18 L-80 4.276
5 18 L-80 4.276
5 18 M-65 4.276
5 18 M-65 4.276
5 18 N-80 4.276
5 18 N-80 4.276
5 18 P-110 4.276
5 18 P-110 4.276
5 18 Q-125 4.276
5 18 Q-125 4.276
5 18 T-95 4.276
5 18 T-95 4.276
5 19.5 E 4.276
5 19.5 E 4.276
5 21.4 C-90 4.126
5 21.4 C-90 4.126
5 21.4 C-95 4.126
5 21.4 C-95 4.126
5 21.4 L-80 4.126
5 21.4 L-80 4.126
5 21.4 M-65 4.126
9
5 21.4 M-65 4.126
5 21.4 N-80 4.126
5 21.4 N-80 4.126
5 21.4 P-110 4.126
5 21.4 P-110 4.126
5 21.4 Q-125 4.126
5 21.4 Q-125 4.126
5 21.4 T-95 4.126
5 21.4 T-95 4.126
5 23.2 C-90 4.044
5 23.2 C-90 4.044
5 23.2 C-95 4.044
5 23.2 C-95 4.044
5 23.2 L-80 4.044
5 23.2 L-80 4.044
5 23.2 N-80 4.044
5 23.2 N-80 4.044
5 23.2 P-110 4.044
5 23.2 P-110 4.044
5 23.2 Q-125 4.044
5 23.2 Q-125 4.044
5 23.2 T-95 4.044
5 23.2 T-95 4.044
5 24.1 C-90 4
5 24.1 C-90 4
5 24.1 C-95 4
5 24.1 C-95 4
5 24.1 L-80 4
5 24.1 L-80 4
5 24.1 N-80 4
5 24.1 N-80 4
5 24.1 P-110 4
5 24.1 P-110 4
5 24.1 Q-125 4
5 24.1 Q-125 4
5 24.1 T-95 4
5 24.1 T-95 4
5.25 15.5 J-55
5.5 14 H-40 5.012
5.5 14 H-40 5.012
5.5 14 J-55 5.012
5.5 14 J-55 5.012
5.5 14 K-55 5.012
5.5 14 K-55 5.012
5.5 14 M-65 5.012
5.5 14 M-65 5.012
5.5 14.5 J-55 5.012
5.5 14.5 J-55 5.012
5.5 15.5 J-55 4.95
5.5 15.5 J-55 4.95
5.5 15.5 K-55 4.95
5.5 15.5 K-55 4.95
5.5 15.5 M-65 4.95
5.5 15.5 M-65 4.95
5.5 17 C-90 4.892
5.5 17 C-90 4.892
5.5 17 C-95 4.892
5.5 17 C-95 4.892
5.5 17 J-55 4.892
5.5 17 J-55 4.892
5.5 17 K-55 4.892
5.5 17 K-55 4.892
5.5 17 L-80 4.892
5.5 17 L-80 4.892
10
5.5 17 M-65 4.892
5.5 17 M-65 4.892
5.5 17 N-80 4.892
5.5 17 N-80 4.892
5.5 17 P-110 4.892
5.5 17 P-110 4.892
5.5 17 T-95 4.892
5.5 17 T-95 4.892
5.5 17 VAM
5.5 20 C-90 4.778
5.5 20 C-90 4.778
5.5 20 C-95 4.778
5.5 20 C-95 4.778
5.5 20 L-80 4.778
5.5 20 L-80 4.778
5.5 20 M-65 4.778
5.5 20 M-65 4.778
5.5 20 N-80 4.778
5.5 20 N-80 4.778
5.5 20 P-110 4.778
5.5 20 P-110 4.778
5.5 20 T-95 4.778
5.5 20 T-95 4.778
5.5 23 C-90 4.67
5.5 23 C-90 4.67
5.5 23 C-95 4.67
5.5 23 C-95 4.67
5.5 23 L-80 4.67
5.5 23 L-80 4.67
5.5 23 M-65 4.67
5.5 23 M-65 4.67
5.5 23 N-80 4.67
5.5 23 N-80 4.67
5.5 23 P-110 4.67
5.5 23 P-110 4.67
5.5 23 Q-125 4.67
5.5 23 Q-125 4.67
5.5 23 T-95 4.67
5.5 23 T-95 4.67
5.5 26.8 C-90 4.5
5.5 26.8 C-90 4.5
5.5 26.8 T-95 4.5
5.5 26.8 T-95 4.5
5.5 29.7 C-90 4.376
5.5 29.7 C-90 4.376
5.5 29.7 T-95 4.376
5.5 29.7 T-95 4.376
5.5 32.6 C-90 4.25
5.5 32.6 C-90 4.25
5.5 32.6 T-95 4.25
5.5 32.6 T-95 4.25
5.5 35.3 C-90 4.126
5.5 35.3 C-90 4.126
5.5 35.3 T-95 4.126
5.5 35.3 T-95 4.126
5.5 38 C-90 4
5.5 38 C-90 4
5.5 38 T-95 4
5.5 38 T-95 4
5.5 40.5 C-90 3.876
5.5 40.5 C-90 3.876
5.5 40.5 T-95 3.876
5.5 40.5 T-95 3.876
5.5 43.1 C-90 3.75
11
5.5 43.1 C-90 3.75
5.5 43.1 T-95 3.75
5.5 43.1 T-95 3.75
5.75 19.5 J-55 5.090
6.625 20 H-40 6.049
6.625 20 H-40 6.049
6.625 20 J-55 6.049
6.625 20 J-55 6.049
6.625 20 K-55 6.049
6.625 20 K-55 6.049
6.625 20 M-65 6.049
6.625 20 M-65 6.049
6.625 24 C-90 5.921
6.625 24 C-90 5.921
6.625 24 C-95 5.921
6.625 24 C-95 5.921
6.625 24 J-55 5.921
6.625 24 J-55 5.921
6.625 24 K-55 5.921
6.625 24 K-55 5.921
6.625 24 L-80 5.921
6.625 24 L-80 5.921
6.625 24 M-65 5.921
6.625 24 M-65 5.921
6.625 24 N-80 5.921
6.625 24 N-80 5.921
6.625 24 P-110 5.921
6.625 24 P-110 5.921
6.625 24 T-95 5.921
6.625 24 T-95 5.921
6.625 28 C-90 5.791
6.625 28 C-90 5.791
6.625 28 C-95 5.791
6.625 28 C-95 5.791
6.625 28 L-80 5.791
6.625 28 L-80 5.791
6.625 28 M-65 5.791
6.625 28 M-65 5.791
6.625 28 N-80 5.791
6.625 28 N-80 5.791
6.625 28 P-110 5.791
6.625 28 P-110 5.791
6.625 28 T-95 5.791
6.625 28 T-95 5.791
6.625 32 C-90 5.675
6.625 32 C-90 5.675
6.625 32 C-95 5.675
6.625 32 C-95 5.675
6.625 32 L-80 5.675
6.625 32 L-80 5.675
6.625 32 N-80 5.675
6.625 32 N-80 5.675
6.625 32 P-110 5.675
6.625 32 P-110 5.675
6.625 32 Q-125 5.675
6.625 32 Q-125 5.675
6.625 32 T-95 5.675
6.625 32 T-95 5.675
7 17 H-40 6.538
7 17 H-40 6.538
7 20 H-40 6.456
7 20 H-40 6.456
7 20 J-55 6.456
7 20 J-55 6.456
12
7 20 K-55 6.456
7 20 K-55 6.456
7 20 M-65 6.456
7 20 M-65 6.456
7 23 C-90 6.366
7 23 C-90 6.366
7 23 C-95 6.366
7 23 C-95 6.366
7 23 J-55 6.366
7 23 J-55 6.366
7 23 K-55 6.366
7 23 K-55 6.366
7 23 L-80 6.366
7 23 L-80 6.366
7 23 M-65 6.366
7 23 M-65 6.366
7 23 N-80 6.366
7 23 N-80 6.366
7 23 T-95 6.366
7 23 T-95 6.366
7 26 C-90 6.276
7 26 C-90 6.276
7 26 C-95 6.276
7 26 C-95 6.276
7 26 J-55 6.276
7 26 J-55 6.276
7 26 K-55 6.276
7 26 K-55 6.276
7 26 L-80 6.276
7 26 L-80 6.276
7 26 M-65 6.276
7 26 M-65 6.276
7 26 N-80 6.276
7 26 N-80 6.276
7 26 P-110 6.276
7 26 P-110 6.276
7 26 T-95 6.276
7 26 T-95 6.276
7 26.0 N-80 6.276
7 29 C-90 6.184
7 29 C-90 6.184
7 29 C-95 6.184
7 29 C-95 6.184
7 29 L-80 6.184
7 29 L-80 6.184
7 29 M-65 6.184
7 29 M-65 6.184
7 29 N-80 6.184
7 29 N-80 6.184
7 29 P-110 6.184
7 29 P-110 6.184
7 29 T-95 6.184
7 29 T-95 6.184
7 32 C-90 6.094
7 32 C-90 6.094
7 32 C-95 6.094
7 32 C-95 6.094
7 32 L-80 6.094
7 32 L-80 6.094
7 32 M-65 6.094
7 32 M-65 6.094
7 32 N-80 6.094
7 32 N-80 6.094
7 32 P-110 6.094
13
7 32 P-110 6.094
7 32 T-95 6.094
7 32 T-95 6.094
7 35 C-90 6.004
7 35 C-90 6.004
7 35 C-95 6.004
7 35 C-95 6.004
7 35 L-80 6.004
7 35 L-80 6.004
7 35 N-80 6.004
7 35 N-80 6.004
7 35 P-110 6.004
7 35 P-110 6.004
7 35 Q-125 6.004
7 35 Q-125 6.004
7 35 T-95 6.004
7 35 T-95 6.004
7 38 C-90 5.92
7 38 C-90 5.92
7 38 C-95 5.92
7 38 C-95 5.92
7 38 L-80 5.92
7 38 L-80 5.92
7 38 N-80 5.92
7 38 N-80 5.92
7 38 P-110 5.92
7 38 P-110 5.92
7 38 Q-125 5.92
7 38 Q-125 5.92
7 38 T-95 5.92
7 38 T-95 5.92
7 42.7 C-90 5.75
7 42.7 C-90 5.75
7 42.7 T-95 5.75
7 42.7 T-95 5.75
7 46.4 C-90 5.626
7 46.4 C-90 5.626
7 46.4 T-95 5.626
7 46.4 T-95 5.626
7 50.1 C-90 5.5
7 50.1 C-90 5.5
7 50.1 T-95 5.5
7 50.1 T-95 5.5
7 53.6 C-90 5.376
7 53.6 C-90 5.376
7 53.6 T-95 5.376
7 53.6 T-95 5.376
7 57.1 C-90 5.25
7 57.1 C-90 5.25
7 57.1 T-95 5.25
7 57.1 T-95 5.25
7.625 24 H-40 7.025
7.625 24 H-40 7.025
7.625 26.4 C-90 6.969
7.625 26.4 C-90 6.969
7.625 26.4 C-95 6.969
7.625 26.4 C-95 6.969
7.625 26.4 J-55 6.969
7.625 26.4 J-55 6.969
7.625 26.4 K-55 6.969
7.625 26.4 K-55 6.969
7.625 26.4 L-80 6.969
7.625 26.4 L-80 6.969
7.625 26.4 M-65 6.969
14
7.625 26.4 M-65 6.969
7.625 26.4 N-80 6.969
7.625 26.4 N-80 6.969
7.625 26.4 T-95 6.969
7.625 26.4 T-95 6.969
7.625 29.7 C-90 6.875
7.625 29.7 C-90 6.875
7.625 29.7 C-95 6.875
7.625 29.7 C-95 6.875
7.625 29.7 HCP-110 6.875
7.625 29.7 L-80 6.875
7.625 29.7 L-80 6.875
7.625 29.7 M-65 6.875
7.625 29.7 M-65 6.875
7.625 29.7 N-80 6.875
7.625 29.7 N-80 6.875
7.625 29.7 P-110 6.875
7.625 29.7 P-110 6.875
7.625 29.7 T-95 6.875
7.625 29.7 T-95 6.875
7.625 33.7 C-90 6.765
7.625 33.7 C-90 6.765
7.625 33.7 C-95 6.765
7.625 33.7 C-95 6.765
7.625 33.7 HCP-110 6.765
7.625 33.7 HCQ-125 6.765
7.625 33.7 L-80 6.765
7.625 33.7 L-80 6.765
7.625 33.7 M-65 6.765
7.625 33.7 M-65 6.765
7.625 33.7 N-80 6.765
7.625 33.7 N-80 6.765
7.625 33.7 P-110 6.765
7.625 33.7 P-110 6.765
7.625 33.7 T-95 6.765
7.625 33.7 T-95 6.765
7.625 39 13CR80 6.625
7.625 39 13CR80 6.625
7.625 39 C-90 6.625
7.625 39 C-90 6.625
7.625 39 C-95 6.625
7.625 39 C-95 6.625
7.625 39 L-80 6.625
7.625 39 L-80 6.625
7.625 39 N-80 6.625
7.625 39 N-80 6.625
7.625 39 P-110 6.625
7.625 39 P-110 6.625
7.625 39 Q-125 6.625
7.625 39 Q-125 6.625
7.625 39 T-95 6.625
7.625 39 T-95 6.625
7.625 42.8 C-90 6.501
7.625 42.8 C-90 6.501
7.625 42.8 C-95 6.501
7.625 42.8 C-95 6.501
7.625 42.8 L-80 6.501
7.625 42.8 L-80 6.501
7.625 42.8 N-80 6.501
7.625 42.8 N-80 6.501
7.625 42.8 P-110 6.501
7.625 42.8 P-110 6.501
7.625 42.8 Q-125 6.501
7.625 42.8 Q-125 6.501
15
7.625 42.8 T-95 6.501
7.625 42.8 T-95 6.501
7.625 45.3 C-90 6.435
7.625 45.3 C-90 6.435
7.625 45.3 C-95 6.435
7.625 45.3 C-95 6.435
7.625 45.3 L-80 6.435
7.625 45.3 L-80 6.435
7.625 45.3 N-80 6.435
7.625 45.3 N-80 6.435
7.625 45.3 P-110 6.435
7.625 45.3 P-110 6.435
7.625 45.3 Q-125 6.435
7.625 45.3 Q-125 6.435
7.625 45.3 T-95 6.435
7.625 45.3 T-95 6.435
7.625 47.1 C-90 6.375
7.625 47.1 C-90 6.375
7.625 47.1 C-95 6.375
7.625 47.1 C-95 6.375
7.625 47.1 L-80 6.375
7.625 47.1 L-80 6.375
7.625 47.1 N-80 6.375
7.625 47.1 N-80 6.375
7.625 47.1 P-110 6.375
7.625 47.1 P-110 6.375
7.625 47.1 Q-125 6.375
7.625 47.1 Q-125 6.375
7.625 47.1 T-95 6.375
7.625 47.1 T-95 6.375
7.625 51.2 C-90 6.251
7.625 51.2 C-90 6.251
7.625 51.2 T-95 6.251
7.625 51.2 T-95 6.251
7.625 55.3 C-90 6.125
7.625 55.3 C-90 6.125
7.625 55.3 T-95 6.125
7.625 55.3 T-95 6.125
7.75 46.1 C-90 6.56
7.75 46.1 C-90 6.56
7.75 46.1 C-95 6.56
7.75 46.1 C-95 6.56
7.75 46.1 L-80 6.56
7.75 46.1 L-80 6.56
7.75 46.1 N-80 6.56
7.75 46.1 N-80 6.56
7.75 46.1 P-110 6.56
7.75 46.1 P-110 6.56
7.75 46.1 Q-125 6.56
7.75 46.1 Q-125 6.56
7.75 46.1 T-95 6.56
7.75 46.1 T-95 6.56
8.625 24 J-55 8.097
8.625 24 J-55 8.097
8.625 24 K-55 8.097
8.625 24 K-55 8.097
8.625 24 M-65 8.097
8.625 24 M-65 8.097
8.625 28 H-40 8.017
8.625 28 H-40 8.017
8.625 28 M-65 8.017
8.625 28 M-65 8.017
8.625 32 H-40 7.921
8.625 32 H-40 7.921
16
8.625 32 J-55 7.921
8.625 32 J-55 7.921
8.625 32 K-55 7.921
8.625 32 K-55 7.921
8.625 32 M-65 7.921
8.625 32 M-65 7.921
8.625 36 C-90 7.825
8.625 36 C-90 7.825
8.625 36 C-95 7.825
8.625 36 C-95 7.825
8.625 36 J-55 7.825
8.625 36 J-55 7.825
8.625 36 K-55 7.825
8.625 36 K-55 7.825
8.625 36 L-80 7.825
8.625 36 L-80 7.825
8.625 36 M-65 7.825
8.625 36 M-65 7.825
8.625 36 N-80 7.825
8.625 36 N-80 7.825
8.625 36 T-95 7.825
8.625 36 T-95 7.825
8.625 40 C-90 7.725
8.625 40 C-90 7.725
8.625 40 C-95 7.725
8.625 40 C-95 7.725
8.625 40 L-80 7.725
8.625 40 L-80 7.725
8.625 40 M-65 7.725
8.625 40 M-65 7.725
8.625 40 N-80 7.725
8.625 40 N-80 7.725
8.625 40 P-110 7.725
8.625 40 P-110 7.725
8.625 40 T-95 7.725
8.625 40 T-95 7.725
8.625 44 C-90 7.625
8.625 44 C-90 7.625
8.625 44 C-95 7.625
8.625 44 C-95 7.625
8.625 44 L-80 7.625
8.625 44 L-80 7.625
8.625 44 N-80 7.625
8.625 44 N-80 7.625
8.625 44 P-110 7.625
8.625 44 P-110 7.625
8.625 44 T-95 7.625
8.625 44 T-95 7.625
8.625 49 C-90 7.511
8.625 49 C-90 7.511
8.625 49 C-95 7.511
8.625 49 C-95 7.511
8.625 49 L-80 7.511
8.625 49 L-80 7.511
8.625 49 N-80 7.511
8.625 49 N-80 7.511
8.625 49 P-110 7.511
8.625 49 P-110 7.511
8.625 49 Q-125 7.511
8.625 49 Q-125 7.511
8.625 49 T-95 7.511
8.625 49 T-95 7.511
9.625 23 J-55
9.625 32.3 H-40 9.001
17
9.625 32.3 H-40 9.001
9.625 32.5 J-55
9.625 36 H-40 8.921
9.625 36 H-40 8.921
9.625 36 J-55 8.921
9.625 36 J-55 8.921
9.625 36 K-55 8.921
9.625 36 K-55 8.921
9.625 36 M-65 8.921
9.625 36 M-65 8.921
9.625 40 C-90 8.835
9.625 40 C-90 8.835
9.625 40 C-95 8.835
9.625 40 C-95 8.835
9.625 40 J-55 8.835
9.625 40 J-55 8.835
9.625 40 K-55 8.835
9.625 40 K-55 8.835
9.625 40 L-80 8.835
9.625 40 L-80 8.835
9.625 40 M-65 8.835
9.625 40 M-65 8.835
9.625 40 N-80 8.835
9.625 40 N-80 8.835
9.625 40 T-95 8.835
9.625 40 T-95 8.835
9.625 43.5 C-90 8.755
9.625 43.5 C-90 8.755
9.625 43.5 C-95 8.755
9.625 43.5 C-95 8.755
9.625 43.5 L-80 8.755
9.625 43.5 L-80 8.755
9.625 43.5 M-65 8.755
9.625 43.5 M-65 8.755
9.625 43.5 N-80 8.755
9.625 43.5 N-80 8.755
9.625 43.5 P-110 8.755
9.625 43.5 P-110 8.755
9.625 43.5 T-95 8.755
9.625 43.5 T-95 8.755
9.625 47 C-90 8.681
9.625 47 C-90 8.681
9.625 47 C-95 8.681
9.625 47 C-95 8.681
9.625 47 HCP-110 8.681
9.625 47 L-80 8.681
9.625 47 L-80 8.681
9.625 47 M-65 8.681
9.625 47 M-65 8.681
9.625 47 N-80 8.681
9.625 47 N-80 8.681
9.625 47 P-110 8.681
9.625 47 P-110 8.681
9.625 47 Q-125 8.681
9.625 47 Q-125 8.681
9.625 47 T-95 8.681
9.625 47 T-95 8.681
9.625 47 Tenaris MS28 XT/XC 8.681
9.625 47 Tenaris MS28 XT/XC 8.681
9.625 53.5 C-90 8.535
9.625 53.5 C-90 8.535
9.625 53.5 C-95 8.535
9.625 53.5 C-95 8.535
9.625 53.5 HCP-110 8.535
18
9.625 53.5 HCQ-125 8.535
9.625 53.5 L-80 8.535
9.625 53.5 L-80 8.535
9.625 53.5 N-80 8.535
9.625 53.5 N-80 8.535
9.625 53.5 P-110 8.535
9.625 53.5 P-110 8.535
9.625 53.5 Q-125 8.535
9.625 53.5 Q-125 8.535
9.625 53.5 T-95 8.535
9.625 53.5 T-95 8.535
9.625 54.5 J-55
9.625 58.4 C-90 8.435
9.625 58.4 C-90 8.435
9.625 58.4 C-95 8.435
9.625 58.4 C-95 8.435
9.625 58.4 L-80 8.435
9.625 58.4 L-80 8.435
9.625 58.4 N-80 8.435
9.625 58.4 N-80 8.435
9.625 58.4 P-110 8.435
9.625 58.4 P-110 8.435
9.625 58.4 Q-125 8.435
9.625 58.4 Q-125 8.435
9.625 58.4 T-95 8.435
9.625 58.4 T-95 8.435
9.625 59.4 C-90 8.407
9.625 59.4 C-90 8.407
9.625 59.4 T-95 8.407
9.625 59.4 T-95 8.407
9.625 64.9 C-90 8.281
9.625 64.9 C-90 8.281
9.625 64.9 T-95 8.281
9.625 64.9 T-95 8.281
9.625 70.3 C-90 8.157
9.625 70.3 C-90 8.157
9.625 70.3 T-95 8.157
9.625 70.3 T-95 8.157
9.625 75.6 C-90 8.031
9.625 75.6 C-90 8.031
9.625 75.6 T-95 8.031
9.625 75.6 T-95 8.031
9.875 62.8 Q-125 8.625
9.875 62.8 Q-125 8.625
9.875 62.8 TN-110SS 8.625
9.875 62.8 TN-110SS 8.625
NA NA NA NA
OPEN OPEN OPEN OPEN
2.3 CATEGORY
This refers to the categories of information. Refer to the table below to view the list of possible values:
ID NAME
Executive Information Executive Information
Technical Information Technical Information
2.4 CEMENT CLASS

This is the classification of cement according to its composition. Refer to the table below to view the list of possible values:
Cement
Cement Class Description
Class Code
DYK-A Dykerhoff Class A
DYK-B Dykerhoff Class B
19
Cement
Cement Class Description
Class Code
DYK-C Dykerhoff Class C
DYK-D Dykerhoff Class D
DYK-E Dykerhoff Class E
DYK-F Dykerhoff Class F
DYK-G Dykerhoff Class G
DYK-H Dykerhoff Class H
Halliburton brand cements: Micro Matrix, Pozmix A,Pozmix 140, Pozmix 140 with salt. Pozmix 140 with Barite, Halliburton LIGHT
HAL-A
cement and Halliburton. LIGHT cement with Econolite. Class A
HAL-B
cement and Halliburton. LIGHT cement with Econolite. Class B
HAL-C
cement and Halliburton. LIGHT cement with Econolite. Class C
HAL-D
cement and Halliburton. LIGHT cement with Econolite. Class D
HAL-E
cement and Halliburton. LIGHT cement with Econolite. Class E
HAL-F
cement and Halliburton. LIGHT cement with Econolite. Class F
HAL-G
cement and Halliburton. LIGHT cement with Econolite. Class G
HAL-H
cement and Halliburton. LIGHT cement with Econolite. Class H
NA Cementation Make or Class Not Available
SLB-A Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class A
SLB-B Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class B
SLB-C Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class C
SLB-D Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class D
SLB-E Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class E
SLB-F Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class F
SLB-G Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class G
SLB-H Schlumberger brand cements: DeepCRETE, CemCRETE, LiteCRETE, DensCRETE, UL LiteCRETE. Class H
TCL-A Trinidad Cement Limited (TCL) Class A
TCL-B Trinidad Cement Limited (TCL) Class B
TCL-C Trinidad Cement Limited (TCL) Class C
TCL-D Trinidad Cement Limited (TCL) Class D
TCL-E Trinidad Cement Limited (TCL) Class E
TCL-F Trinidad Cement Limited (TCL) Class F
TCL-G Trinidad Cement Limited (TCL) Class G
TCL-H Trinidad Cement Limited (TCL) Class H
2.5 CLASSIFICATION
This classifies information under various headings. Refer to the table below to view the list of possible values:
ID NAME
Confidential Confidential
Private Private
Public Public
Secret Secret
2.6 CLUSTER
Clusters are surface facilities used in drilling and workover operations on wells. Refer to the table below to view the list of possible values:
CLUSTER CODE CLUSTER NAME

CL1 Cluster 1
CL10 Cluster 10
CL11 Cluster 11
CL12 Cluster 12
CL13 Cluster 13
CL14 Cluster 14
CL15 Cluster 15
CL16 Cluster 16
CL17 Cluster 17
CL18 Cluster 18
CL19 Cluster 19
20
CLUSTER CODE CLUSTER NAME
CL2 Cluster 2
CL20 Cluster 20
CL21 Cluster 21
CL22 Cluster 22
CL23 Cluster 23
CL24 Cluster 24
CL25 Cluster 25
CL26 Cluster 26
CL28 Cluster 28
CL29 Cluster 29
CL3 Cluster 3
CL30 Cluster 30
CL31 Cluster 31
CL32 Cluster 32
CL34 Cluster 34
CL35 Cluster 35
CL4 Cluster 4
CL5 Cluster 5
CL523 Cluster 523
CL6 Cluster 6
CL679 Cluster 679
CL7 Cluster 7
CL8 Cluster 8
CL9 Cluster 9
TSC Three Slot Cluster
2.7 COMPLETION FLUID

This could be any chemical used in the well completion process. Refer to the table below to view the list of possible values:
COMPLETION FLUID CODE COMPLETION FLUID NAME

CB Calcium Bromide
CB/ZB Calcium Bromide/Zinc Bromide
CC Calcium Chloride
CC/CB Calcium Chloride/Calcium Bromide
CC/CB/ZB Calc Chloride/Calc Bromide/Zinc Bromide
CD Crude
DS Diesel
FW Formation Water
LEG Legacy
LIGNO Lignosulphonate
LO Light oil
LTSBM Low Toxic Synthetic Base Mud
N/A N/A
PB Potassium Bromide
PB/PC Potassium Bromide/Potassium Chloride
PC Potassium Chloride
SB Sodium Bromide
SB/SC Sodium Bromide/Sodium Chloride
SC Sodium Chloride
SC/CC Sodium Chloride/Calcium Chloride
SC/PC Sodium Chloride/Potassium Chloride
WB Sea Water
WB_FW Fresh Water
2.8 CONTRACT TYPE

This data element describes the agreement established between operators and contractors. Refer to the table below to view the list of possible values:
CONTRACT TYPE CODE CONTRACT TYPE NAME

F Full
L Labour
2.9 CONTRACTOR
A contractor is an oilfield service company that undertakes a contract with operators for specific jobs, such as cementing, logging, transportation, etc. Refer to
21
the table below to view the list of possible values:
CONTRACTOR CODE CONTRACTOR NAME

ADWL Antilles Drilling and Workover Limited
AMACL Ansa Mc Al Chemicals Limited
AMS Atlantic Maritime Services International
ASL Altech Services Limited
ASL1 Anfield Services Limited
BCL Bristow Caribbean Limited
BEGL Bayfield Energy Galeota Limited
BHTL Baker Hughes (Trinidad) Limited
BSI BJ Services International S.A
BTL Baroid Trinidad Limited
CAK Carl King
CDL Cliffs Drilling Limited
CDTOL Cliffs Drilling Trinidad Offshore Limited
CIDC Cactus International Drilling Company
COL Canam Offshore Limited
CQL Cam-Quip Limited
CWS Coastal Wireline Services
CWSL Caribbean Well Services Limited
DEB De Boehmler
DODI Diamond Offshore Drilling Inc.
DOS Dowell Schlumberger
DOSL Delta Oilwell Services Limited
E111L Explorer 111 Limited
ECI Ensco Caribbean Inc
FIV Fields Viking
FSDC Frank's Skinner Drilling Contractors
GBSL G.B. Services Limited
GMDC Global Marine Drilling Company
GMSA_LLC Global Marine South America LLC
GSF Global Santa Fe
HAL/TPS Halliburton/TPS
HEP HELMERICH & PAYNE
HES Halliburton Energy Services
HPF H&P Finco
HPIDC Helmerich and Payne International Drilling Company
HTL Halliburton Trinidad Limited
HTL1 Hydrocarb Trinidad Limited
HWSL Hydraualic Workover Services Limited
ICCN ICCN
ICL IERE Contractors Limited
IESL Industrial Equipment Supplies Limited
ISSL Imperial Snubbing Services Limirted
JNHCL J.N. Harriman and Co. Limirted
KES Kenson Services
LEG Legacy
LOL Lease Operators Limited
LPSL Lennox Production Services Limited
LTL Large Trinidad Limited
LWEL L & W Eng. Ltd
MAERSK Maersk
MAL Maxco Limited
MORAVEN Mora Oil Ventures Ltd
MPSL Murphy Petroleum Services Limited
NAI Nabors International
NAT Nathan
NHETTL New Horizon Exploration Trinidad and Tobago Ltd
NHETTU New Horizon Exploration T&T Unlimited
NHSL National Helicoptor Services Limited
NMESL Neal and Massy Energy Services Limited
NOA Not Applicable
NOC Nabors Offshore Corporation
NPSL Nathan Petroleum Services Limited
22
NWDL Neal Well Drilling Limited
OCL Oilwell Contractors Limited
PCL Process Components Limited
PED Petrolite Division
PETROTRIN_CON Petroleum Company of Trinidad and Tobago
PIC Petroquip Industrial Company
PIL Petrogen Industries Ltd
PKSL/ARL Petrokool/Antilles Resources Limited
PML Process Management Limited
POMSL Primera Oilfield Management Services Limited
POSL Petroleum Offshore Services Ltd
PPS Paria Petroleum Services
PSIL Pipe Services International Limited
PSL Petrokool Services Ltd.
PSSL Pool Santana Services Limited
PTSL Petroleum Tubulars Services Limited
RBC Reading & Bates Corporation
RBC/TRI Reading & Bates/Trinidrill
RECL Robust Equiptment Company Limited
ROC Rowan Contractors
ROESL Rooks Oilfield and Engineering Supplies Limited
ROL Republic Oillwell Limited
RRDSL Range Resources Drilling Services Limited
RTSL Rig Tech Services Limited
RYS RYCO Services
SCD Schlumberger Dowell
SDCL Skinner Drilling Contractors Limited
SDCL1 Southern Drilling Contractors Limited
SFDC Santa Fe Drilling Company
SJL Seadrill Jaya Limited
SKD SAPURA KENCANA DRILLING
SMOL Skinner Marine Operations Limited
SPSCL Sadhna Petroleum Services Company Limited
SPSL Southern Petroleum Services Limited
SSATL Saipem S.A Trinidad Limited
SSL Southern Supplies Limited
SSL1 Santana Services Limited
STI Schlumberger Trinidad Inc.
STI1 Sundowner Trinidad Inc.
TDS Tucker Drilling Services
TED Trinidad Exploration and Development Ltd
TEM Terra Mar
TES Tucker Energy Services
TESBP Tucker Energy Services/Baker Petrolite
TESHS Tucker Energy Services/Halliburton/Schlumberger
TESS Tucker Energy Services/Schlumberger
TGDL Trinidad Gulf Drilling Limited
TKDS Triple K. Drilling Services
TLS Trinity LiftBoat Services
TMDCL Taylor and Marine Drilling Contractors Limited
TMDCL1 Taylor and Milne Drilling Contractors Limited
TNAL Trinmar Northern Areas Limited
TNEL Ten Degrees North Energy Limited
TOCL T.O.C. Limited
TOCS_LLC TransOcean Offshore Caribbean Sea LLC
TOPS Trinidad Oilfield Petroleum Services
TOS Trinidad OilWell Services
TPS/TOS Trinidad Petroleum Services/TOS
TRI TransOcean Inc.
TRI1 Trindrill
TRINTOC_CON TRINTOC
TSF Transocean Sedco Forex
TSL Territorial Services Limited
TSL1 Trinipet Services Limited
23
TSL2 Trident Services Limited
TTL Todco Trinidad Limited
TTL1 Tuscany (Trinidad) Ltd
TTOC Trindad and Tobago Oil Company Ltd.
TVFCL Trinidad Valve and Fitting Company Limited
TWCL Trinidad Well Control Limited
TWS Tucker Wireline Services
TWS/TPS/HYD TWS/TPS/HYDROTEC
TWSL Trinity Well Services Limited
UCCL Ulrick's Contracting Co. Ltd.
VII Venwell International Inc.
WEI Weatherford International
WEL WELEX
WIDJV West Indies Drilling Joint Venture
WOSCL Water and Oil well Service Company Limited
WSL Well Services Limited
WSPCL Well Services Petroleum Company Limited
2.10 DATA TYPE

This refers to the various types of forms used by EDH. Refer to the table below to view the list of possible values:
DATA TYPE ID DATA TYPE NAME

Accident Reports Accident Reports
BHP Test Reports BHP Test Reports
Casing & Cementation Details Casing & Cementation Details
Certificate of Environmental Clearance Certificate of Environmental Clearance
Code Update Form Code Update Form
Core Sample Reports Core Sample Reports
Daily Drilling Reports Daily Drilling Reports
Daily Production Reports Daily Production Reports
Daily Workover Reports Daily Workover Reports
Directional Data Directional Data
Drill Time Curve Drill Time Curve
Drilling and Sampling Programme Drilling and Sampling Programme
Economic Evaluation Reports Economic Evaluation Reports
Geological Notes Geological Notes
Geological Survey Reports Geological Survey Reports
Letters Letters
Liquified Natural Gas Liquified Natural Gas
Magnetic and Gravity Survey Reports Magnetic and Gravity Survey Reports
Memos Memos
Montage Montage
Monthly Rig Reports Monthly Rig Reports
Mud Programme Mud Programme
PetroChemicals PetroChemicals
Pore Pressure Plot Pore Pressure Plot
Production Analyses Reports Production Analyses Reports
Production Test Reports Production Test Reports
Progress Reports Progress Reports
Refinery Refinery
Reports on Investigations Reports on Investigations
Safety Program Reports Safety Program Reports
Schematics Schematics
Seismic Data Reports Seismic Data Reports
Special Remarks on Drilling & Completion Special Remarks on Drilling & Completion
Stimulation Reports Stimulation Reports
Structural Contour Maps Structural Contour Maps
Surrounding Well Data Surrounding Well Data
Well Completion Reports Well Completion Reports
Well Log Files Well Log Files
2.11 DRILLING PROGRAM NUMBER

This is a number that identifies a specific drilling operation. The nomenclature is generated using the following rule:
24
Operator Code Field Code Sequential Submission Year
Number
A R C O A R I 1 1 1 2 0 0 4
For information about Operator Code, please refer to item 2.18. If the Operator Code has more than 8 characters, the code will be truncated to 8 characters.
For information about the Field Code, please refer to item 2.11.
The sequential number is assigned to each individual company for programs from 1st January to 31st December of each year.
2.12 DRILLING STATUS

This shows the current status of a drilling operation. Use in DRL4 and DRL5. Refer to the table below to view the list of possible values:
DRILLING STATUS CODE DRILLING STATUS DESCRIPTION

1 Status While Drilling: Rigging Up
10 Status While Drilling: Making Hole
11 Status While Drilling: Logging
12 Status While Drilling: Coring
13 Status While Drilling: Running Casing
14 Status While Drilling: Cementing
15 Status While Drilling: Waiting on cement
16 Status While Drilling: Other Time
19 Status While Drilling: Drilling Terminated
20 Drilling Suspended for: Mechanical Reasons or Surface
21 Drilling Suspended for: Mechanical Reasons Downhole
22 Drilling Suspended for: Awaiting Equipment
23 Drilling Suspended for: Weather
24 Drilling Suspended for: Industrial Dispute
25 Drilling Suspended for: Official Action
26 Drilling Suspended for: Other reasons
30 Well Suspended for: Mechanical Reasons
31 Well Suspended for: Awaiting test
32 Well Suspended for: Awaiting completion
33 Well Suspended for: Awaiting surface equipment
34 Well Suspended for: Awaiting downhole equipment
35 Well Suspended for: Other reasons
40 Status While Completing: Perforating
41 Status While Completing: Treating and/or stimulating
42 Status While Completing: Testing
43 Status While Completing: Repairing
44 Status While Completing: Other reasons
50 Status at Completion: Producer - Black Oil
51 Status at Completion: Producer - Condensate
52 Status at Completion: Producer - Gas
53 Status at Completion: Abandoned (open hole) dry
54 Status at Completion: Abandoned for mechanical reasons
55 Status at Completion: Abandoned after testing
56 Status at Completion: Completed - water injector
57 Status at Completion: Completed - Steam injector
58 Status at Completion: Completed - gas injector
59 Status at Completion: Completed - other
59a Status at Completion: Abandoned - other
59z Legacy
2.13 ELEVATION REFERENCE

This shows the current status of a drilling operation. Use in DRL4 and DRL5. Refer to the table below to view the list of possible values:
ELEVATION REFERENCE CODE ELEVATION REFERENCE NAME

CF Casinghead Flange
DF Derrick Floor
ES Echo Sounder
GL Ground Level
KB Kelly Bushing
RT Rotary Table
SL Sea Level
UN Unknown
25
2.14 FIELD
A field is an area of proven hydrocarbons. It comprises a number of wells that share the same reservoir or mega-structure, beyond which there is a level of
uncertainty as to the continuity of hydrocarbons. Codes are generated using the following rules:
If Field Name has 1 word, then the code will be the first 3 letters of that word.
If Field Name has 2 words, then the code will be the first 2 letters of the first word + the first letter of the second word.
If Field Name has 3 or more words, then the code will be the first letter of the first three words.
If using these rules a Field Code is duplicated, a sequential number will be added at the end of the code.
Refer to the tablebelow to see the list of possible values:
FIELD CODE FIELD NAME

1ERI ERIN (EX TTPEC)-PETROTRIN
1PAS PALO SECO EX TTPEC- PETROTRIN
2075 2075-79
2ERI ERIN (EX TTPEC)-BLOCK SER-1
2PAS PALO SECO (EX TTPEC)-BLOCK PS-1
3ERI ERIN (EX TTPEC)-BLOCK SPS-1
4624 4624-73
4627 4627-73
4628 4628-73
4629 4629-73
4631 4631-73
4632 4632-73
4642 4642-73
4643 4643-73
4645 4645-73
4647 4647-73
4649 4649-73
4650 4650-73
4651 4651-73
4652 4652-73
4653 4653-73
4654 4654-73
4657 4657-73
4658 4658-73
4659 4659-73
4660 4660-73
4675 4675-73
4677 4677-73
4678 4678-73
4680 4680-73
4682 4682-73
4683 4683-73
4684 4684-73
4685 4685-73
4688 4688-73
4689 4689-73
4690 4690-73
4692 4692-73
4693 4693-73
4697 4697-73
4698 4698-73
4699 4699-73
4700 4700-73
504 10504-72
505 10505-72
506 10506-72
507 10507-72
508 10508-72
509 10509-72
510 10510-72
511 10511-72
512 10512-72
26
514 10514-72
515 10515-72
516 10516-72
517 10517-72
518 10518-72
519 10519-72
520 10520-72
521 10521-72
522 10522-72
523 10523-72
524 10524-72
525 10525-72
526 10526-72
527 10527-72
528 10528-72
529 10529-72
531 10531-72
532 10532-72
534 10534-72
535 10535-72
536 10536-72
537 10537-72
538 10538-72
539 10539-72
540 10540-72
542 10542-72
543 10543-72
544 10544-72
545 10545-72
546 10546-72
547 10547-72
549 10549-72
550 10550-72
551 10551-72
5767 5767-75
5PAS PALO SECO (EX TTPEC)-BLOCK WD-1
9366 9366-71
9367 9367-71
9368 9368-71
9369 9369-71
9370 9370-71
9371 9371-71
9372 9372-71
9373 9373-71
9376 9376-71
ABL ANTILLES BRIGTHON LAND
ABM ANTILLES BRIGHTON MARINE
ABS ANTILLES BRIGHTON SUBMARINE
AGO AGOSTINI
ALL ALLUM
ALM ANTILLES LIGOURE MARINE
AMC ANTILLES MERRIMAC
AMH AMHERSTIA
ANC ANTILLES CENTRAL
ANE ANTILLES ERIN
ANG ANGOSTURA
ANG1 ANGELIN
ANT ANTILLES TRINITY
ANT1 ANTILLES TABAQUITE
ANV ANTILLES VESSIGNY
APC APEX CEDROS
AQN APEX QUARRY NORTH
27
AQS APEX QUARRY SOUTH
AQS1 APEX QUARRY SOUTH-BLOCK CO-1
ARI ARIPERO
ARI1 ARIPO
ATIN PETIPSC BLOCK ATIN
B1A BLOCK 1(a)
B1B BLOCK 1(b)
B22 BLOCK 22
B23A BLOCK 23(a)
B23B BLOCK 23(b)
B24 BLOCK 24
B25A BLOCK 25(a)
B25B BLOCK 25(b)
B26 BLOCK 26
B27 BLOCK 27
B2AB BLOCK 2(ab)
B2C BLOCK 2(c)
B3A BLOCK 3(a)
B3B BLOCK 3(b)
B4A BLOCK 4(a)
B4B BLOCK 4(b)
B5A BLOCK 5(a)
B5B BLOCK 5(b)
B5C BLOCK 5(c)
B5D BLOCK 5 (d)
B6B BLOCK 6(b)
B6D BLOCK 6(d)
B893 BLOCK 89-3
BAC BALATA CENTRAL
BAE BALATA EAST ( IPSC BLOCK BE-1)
BAN BANYAN
BAN BANYAN
BAR BARRACKPORE (PETROTRIN)
BAR1 BARRACKPORE-BLOCK KPA
BAR2 BARRACKPORE (PRIMERA)
BAW BALATA WEST
BCHMV PETIPSC BLOCK BCHMV
BCO BCO
BE-1 PETIPSC BLOCK BE-1
BEA BEACH (PETROTRIN)
BIC BICHE
BL9 BLOCK 9
BLE BLOCK E
BOB BOOS BLOCK
BON BONASSE
BOO BOODOOSINGH-BLOCK BOOD
BOOD PETFO BLOCK BOOD
BOU BOUSSIGNAC
BOU1 BOUGAINVILLEA
BOU2 BOUNTY
BOV BOVALLIUS
BPG BRITISH PETROLEUM GORDON
BRI BRICKFIELD
BRO BRIGTHON OFFSHORE
BRO1 BROOMAGE
BTD1 BLOCK TTDAA1
BTD14 BLOCK TTDAA14
BTD15 Block TTDAA15
BTD2 BLOCK TTDAA2
BTD28 BLOCK TTDAA28
BTD29 BLOCK TTDAA29
BTD3 BLOCK TTDAA3
BTD32 Block TTDAA32
BTD4 BLOCK TTDAA4
28
BTD5 BLOCK TTDAA5
BTD6 BLOCK TTDAA6
BTD7 BLOCK TTDAA7
BTD8 BLOCK TTDAA8
BUA BLOCK U(a)
BUO BRITISH UNION OIL CO.
CAL CALYX
CAN CANTEEN
CAN1 CANNONBALL
CAP CAPARO
CAR CARAPAL RIDGE
CAS CASSIA
CAS1 CASCADOUX
CAS2 CASHIMA
CAT CATSHILL (PETROTRIN IPSC)
CAT-1 PETIPSC BLOCK CAT
CEB CENTRAL BLOCK
CED CEDROS
CEH CEDAR HILL
CER CENTRAL RANGE
CHA CHACONIA
CHA1 CHARUMA
CHI CHICKLAND
CLB CENTRAL LOS BAJOS
CMB CORY MORUGA BLOCK
CO-1 PETLO BLOCK CO-1
CO-2 PETLO BLOCK CO-2
COB CORY BROS
COD COLENSO (DOL)
COL COLENSO
COL1 COLDON
COO COORA (PETROTRIN)
COO1 COORA-BLOCK CO-1
COO2 COORA-BLOCK CO-2
COR COROSAN
COT CORE TEST
CRA CRAELIUS
CRB CENTRAL RANGE BLOCK
CRG CRUSE GENERAL
CRR CENTRAL RANGE RESERVE
CRU CRUSE
CUC CUNINGHAM CRAIG
DEB DEBE
DOD DOLPHIN DEEP
DOF DOMOIL FREEPORT
DOL DOLPHIN
EAB EAST BRIGHTON
EAB1 EASTERN BLOCK
EAM EAST MANZANILLA
EAM1 EAST MAYARO
ERI ERIN (EX TTOC)-PETROTRIN
ERI1 ERIN (EX TTOC)-BLOCK WD-2
ERI2 ERIN (EX TTOC)-BLOCK WD-5/6
ERS ERIN SOUTH
ESM ESMERALDA
ESP ESPERANCE
FCG FORTIN CENTRAL GUAPO
FLA FLAMBOUYANT
FLA1 FLANAGIN
FOR FOREST RESERVE-PETROTRIN
FOR1 FOREST RESERVE-BLOCK WD-7M
FOR2 FOREST RESERVE-BLOCK WD-8
29
FRB FOREST RESERVE BERNSTEIN
FRM FOREST RESERVE MIDDLE FIELD
FRS FOREST RESERVE SYNCLINE
FYO FREDA
FYZ FYZABAD-PETROTRIN
FYZ1 FYZABAD-BLOCK FZ-1
FYZ2 FYZABAD-BLOCK FZ-2
FYZ3 FYZABAD-BLOCK WD-11
FYZ4 FYZABAD (PRIMERA)
FZ-1 PETLO BLOCK FZ-1
FZ-2 PETLO BLOCK FZ-2
GAL GALEOTA
GAL1 GALERA
GAO GALEOTA OFFSHORE
GMV GUAYAGUAYARE MARCELLE VALLEY
GOU GOUDRON (BLOCK GOU)
GOU-1 PETIPSC BLOCK GOU
GRA GRANSAULL
GRB GRAHAM BLOCK
GU-1 PETLO BLOCK GU-1
GUA GUAYAGUAYARE
GUA1 GUAPO (PETROTRIN)
GUA2 GUAPO-BLOCK WD-3
GUA3 GUAPO-BLOCK GU-1
GUB GUAYAGUAYARE BEACH-BLOCK BCHMV
GUM GUAPO MARINE
GUW GUAYAGUAYARE WEST
GUY GUAYAGUAYARE
HAH HARMONY HALL
HEL HELICONIA
HER HERRERA
HIB HIBISCUS
IBI IBIS
ICA ICACOS
IGR IGUANA RIVER
IGU IGUANA
IMM IMMORTELLE
INN INNISS (BLOCK ATIN)
IOC IERE OIL COMPANY
IXO IXORA
JAN JANKEE
JAT JAIRAM TRACE
JOR JOHNSON ROAD
JUN JUNIPER
KAI KAIRI
KAP KAPOK
KIN KINGFISHER
KIS KISKADEE
KPA PETFO BLOCK KPA
LAF LA FORTITUDE
LEL LEE LUM
LIT LIZARD (TLL)
LIT1 LIZARD (TPD)
LOB LOS BAJOS-PETROTRIN
LOB1 LOS BAJOS-BLOCK PS-1
LOB2 LOS BAJOS-BLOCK WD-16
LOR LORAN
LOT LOTHIANS
LRL LOWER REVERSE L
MAH MAHOGANY
MAH1 MAHAICA
MAL MALONY
30
MAN MANICOU
MAN1 MANGO
MAR MARAC
MAR1 MARABELLA
MAT MAYARO (TCO)
MAY MAYARO
MAY1 MAYO
MCK McKENZIE (PETROTRIN)
MCK1 McKENZIE (BLOCK WD-3)
MDB PETFO BLOCK MDB
ME -1 PETIPSC BLOCK ME
MGB MORUGA/GUAYAGUAYARE BAY BLOCK
MGB1 MAYARO-GUAYAGUAYARE-BLOCK
MOD MORNE DIABLO (BLOCK MDB)
MOE MORUGA EAST (BLOCK ME-1)
MOH MOUNT HARRIS
MON MORUGA NORTH (ADVANCE OIL)
MON1 MONTSERRAT
MOR MORA
MOR1 MON REPOS
MOS MORUGA SOUTH
MOT MOOSERUP TRACE
MOW MORUGA WEST
MUA MODIFIED U(a)
MUB MODIFIED U(b)
NAC NARIVA COCAL
NAO NAPARIMA OILFIELDS OF TRINIDAD
NAV NAVETTE (PETROTRIN)
NAV-1 PETIPSC BLOCK NAV-1
NAV1 NAVETTE (BLOCK NAV-1)
NCM1 BLOCK NCMA1
NCM2 BLOCK NCMA2
NCM3 BLOCK NCMA3
NCM4 BLOCK NCMA 4
ND-1 PETFO BLOCK ND-1
NED NEW DOME-BLOCK ND-1
NEG NEW GRANT
NEW NEWBOLD
NMB NORTH MARINE BLOCK
NMC NATIONAL MINING CORPORATION
NNO NEW NAPARIMA OILFILEDS
NWS NORTH WEST SOLDADO
OCC OCM COCAL
OIL OILBIRD
ONY ONYX
ORC ORCHID
ORO OROPOUCH (BLOCK ORP-1)
ORP-1 PETFO BLOCK ORP-1
ORT ORTOIRE
OSP OSPREY
OTO OROPOUCHE TRINIDAD OILFIELDS
PAD PARRYLANDS D
PAE PARRYLANDS E- PETROTRIN
PAE1 PARRYLANDS E- NEW HORIZON
PAP POINT-A-PIERRE
PAR PARANG
PAR1 PARRYLANDS (PETROTRIN)
PAR2 PARULA
PAR3 PARRYLANDS (BLOCK GU-1)
PAR4 PARRYLANDS (BLOCK WD-10)
PAS PALO SECO (EX TTOC)-PETROTRIN
PAS1 PALO SECO (EX TTOC)-BLOCK WD-1
31
PAS5 PALO SECO (EX TTOC)-BLOCK WD 5/6
PAS6 PALO SECO (PRIMERA)
PBM PRIMERA BRIGTHON MARINE
PCB PCO BP WILDCAT WELLS
PCO P.C.O.L
PEL PELICAN
PEM PETIT MORNE
PEN PENAL
PFC POINT FORTIN CENTRAL-PETROTRIN
PFC1 POINT FORTIN CENTRAL (BLOCK WD-3)
PFC2 POINT FORTIN CENTRAL (BLOCK WD-12)
PFE POINT FORTIN EAST-PETROTRIN
PFE1 POINT FORTIN EAST (BLOCK WD-3)
PFE2 POINT FORTIN EAST BLOCK (WD-7M)
PFE3 POINT FORTIN EAST (BLOCK WD-8)
PFO POINT FORTIN OFFSHORE
PFT POINT FORTIN TERRITORIAL
PFW POINT FORTIN WEST
PFW1 POINT FORTIN WEST (BLOCK WD-12)
PIP PIPARO
PLL POINT LIGOURE LAND
PLM POINT LIGOURE MARINE
PLO POINT LIGOURE OFFSHORE
PLS POINT LIGOURE SUBMARINE
POI POINSETTIA
POL POINT LIGOURE
POO POONAH
POS POOLE SYNDICATE
POU POUI
PPA PARRYLANDS PROTECTED AREA
PS-1 PETLO BLOCK PS-1
PUI PUZZLE ISLAND
QUA QUARRY-PETROTRIN
QUA1 QUARRY-BLOCK CO-1
QUA2 QUARRY-BLOCK QUS
QUA3 QUARRY-BLOCK WD-16
QUI QUINAM-PETROTRIN
QUI1 QUINAM-BLOCK CO-1
QUI2 QUINAM-BLOCK MDB
QUS PETFO BLOCK QUS
RAD RADIX
REF REFORM
REL REVERSE L
REM RED MANGO
REN RENEGADE
RIC RIO CLARO
ROB ROJAS BLOCK
ROC ROCHARD
ROD ROCK DOME
ROO ROODAL
ROP ROCKY PALACE
ROS ROSEAU
ROU ROUSILAC
S11B BLOCK S11(b)
SAF SAN FRANCIQUE
SAG SAVANA GRANDE
SAM SAMAAN
SAV SAVONETTE
SECC SOUTH EAST COAST CONSORTIUM
SEG SOUTH EAST GALEOTA
SEL SELLIER
32
SER SERRETTE
SER-1 PETFO BLOCK SER-1
SER1 SERCAN FIELD
SFE SAN FRANCIQUE EAST
SFO SOLDADO FORTIN OFFSHORE
SFT SOLDADO FORTIN TERRITORIAL
SFW SAN FRANCIQUE WEST
SGB SOUTH GALEOTA BLOCK
SIN SINGUINEAU
SIP SIPARIA
SMB SOUTH MARINE BLOCK
SNB S.N.T.O BP WILDCAT WELLS
SNM SOLDADO NORTH MARINE
SNW SOLDADO NORTH WEST
SOE SOLDADO EAST
SOM SOLDADO MAIN
SON SOLDADO NORTH
SOQ SOUTH QUARRY
SOS SOUTH SAZA
SOW SOLDADO WEST
SPA SPARROW
SPR SPRINGVALE
SPS-1 PETFO BLOCK SPS-1
SSM SOLDADO SOUTH MARINE
SSW SOLDADO SOUTH WEST
STA STARFISH
STC ST CROIX
STO SCOTTISH TRINIDAD OILFIELDS
STT STONE TRACE
SUN SUNTY PCOL
SWP SOUTH WEST PENNISULA
TAB TABAQUITE-BLOCK TABN-1
TAB1 TABLELAND
TABN-1 PETFO BLOCK TABN-1
TAC T.C.O ACHAN CROWN BLOCK
TAL TALPARO
TAM TAMBA
TAP TABLELAND (PCOL)
TAU TABLELAND (UBOT)
TCC TCO CARDIFF
TEA TEAK
TEC TEXACO CARDIFF
TEE TRINIDAD ESMERALDA ESTATES
TLP TRINIDAD LAKE PETROLEUM
TNAB Trinidad Northern Areas (TNA) Block
TNP TRINIDAD NATIONAL PETROLEUM
TOC TRINIDAD OILFIELD CO
TOU TOUCAN
TPM TPD MANDINGO
TRO TRINTOPEC OROPOUCHE (ST CATHERINES)
TRO1 TRINTOPEC OROPOUCHE (ST JOHNS ESTATE)
TTL TTI LIZARD SPRING
UBW UNITED BRITISH WEST INDIES PETROLEUM SYNDICATE
URO UROZ OILFIELDS
VES VESSIGNY
VIS VISTABELLA
WD-1 PETLO BLOCK WD-1
33
WD-5/6 PETLO BLOCK WD-5/6
WD-7M PETLO BLOCK WD-7M
WIL WILSON
WIL1 WILDCAT
WIL2 WILLIAMSVILLE
2.15 FLUID TYPE

This is a reference value describing the type of material produced or injected. Refer to the table below to view the list of possible values:
FLUID TYPE CODE FLUID TYPE NAME

10 BLACK OIL
11 BLACK OIL (HEAVY)
12 BLACK OIL (LIGHT)
20 CONDENSATE
30 GAS
40 WATER
2.16 GATHERING STATION

A gathering station is a facility to temporally store well fluids gathered from several wells around it. Refer to the table below to view the list of possible values:
GATHERING STATION CODE GATHERING STATION REFERENCE NAME

ABM 1 Brighton 1
ABM 11 Brighton 11
ABM 13 Brighton 13
ABM 2 Brighton 2
ANT 15 Trinity Antilles 15
ANT MS Trinity Antilles main storage
ANV 14 Vessigny 14
ANV 3 Vessigny 3
ANV MS Vessigny Main Storage
BAE 1 Balata East 1
BAR 1 Barrackpore 1
BAR 11 Barrackpore 11
BAR 4 Barrackpore 4
BAR 6 Barrackpore 6
BAR MS Barrackpore main storage
BEA 123 Beachfield 123
BEA MS Beachfield main storage
CAT 1 Catshill 1
CAT 2 Catshill 2
CAT 3 Catshill 3
CAT MS Catshill main storage
CLB 1 Central Los Bajos 1
CLB MS Central Los Bajos main storage
COO 11 Coora 11
COO 14 Coora 14
CRU 40 Cruse 40
CRU 9 Cruse 9
ERI 7 Erin 7
ERS 6 Erin South 6
34
FR 1361 FR 1361
FR 1621 Forest Reserve 1621
FR 777 Forest Reserve - Middle Field 77
FRB 274 Forest Reserve - Bernstein 274
FRB MS Forest Reserve - Bernstein main storage
FRM 402 Forest Reserve - Middle Field 402
FRS 1 Forest Reserve - Syncline 1
FYZ 1 Fizabad 1
FYZ 10 Fyzabad 10
FYZ 13 Fyzabad 13
FYZ 16 Fyzabad 16
FYZ 18 Fyzabad 18
FYZ 19 Fyzabad 19
FYZ 20 Fyzabad 20
FYZ 21 Fyzabad 21
FYZ 22 Fyzabad 22
FYZ 3 Fizabad 3
FYZ 4 Fizabad 4
FYZ 5 Fizabad 5
FYZ MS Fyzabad main storage
GAL MS Galeota main storage
GOU 134 Goudron 134
GOU 207 Goudron 207
GRR 10 Grande Ravine 10
GRR MS Grande Ravine main storage
GUA1 10 Guapo 10
GUA1 11 Guapo 11
GUA1 12A Guapo 12A
GUA1 12B Guapo 12B
GUA1 2 Guapo 2
GUA1 3 Guapo 3
GUA1 5 Guapo 5
GUA1 6 Guapo 6
GUA1 9A Guapo 9A
GUA1 MS Guapo main storage
ICA 1 Icacos 1
ILE IA Internal Lease IA
ILE MS Internal Lease main storage
INN 1 Inniss 1
LEG Legacy
MAD 372 Madingo 372
MCK 6 Mc Kenzie 6
MOD 47 Morne Diablo 47
MOE 4 Moruga East 4
MOW 7 Moruga West 7
35
MOW MS Moruga West main storage
NAV 307 Navette 307
NAV 410 Navette 410
NAV 528 Navette 528
NHETTU FS 1 NHETTU PAE Fiscalization Site 1
NOA Not Applicable
ORO 1 Oropouche 1
ORO 39 Oropouche 39
ORO 8 Oropouche 8
PAR1 17 Parrylands 17
PEN 10 Penal 10
PEN 13 Penal 13
PEN 14 Penal 14
PEN 15 Penal 15
PEN 4 Penal 4
PEN 6 Penal 6
PEN 9 Penal 9
PEN MS Penal main storage
PFC 1 Pt. Fortin Central 1
PFC MS Pt. Fortin Central main storage
PFE 26 Pt. Fortin East 26
PFW 1 Pt. Fortin West 1
POF 1 Point Fortin FOS 1
POF HN Point Fortin HN 1
POL MS Pt. Ligoure ALS main storage
PSE 1 Palo Seco 1
PSE 10A Palo Seco 10A
PSE 13 Palo Seco 13
PSE 19 Palo Seco 19
PSE 2 Palo Seco 2
PSE 24 Palo Seco 24
PSE 28 Palo Seco 28
PSE 29 Palo Seco 29
PSE 30 Palo Seco 30
PSE 4 Palo Seco 4
PSE 41 Palo Seco 41
PSE 42 Palo Seco 42
PSE 43 Palo Seco 43
PSE 44 Palo Seco 44
PSE 45 Palo Seco 45
PSE 5 Palo Seco 5
PSE 8 Palo Seco 8
QUA 10 Quarry 10
QUA 19 Quarry 19
36
QUA 3 Quarry 3
QUA 4 Quarry 4
QUA 5 Quarry 5
ROO 1 Roodal 1
SFE 1 San Francique East 1
SFE 2 San Francique East 2
SFW 1 San Francique West 1
SFW 2 San Francique West 2
SFW MS San Francique West main storage
SIP 4 Siparia 4
WIL 2 Wilson 2
WIL 3 Wilson 3
2.17 GUN TYPE

This refers to the type of guns used in the well completion process. Refer to the table below to view the list of possible values:
GUN TYPE CODE GUN TYPE NAME

3 1/2 Slick 3 1/2 Slick
ETT Expandable - Through Tubing
EXG Expendable guns
HSC Hollow steel carriers
N/A N/A
NA None perforating gun used in Open Hole
TCP Tubing conveyed perforation
2.18 HEIGHT DETERMINATION METHOD

This refers to the method used in calculating the height of cement at the cementing stage. Refer to the table below to view the list of possible values:
HEIGHT DETERMINATION METHOD CODE HEIGHT DETERMINATION METHOD NAME

A ACTUAL
CBL CEMENT BOND LOG
LEG LEGACY
THC THEORETICAL HEIGHT OF CEMENT
TS TEMPORARY SURVEY
2.19 INJECTION PROJECT

This refers to injection project types. Refer to the table below to view the list of possible values.
INJECTION PROJECT TYPE INJECTION PROJECT NAME

APQU APEX QUARRY ( WASP )
BEVI BENNETT VILLAGE ( WASP )
BLOA BLOCK "A" ( WATER )
BLOB BLOCK "B" ( WATER )
CAC30B24 CATSHILL :CO-30.BLK.24 ( WATER )
CANS CATSHILL : "N" SAND ( WATER )
CELB CENTRAL LOS BAJOS ( WASP )
CO2 INJECTION CO2 Injection Project
FORC FOREST RESERVE CYCLIC ( CO2 )
FRFS FOREST RESERVE FOREST SANDS ( CO2 )
FRP1EAST FOREST RESERVE PHASE 1 EAST ( CO2 )
FRP1EXT FOREST RESERVE PHASE 1 EXTENSION ( STEAM )
FRP1WEST FOREST RESERVE PHASE 1 WEST EXTENSION ( STEAM )
FRPIII FOREST RESERVE PROJECT III ( WASP )
FRUCWE FOREST RESERVE UCWE ( CO2)
FRZ5S FOREST RESERVE ZONE 5 SAND ( CO2 )
FYCS FYZABAD CRUSE SAND ( WATER )
FYFS FYZABAD FOREST SAND ( WATER )
GAPB GALEOTA PLATFORM "B" ( WATER )
GAPC GALEOTA PLATFORM "C" ( WATER )
GAS INJECTION Gas Injection Project
GUAP GUAPO (STEAM )
IP-1 Water Injection Project 1
Jan-1977 WATERFLOOD
37
INJECTION PROJECT TYPE INJECTION PROJECT NAME
OROP OROPOUCHE ( CO2 )
PARE PARRYLANDS "E" ( STEAM )
PASE PALO SECO ( WASP )
PFCCE PT. FORTIN CENTRAL CRUSE "E" ( STEAM )
PFCCEAIV PT. FORTIN CENTRAL CRUSE "E" AREA IV ( STEAM )
PFCE PT. FORTIN CRUSE "E" ( STEAM )
PFCG PT. FORTIN CRUSE "G" ( WATER )
PP1AE PARRYLANDS PHASE 1A EXPANSION ( STEAM )
STEAM INJECTION Steam Injection Project
T01UMLS TEAK 0/1(UML) SAND ( WATER )
T01UMS TEAK 0/1UM SAND ( WATER )
T02S TEAK 0/2 SAND ( WATER )
TEUS TEAK U SAND ( WATER )
TMM01LS TEAK MM 01/L SAND ( WATER )
TRSH TRINITY SHALLOW HERRERA ( WATER )
WASP INJECTION WASP Injection Project
WATER INJECTION Water Injection Project
WF - 1 WATERFLOOD (PRODUCERS - BLOCK A)
2.20 LEASE NUMBER

This is the list of Lease Numbers. Refer to the table below to view the list of possible values.
LEASE_NAME LEASE_CODE
1/1 1/1
1/14(1) 1/14(1)
1/48(15) 1/48(15)
10241/1956 10241/1956
10283/1956 10283/1956
10284/1956 10284/1956
10285/1956 10285/1956
1038/53 1038/53
10504-72 10504-72
10505-72 10505-72
10506-72 10506-72
10507-72 10507-72
10508-72 10508-72
10509-72 10509-72
10510-72 10510-72
10511-72 10511-72
10512-72 10512-72
10513-72 10513-72
10514-72 10514-72
10515-72 10515-72
10516-72 10516-72
10517-72 10517-72
10518-72 10518-72
10519-72 10519-72
10520-72 10520-72
10521-72 10521-72
10522-72 10522-72
10523-72 10523-72
10524-72 10524-72
10525-72 10525-72
10526-72 10526-72
10527-72 10527-72
10528-72 10528-72
10529-72 10529-72
10531-72 10531-72
10532-72 10532-72
10534-72 10534-72
10535-72 10535-72
10536-72 10536-72
10537-72 10537-72
10538-72 10538-72
38
10539-72 10539-72
10540-72 10540-72
10541-72 10541-72
10542-72 10542-72
10543-72 10543-72
10544-72 10544-72
10545-72 10545-72
10546-72 10546-72
10547-72 10547-72
10548-72 10548-72
10549-72 10549-72
10550-72 10550-72
10551-72 10551-72
106-44/57 106-44/57
1077-37 1077-37
10980/1967 10980/1967
11569 11569
11662/1954 11662/1954
12855/74 12855/74
13160 13160
13160/58 13160/58
1403/1953 1403/1953
15022/1958 15022/1958
167/1914 167/1914
16819/1993 16819/1993
19051/92 19051/92
2/14(2) 2/14(2)
2/48(16) 2/48(16)
2049/1929 2049/1929
2075-79 2075-79
2127/16 2127/16
2414/37 2414/37
2453/1935 2453/1935
25951/1999 25951/1999
25952/1999 25952/1999
26/1954 26/1954
2660/1958 2660/1958
2671-1947 2671-1947
2725-1937 2725-1937
3090/1916 3090/1916
3168/36 3168/36
3367/1956 3367/1956
34/57 34/57
3439/35 3439/35
3441/1935 3441/1935
3444/35 3444/35
3447/1935 3447/1935
3449/1935 3449/1935
3450/1935 3450/1935
3451 3451
3451/1935 3451/1935
3472/1933 3472/1933
35/57 35/57
35/57(97) 35/57(97)
35/57(98) 35/57(98)
36/57 36/57
36/57(98) 36/57(98)
37/1936 37/1936
3942/1952 3942/1952
4/(48)14 4/(48)14
4141/51 4141/51
4141/57 4141/57
421/1930 421/1930
426/1937 426/1937
39
4340-47 4340-47
4340/37 4340/37
4375-89 4375-89
4432 4432
4499/1973 4499/1973
46/57 46/57
4624-73 4624-73
4625-73 4625-73
4627-73 4627-73
4628-73 4628-73
4629-73 4629-73
4630-73 4630-73
4631-73 4631-73
4632-73 4632-73
4633-73 4633-73
4642-73 4642-73
4643-73 4643-73
4644-73 4644-73
4645-73 4645-73
4646-73 4646-73
4647-73 4647-73
4648-73 4648-73
4649-73 4649-73
4650-73 4650-73
4651-73 4651-73
4652-73 4652-73
4653-73 4653-73
4654-73 4654-73
4655-73 4655-73
4656-73 4656-73
4657-73 4657-73
4658-73 4658-73
4659-73 4659-73
4660-73 4660-73
4675-73 4675-73
4677-73 4677-73
4678-73 4678-73
4680-73 4680-73
4681-73 4681-73
4682-73 4682-73
4683-73 4683-73
4684-73 4684-73
4685-73 4685-73
4688-73 4688-73
4689-73 4689-73
4690-73 4690-73
4691-73 4691-73
4692-73 4692-73
4693-73 4693-73
4696-73 4696-73
4697-73 4697-73
4698-73 4698-73
4699-73 4699-73
4700-73 4700-73
4794-40 4794-40
521/1934 521/1934
530/40 530/40
5767-75 5767-75
6353/53 6353/53
6353/63 6353/63
6363/44 6363/44
6831/57 6831/57
7723/1952 7723/1952
7723/52 7723/52
40
8202-72 8202-72
9366-71 9366-71
9367-71 9367-71
9368-71 9368-71
9369-71 9369-71
9370-71 9370-71
9371-71 9371-71
9372-71 9372-71
9373-71 9373-71
9374-71 9374-71
9375-71 9375-71
9376-71 9376-71
9377-71 9377-71
9378-71 9378-71
9379-71 9379-71
9381/1966 9381/1966
Beau Lieu Estate 1 Beau Lieu Estate 1
Block 1(a) Block 1(a)
Block 1(b) Block 1(b)
Block 2(ab) Block 2(ab)
Block 2(c) Block 2(c)
Block 22 Block 22
Block 24 Block 24
Block 26 Block 26
Block 27 Block 27
Block 5(c) Block 5(c)
Block 5(d) Block 5(d)
Block 6(d) Block 6(d)
Block 89-3 Block 89-3
Block 9 Block 9
Block E Block E
Block NCMA 1 Block NCMA 1
Block S11(b) Block S11(b)
Block TTDAA 1 Block TTDAA1
Block U(a) Block U(a)
Block U(b) Block U(b)
Central Block Central Block
Central Range Block Central Range Block
DE 201000790221 DE 201000790221
DE200101926314D001 DE200101926314D001
DE200101929963D001 DE200101929963D001
41
DE200101934797D001 DE200101934797D001
E+P120 E+P120
E+P121 E+P121
E+P2075 E+P2075
EBP EBP
L-0 L-0
L-1 L-1
L-10 L-10
L-11 L-11
L-12 L-12
L-13 L-13
L-14 L-14
L-15 L-15
L-17 L-17
L-18 L-18
L-19 L-19
L-2 L-2
L-20 L-20
L-21 L-21
L-22 L-22
L-23 L-23
L-24 L-24
L-26 L-26
L-27 L-27
L-28 L-28
L-29 L-29
L-30 L-30
L-31 L-31
L-32 L-32
L-33 L-33
L-34 L-34
L-35 L-35
L-36 L-36
L-37 L-37
L-38 L-38
L-39 L-39
L-4 L-4
L-40 L-40
L-41 L-41
L-42 L-42
L-43 L-43
L-44 L-44
L-45 L-45
L-46 L-46
L-47 L-47
L-48 L-48
L-49 L-49
L-5 L-5
L-50 L-50
L-52 L-52
L-53 L-53
L-55 L-55
L-57 L-57
L-6 L-6
L-7 L-7
L-8 L-8
L-9 L-9
Lower Reverse L Lower Reverse L
Modified U(a) Modified U(a)
Modified U(b) Modified U(b)
Pending Pending
Private Private
Reverse L Reverse L
SECC SECC
42
South East Galeota South East Galeota
South Galeota Block South Galeota Block
State State
Trinmar Block Trinmar Block
2.21 LESSEE / OWNER

The lessee or owner is normally associated to an operator company working within a geographical area, such as a field or a block. Refer to the table below to
view the list of possible values:
LESSEE/OWNER CODE LESSEE/OWNER NAME LESSEE/OWNER DESCRIPTION

AOL Advance Oil (Trinidad) Limited Advance Oil (Trinidad) Limited
ARCO Trinidad Explorationand Production
ARCO/PTL/UTTL ARCO/PTL/UTTL Company/Petrobras Trinidad Ltd/Union Texas Trin
Limited
Amoco Trinidad GAS BV and Repsol Exploration T
ATGBV/REPSOL ATGBV/REPSOL
S.A.
ATOC Amoco Trinidad Oil Company Amoco Trinidad Oil Company
BG Trinidad Central Block Limited/Petroleum Com
BGCB/PETROTRIN BGCB/PETROTRIN
of Trinidad and Tobago
BG Exploration and Production Limited/Texaco Tri
BGEPL/TTI BGEPL/TTI
Inc.
BGTT/AGIP/VEBA/PETROTRIN British Gas/AGIP/VEBA/Petrotrin British Gas/AGIP/VEBA/Petrotrin
BG Trinidad and Tobago, Petroleum Company Of
BGTT/ENI/PETRO-CANADA/PETROTRIN BGTT/ENI/Petro-Canada/Petrotrin Trinidad and Tobago, ENI Trinidad & Tobago Ltd a
Petro Canada Trinidad GmbH
BGTT/PETROTRIN BG Trinidad and Tobago and Petrotrin BG Trinidad and Tobago and Petrotrin
BGTTL British Gas Trinidad and Tobago Ltd British Gas Trinidad and Tobago Ltd
British Gas Trinidad Limited and Chevron Block 6b
BGTTL/CHEVRON BG Trinidad and Tobago Limited/Chevron
6d
British Gas Trinidad LTD and Deminex Trinidad
BGTTL/DEMINEX/AGIP BGTTL/DEMINEX/AGIP
Petroleum GMBH and Agip Trinidad and Tobago L
British Gas Exploration and Production LTD and Te
BGTTL/TEXACO BGTTL/TEXACO
Trinidad INC
BHP Petroleum (Trinidad) Inc./ELF Petroleum Trin
BHP/ELF BHP/ELF
B.V.
BHP Petroleum (Trinidad-2AB) INC and Talisman
BHP/TALISMAN BHP Petroleum (Trinidad-2AB) INC/Talisman
(Trinidad) Holdings LTD
BHP Petroleum Block 2C/Total/Talisman (Trinidad
BHP/TOTAL/TALISMAN BHP Petroleum Block 2C/Total/Talisman
Holdings Ltd
BHP Billiton Petroleum (Trinidad Block 23A) Limite
BHP23A/BPEOC BHP23A/BPEOC
Exploration Operating Company Limited
BHP Billiton Petroleum (Trinidad Block 23B Limite
BHP23B/REPAL BHP23B/REPAL
Repsol Angostura Limited
BHP2C/TOTAL/TALISMAN BHP 2C BHP2 C
BHP2CR/NGCBV/CHAOYANG BHP2CR/NGCBV/CHAOYANG BHP2CR/NGCBV/CHAOYANG
BHP3A/ANADARKO/CHAOYANG/PETROTRIN/NGCBV BHP3A/ANADARKO/CHAOYANG/PETROTRIN/NGCBV BHP3A/ANADARKO/CHAOYANG/PETROTRIN/N
BHP Billiton Trinidad-3(a) Ltd/BG Trinidad EC
BHP3A/BGTTL/TAL/ELF BHP3A/BGTTL/TALISMAN/ELF Limited/Talisman (Trinidad Block 3A) Ltd/ELF
Exploration Trinidad BV
BHP Billiton 3(a) Ltd/Kerr Mc Gee TT E&P
BHP3A/KMG/TOTAL/TAL/PET BHP3A/KMG/TOTAL/TAL/PET
Ltd/Total/Talisman (Trinidad) Holdings Ltd/Petrotrin
BHP3A/TAL/ANA/PET BHP Billiton Trinidad 3(a)Talisman/Anadarko/Petrotrin BHP Billiton Trinidad 3(a)Talisman/Anadarko/Petro
BHP Billiton Petroleum (Trinidad Block 14) Limited
BHPTTDAA14/BPEOC BHPTTDAA14/BPEOC
Exploration Operating Company Limited
BHPTTDAA28 BHPTTDAA28 BHP Billiton Petroleum (Trinidad Block 28) Limited
BHPTTDAA29 BHPTTDAA29 BHP Billiton Petroleum (Trinidad Block 29) Limited
BHP Billiton (Trinidad Block 3) Limited/BG International BHP Billiton Petroleum (Trinidad Block 3) Limited/B
BHPTTDAA3/BGI
Limited International Limited.
BHPTTDAA5/BGI
BHPTTDAA6/BGI
BHP Billiton Petroleum (Trinidad Block 7) Limited /
BHPTTDAA7/BGI BHPTTDAA7/BGI
International Limited
BOL Beach Oilfield Limited Beach Oilfield Limited
BPTT-LLC British Petroleum Trinidad and Tobago LLC bp Trinidad and Tobago LLC
43
British Petroleum Trinidad and Tobago Limited/Repsol British Petroleum Trinidad and Tobago Limited/Re
BPTT/REPTTL
Exploration Exploration
CENTRENE CENTRICA ENERGY CENTRICA ENERGY
CONOCO4A Conoco Trinidad 4(a) Conoco Trinidad 4(a)
CONOCO4B Conoco Trinidad (4b) B.V. Conoco Trinidad (4b) B.V.
CSEI Canadian Superior Energy Inc. Canadian Superior Energy Inc.
EEPT(DEEP WATER) Exxon Exploration and Prod. Trinidad (Deep Water) Exxon Exploration and Production Trinidad (Deep
EEPTL Exxon Exploration and Production Trinidad Limited Exxon Exploration and Production Trinidad Limited
EGOTL Enron Gas & Oil Trinidad Ltd Enron Gas & Oil Trinidad Ltd
ELF Exploration Trinidad B.V. and Amoco Trinidad
ELF/AMOCO/REPSOL ELF Exploration Trinidad BV/Amoco/Repsol
(S11B) B.V. and Repsol Exploration Trinidad S.A.
ELF Exploration Trinidad B.V. and Amoco Trinidad
ELF/REPSOL ELF Exploration Trinidad BV/Amoco/Repsol
(S11B) B.V. and Repsol Exploration Trinidad S.A.
ENRON ENRON Gas & Oil Trinidad-U(a) Block Limited ENRON Gas & Oil Trinidad-U(a) Block Limited
EOG Resources Trinidad LTD and Petroleum Com
EOG/PTT/NGC EOGRTL/Petrotrin/NGC of Trinidad and Tobago Limited and National Gas
Company of Trinidad and Tobago LTD
EOG4A EOG Resources Trinidad Block 4 (a) Unlimited EOG Resources Trinidad Block 4 (a) Unlimited
EOGLRL EOG Resources Trinidad-LRL Block Unlimited EOG Resources Trinidad-LRL Block Unlimited
EOGRTL EOG Resources Trinidad Limited EOG Resources Trinidad Limited
EOG Resources Trinidad U(B) Block Unlimited and
EOGRTL/PRIMERA EOGRTL/PRIMERA
Primera Oil and Gas Limited
EOGUA EOG Resources Trinidad Block U (a) Unlimited EOG Resources Trinidad Block U (a) Unlimited
EOGUB EOG Resources Trinidad Block U (b) Unlimited EOG Resources Trinidad Block U (b) Unlimited
HEE Herrera Estate Herrera Estate
Kerr McGee TT Offshore Petroleum Ltd/Primera Blo
KMG/PRIMERA KMG/PRIMERA
3(b) Limited
KMGTTOP Kerr McGee TT Offshore Petroleum Limited Kerr McGee TT Offshore Petroleum Limited
LEG Legacy Legacy
MORAVEN Mora Oil Ventures Ltd Mora Oil Ventures LTD
New Horizon Exploration Trinidad and Tobago
NHETTU/PETROTRIN NHETTU/PETROTRIN Unlimited/Petroleum Company of Trinidad and Tob
Limited
NIKO Resources Limited / Centrica Energy / Petrol
NRL/CENTRENE/PETROTRIN NRL/CENTRENE/PETROTRIN
Company of Trinidad and Tobago Limited
NIKO Resources Limited/Petroleum Company of Trinidad NIKO Resources Limited/Petroleum Company of T
NRL/PETROTRIN
and Tobago and Tobago
NRL4B Niko Resources Limited NIKO Resources Limited Block 4b
OSL Oilbelt Services Limited Oilbelt Services Limited
PAREX/VOYAGER/PETROTRIN PAREX/VOYAGER/PETROTRIN PAREX/VOYAGER/PETROTRIN
PCOL Premier Consolidated Oilfields Limited Premier Consolidated Oilfields Limited
Petro-Canada T&T Block 1(a)/Petroleum Company
PCTT1A/PETROTRIN PCTT1A/PETROTRIN
Trinidad and Tobago Limited
Petro-Canada T&T Block 1(b)/Petroleum Company
PCTT1B/PETROTRIN PCTT1B/PETROTRIN
Trinidad and Tobago Limited
PCTT22 Petro-Canada Trinidad and Tobago Block 22 Inc Petro-Canada Trinidad and Tobago Block 22 Inc
PETROTRIN_LIC Petroleum Company of Trinidad and Tobago Petroleum Company of Trinidad and Tobago
POGTL Primera Oil and Gas Trinidad Limited Primera Oil and Gas Trinidad Limited
Repsol Exploration and Production Trinidad and T
REPTTL Repsol Exploration and Production T&T Ltd
Limited
SOOGL/PRIMERA/PETROTRIN SOOGL/PRIMERA/PETROTRIN SOOGL/PRIMERA/PETROTRIN
STATE STATE State
STL Shell Trinidad Limited Shell Trinidad Limited
TALISMAN Talisman (Trinidad) Petroleum LTD Talisman (Trinidad) Petroleum LTD
Talisman Trinidad (Block 3A) LTD and ELF Explor
TALISMAN/ELF TALISMAN/ELF
Trinidad B.V.
TED/PETROTRIN Trinidad Exploration Development/Petrotrin Trinidad Exploration Development/Petrotrin
TERL Tracmac Energy Resources Ltd Tracmac Energy Resources Ltd
TNAL Trinmar Northern Areas Limited Trinmar Northern Areas Limited
TNEL Ten Degrees North Energy Limited Ten Degrees North Energy Limited
Trinidad Shell Exploration and Production B.V. and
TSEP/AGIP TSEPBV/AGIP
Trinidad and Tobago Exploration B.V.
TTI Texaco Trinidad Inc. Texaco Trinidad Inc.
TTMAR Trinidad and Tobago Marine Company Limited Trinidad and Tobago Marine Company Limited
TTOC Trindad and Tobago Oil Company Ltd. Trinidad and Tobago Oil Company Limited
TTPCL Trinidad Tesoro Pet. CO Ltd Trinidad Tesoro Pet. CO LTD
TTPCL1 Trinidad and Tobago Petroleum Company Trinidad and Tobago Petroleum Company
44
UTL Unocal Trinidad Limitted Unocal Trinidad Limited

VOGTL Vermilion Oil and Gas (Trinidad) Ltd Vermilion Oil and Gas (Trinidad) Ltd
VOGTL/PETROTRIN Vermilion Oil & Gas (Trinidad) Ltd/Petrotrin Vermilion Oil & Gas (Trinidad) Ltd/Petrotrin
2.22 MUD TYPE

This is the type of mud used during drilling and workover operations. Refer to the table below to view the list of possible values:
MUD TYPE CODE MUD TYPE NAME

BARADRIL-N BARADRIL-N based mud
BRINE Brine
CD LEASE CRUDE
DRILL-IN FLUID DRILL-IN FLUID
GEL GEL based mud
GEL + BARYTES Gel and Barytes
GEL + LIGNO AQUA GEL/LIGNITE
GEL + WATER Gel and Water based mud
GEM KCL/POLYMER GEM KCL/POLYMER based mud
LEG Legacy
LIGNITE/LIGNO LIGNITE/LIGNO based mud
LOW_PH_POLYMER Low PH Modified Polymer Water Based Mud
LSD Low Solids Dispersed
LSND Low Solids Non Dispersed
LTOBM Low Toxicity Oil Base Mud
LTSBM Low Toxicity Synthetic Base Mud
MIF Milling Fluid
OBM Oil Based Mud
PACKER_FLUID Packer Fluid
PED Perflow Dif
PHG/KCI/Polymer/Clay Seal PHG/KCI/Polymer/Clay Seal
POLYMER POLYMER
Polymer/CaCl Polymer / Calcium Carbonate
SEA WATER Sea Water
SEA WATER W/BENTONITE POLYMER Sea Water W/BENTONITE Polymer based mud
SEAWATER + GEL SWEEPS SeaWater and Gel Sweeps
SOLUKEEN SOLUKEEN (WATER_BASED_MUD)
SYNTHETIC_OIL_BASED_MUD Synthetic Oil based mud
SeaWater_PHG Sea Water / PHG
WATER_BASED_MUD Water based mud
XC_POLYMER XC-Polymer
2.23 OPERATOR
The operator is the oil & gas company operating in a field. Refer to the table below to view the list of possible values:
OPERATOR CODE OPERATOR NAME

AMHESS Amerada Hess
AOL PETFO - Advance Oil (Trinidad) Ltd
APCCL API Pipeline Construction Company Limited
APCL PETFO -API Petroleum Company Ltd.
APCL1 PETIPSC - API Petroleum Company Ltd.
ARCO Atlantic Richfield Company Trinidad LTD.
ARL Antilles Resources Limited
ATGBV Amoco Trinidad Gas b.v.
ATOC Amoco Trinidad Oil Company
AVOGL PETIPSC -A & V Oil and Gas Ltd.
BEGL Bayfield Energy Galeota Limited
BGCB BG Trinidad Central Block Limited
BGECMA British Gas East Coast Marine Area
BGNCMA British Gas North Coast Marine Area
BGTTL British Gas Trinidad and Tobago Ltd
BGTTL/PETROTRIN BG Trinidad and Tobago Limited and Petrotrin
BHP/TALISMAN BHP Petroleum (Trinidad-2AB) INC and Talisman
BHP23A BHP Billiton Petroleum (Trinidad Block 23A) Limited
45
BHP23B BHP Billiton Petroleum (Trinidad Block 23B) Limited
BHP2AB BHP Billiton (Trinidad-2AB) Ltd
BHP2C BHP Billiton ( Trinidad-2C) Ltd
BHP3A BHP Billiton (Trinidad-3A) Ltd
BHPTTDAA14 BHP Billiton Petroleum (Trinidad Block 14) Limited
BOL Beach Oilfield Limited
BPTT-LLC British Petroleum Trinidad and Tobago LLC
CARAM CarAm Energy
CEIL Conwest Exploration (International) Ltd.
CENTRENE Centrica Energy
CII PETFO-Coastline International Inc
CNSOL Centrica North Sea Oil Limited
CRL Centrica Resources Limited
CSEI Canadian Superior Energy Inc.
CTL Cometra Trinidad Limited
DEMINEX DEMINEX
DNOVO DeNovo Energy Limited
DOL Damus Oil Ltd
ECDWSL PETLO-East Coast Drilling and Workover Services Ltd
EEPTL25B Exxon Exploration and Production Trinidad 25B Limited
EEPTL26 Exxon Exploration and Production Trinidad 26 Limited
EGOTL Enron Gas & Oil Trinidad Ltd
ELF ELF Exploration Trinidad B.V.
EOG4A EOG Resources Trinidad Block 4(a) Unlimited
EOGLRL EOG Resources Trinidad-LRL Block Unlimited
EOGRTL EOG Resources Trinidad Limited
EOGUA EOG Resources Trinidad Block U (a) Unlimited
EOGUB EOG Resources Trinidad Block U (b) Unlimited
FETL PETIPSC-Fram Exploration (Trinidad) Ltd
GEPL PETIPSC -Goudron E & P Ltd.
HTL PETLO-Hydrocarb Trinidad Limited
HTL1 PETFO-Hydrocarb Trinidad Limited
JOGL PETFO-Jasmin Oil and Gas Ltd
KCL Kardway Contractors Limited
KMGTTOP Kerr McGee TT Offshore Petroleum Ltd
KPA PETFO-Krishna Persad and Associates
LBOL Los Bajos Oil Ltd
LOL PETLO-Lease Operators Ltd.
LOL1 PETIPSC-Lease Operators Ltd.
LPSL Lennox Production Services Limited
MEPRL Massy Energy Production Resources Limited
MOCL PETLO-Moonsie Oil Company
MORAVEN Mora Oil Ventures LTD
MTTPI Mobil Trinidad and Tobago Petroleum Inc.
NCL NAKT Company Limited
NGC The National Gas CO. of TandT LTD
NHETTL New Horizon Exploration Trinidad andTobago LTD
NHETTU New Horizon Exploration Trinidad and Tobago Unlimited
NHETTU1 PETLO- New Horizon Exploration Trinidad and Tobago Unlimited
NMERL Neal and Massy Energy Resources Ltd
NPMC TandT National Petroleum Marketing CO LTD.
NRL Niko Resources Limited
OSL PETLO-Oilbelt Services Ltd.
OSL1 Optimal Services Limited
PARTL Parex Resources Trinidad Ltd
PCOL Premier Consolidated Oil Limited
PCSL PETLO -Petroleum Contracting Services Ltd.
PETRINFO Petroleum Company of Trinidad and Tobago Farmouts
46
PETRINIPSC Petroleum Company of Trinidad and Tobago Incremental Production Service Contracts
PETRINLO Petroleum Company of Trinidad and Tobago Lease Operators
PETROCANADA Petro-Canada Trinidad and Tobago Limited
PETROTRIN Petroleum Company of Trinidad and Tobago
POGTL Primera Oil and Gas Trinidad Limited
POMSL Primera Oilfield Management Services Limited
PPCL Pioneer Petroleum Company Limited
REPTTL Repsol Exploration & Production Trinidad & Tobago Ltd
RPTTL Rocky Point (T&T) Limited
RRTL PETFO-Range Resources Trinidad Ltd.
RRTL1 PETIPSC-Range Resources Trinidad Ltd.
SOOGL SOOGL Antilles (Trinidad) Limited
STL Shell Trinidad LTD
TALISMAN Talisman (Trinidad) Petroleum LTD
TED Trinidad Exploration and Development LTD
TENOIL Tenneco Oil
TEPGL Trinity Exploration and Production (Galeota) Limited
TEPL Trinity Exploration and Production Limited
TEPL1 PETFO- Trinity Exploration and Production Limited
TEPL2 PETLO- Trinity Exploration and Production Limited
TERL/JV Tracmac Energy Resources LTD
TETL PETLO-Touchstone Exploration (Trinidad) Ltd
TETL1 PETFO-Touchstone Exploration (Trinidad) Ltd
TNEL Ten0 North Energy Ltd
TNR PETLO-T.N. Ramnauth and Company Ltd.
TOL PETFO- Trincan Oil Limited
TPDCL Trinidad Petroleum Development Company Ltd.
TRINMAR Trinmar LTD
TSEP Trinidad Shell Exploration and Production
TSL Territorial Services Limited
TTI Texaco Trinidad INC.
TTMAR Trinidad and Tobago Marine CO. LTD
TTOC Trindad and Tobago Oil Company Ltd.
TTPCL Trinidad Tesoro Pet. CO LTD
TTPCL1 Trinidad and Tobago Petroleum Company Limited
TWL PETLO-Trinidad Wireline Ltd.
TYI Tymer International
UTL Unocal Trinidad Limited
VETL Voyager Energy (Trinidad) Limited
VINTAGE Vintage Petroleum Trinidad Ltd
VOGTL/JV Vermilion Oil and Gas (Trinidad) LTD
VPTL Venture Production (Trinidad) LTD
WSEL Well Services Energy Limited
2.24 PACKER, PLUG TYPE

This refers to the type of packers and plugs used in drilling and workover operations. Refer to the table below to view the list of possible values:
TYPE CODE TYPE NAME

BAF Baffle
BUP Bull Plug
CEP Cement Plug
CER Cement Retainer
DBP Drillable Bridge Plug
HRP Hydraulic Retrievable Packers
LEG Legacy
MRP Mechanical Retrievable Packers
PBP Permanent Bridge Plug
PMP Permanent Packers
PP Production packers
RBP Retrievable Bridge Plug
RP Retrievable Packers
RPP Retrievable Permanent Packer
SRP Seal Bore Retrievable Packers
47
2.25 PLATFORM
Platforms are offshore facilities used in drilling and workover operations on wells. Refer to the table below to view the list of possible values:
PLATFORM CODE PLATFORM NAME

AMA Amherstia A
ARI Aripo
B16 B16-Block Station 16
BAA Banyan A
BP1 Platform 1
BP2 Platform 2
BP3 Platform 3
BP4 Platform 4
BP5 Platform 5
BP6 Platform 6
BP7 Platform 7
BP8 Platform 8
BP9 Platform 9
CAA Cassia A
CAA1 Canteen A
CAA2 Cashima A
CAB Cassia B
CAN Cannonball
CHA Chaconia A
CL1 CL1-Cluster 1
CL10 CL10-Cluster 10
CL2 CL2-Cluster 2
CL3 CL3-Cluster 3
CL4 CL4-Cluster 4
CL5 CL5-Cluster 5
CL6 CL6-Cluster 6
CL7 CL7-Cluster 7
CL8 CL8-Cluster 8
CL9 CL9-Cluster 9
DOA Dolphin A
FLA Flambouyant A
HIA Hibiscus A
IBA Ibis A
IBB Ibis B
IMA Immortelle A
48
PLATFORM CODE PLATFORM NAME
JUN Juniper Platform Code
KAA Kapok A
KAA1 Kairi A
KAB Kairi B
KIA Kiskadee A
LAND Land
LP1 Land Platform 1
LP11 Land Platform 11
LP2 Land Platform 2
LP3 Land Platform 3
LP4 Land Platform 4
MAA Mahogany A
MAA1 Mango A
MAB Mahogany B
MOA Mora A
NOP No Platform
OIA Oilbird A
OSA Osprey A
PAR Parula
PEA Pelican A
POA Poui A
POA1 POA1-Poinsettia A
POB Poui B
SAA Samaan A
SAB Samaan B
SAC Samaan C
SAV Savonette
SEA Sercan-A platform
SER Serrette
TEA Teak A
TEB Teak B
TEC Teak C
TED Teak D
TEE Teak E
TP1 Platform1
TP10 Platform 10
TP11 Platform 11
TP12 Platform 12
TP13 Platform 13
TP14 Platform 14
TP15 Platform 15
TP16 Platform 16
TP17 Platform 17
TP18 Platform 18
TP19 Platform 19
TP2 Platform 2
TP20 Platform 20
TP21 Platform 21
TP22 Platform 22
TP23 Platform 23
TP24 Platform 24
TP3 Platform 3
TP4 Platform 4
TP5 Platform 5
TP6 Platform 6
TP7 Platform 7
TP8 Platform 8
TP9 Platform 9
TRA Trintes A
TRB Trintes B
TRC Trintes C
TRD Trintes D
TSC TSC-Three Slot Cluster
49
2.26 PRODUCTION METHOD
This is a technique to extract hydrocarbons from a completed well. Use in the PROD1. Refer to the table below to view the list of possible values:
PRODUCTION METHOD CODE PRODUCTION METHOD NAME

FLG Flowing Gas
FLO Flowing Oil
GLO Gas Lift Oil
LEG Legacy
NCP No Current Production
OTO Other Oil
PLO Plunger Lift Oil
PUO Pumping Oil
PUW Pumping Water
STI Steam Injector
SWO Swabbing Oil
2.27 PRODUCTION STATUS

This is the list of the values for the codes describing the end of month status of the stages. Use for the PROD1 and PROD4 - EOM Status. Click in the icon
below to view the list of possible values:
PRODUCTION STATUS CODE PRODUCTION STATUS DETAIL

WSABA Abandoned
WSCAW Closed In Awaiting Workover
WSCBH Closed In For Bottom Hole Pressure
WSCBS Closed In Behind Sliding Sleeve
WSCDI Carbon Dioxide Injection
WSCFO Closed In For Observation
WSCHG Closed In For High Gas Oil Ratio
WSCHW Closed In High Water Cut
WSCIO Closed In Other Reasons
WSCLU Closed In Uneconomic
WSCRE Closed In Requiring Equipment/Repair
WSFLG Flowing Gas
WSFLO Flowing Oil
WSGAI Gas Injection
WSGLO Gas Lift Oil
WSOTO Other Oil
WSPUO Pumping Oil
WSSTC Stop Cocking
WSSTI Steam Injection
WSSWO Swabbing Oil
WSWAI Water Injection
2.28 PROJECTION
This refers to the projection types. Refer to the table below to view the list of possible values:
PROJECTION CODE PROJECTION NAME

CASSINI-SOLDNER-CLLKS Cassini Soldner - Old Trinidad 1903, LINKS CLARKE
CASSINI-SOLDNER-FTCLA Cassini Soldner - Old Trinidad 1903, FEET CLARKE
GEODETIC Geodetic Coordinate system, datum WGS84
GEODETIC-TRIN1903 Geodetic Coordinate system, datum Old Trinidad 1903
GEODETIC-WGS84 Geodetic Coordinate system, datum WGS84
UTM ZONE 20 NPRM UTM Zone 20 NPRM, Meters
UTM8420 UTM Zone 20 - WGS84, Meters
UTM8420-FTUS UTM Zone 20 - WGS84, FEET US
UTM8421 UTM Zone 21 - WGS84, Meters
UTM8421-FTUS UTM Zone 21 - WGS84, FEET US
2.29 RIG TYPE

This refers to the types of rigs used in oilfield operations. Refer to the table below to view the list of possible values:
RIG TYPE CODE RIG TYPE NAME

BAR Barge
50
RIG TYPE CODE RIG TYPE NAME
DRS Drillship
JAC Jack-up
LAR Land Rig
MOD Modular
PLT Platform
SSU Semi-submersible
SUB Submersible
2.30 ROYALTY CODE

This refers to the rights of ownership of property. Refer to the table below to view the list of possible values:
ROYALTY CODE ROYALTY DESCRIPTION

11 State Rights
12 Sate with Encroachment on Private Freehold.
13 State with Encroachment on Private Leasehold.
14 State Rights Alienated
15 State Rights -Alienated with Encroachment on Private Freehold
16 State Rights -Alienated with Encroachment on Private Leasehold
21 Private Rights -Freehold
22 Private Rights -Freehold with Encroachment on State.
23 Private Rights -Leasehold
24 Private Rights Leasehold with Encroachment on State
31 Production Sharing Contract
2.31 SALES TO OTHER COMPANIES (PROD3)

When gas sales are done to other companies and reported on the PROD3 form, these codes identify the receiving party.
CODE DESCRIPTION
ALNGT1 Atlantic LNG Train 1
ATLASMETHANOL Atlas Methanol
BANYAN Banyan
CNC CNC
GORTT Government of the Republic of Trinidad and Tobago
M5000 M5000
N2000 N2000
PETROTRIN Petroleum Company of Trinidad and Tobago Limited
2.32 SURFACE RIGHT

This refers to surface right types. Refer to the table below to view the list of possible values:
ASSOC_ID ASSOC_NAME
PRIVATE PRIVATE
STATE STATE
2.33 SURVEY COMPANY

This refers to the companies in charge of executing surveys in drilling and workover operations. Refer to the table below to view the list of possible values:
SURVEY COMPANY CODE SURVEY COMPANY NAME

ABS Absolute Imaging Inc.
ANS Anadrill Schlumberger
BAA Baker Atlas
BHI Baker Hughes International
BHI1 Baker Hughes Inteq
BHTL Baker Hughes (Trinidad) Limited
BMS Baroid McCullough Services
BSI BJ Services International S.A
CGG CGG
DISSL Drilling International Services and Supplies Ltd
DUG DownUnder GeoSolutions
EDGE Edge Technologies Inc.
51
SURVEY COMPANY CODE SURVEY COMPANY NAME
FUGRO Fugro N.V.

GEI Gearhart International
GEOS GeoServices
GEOSIG Geosignals LLC
GEOTR Geotrace Technologies Limited
GGARDLINE Gardline Marine Sciences
GOI GO International
HTL Halliburton Trinidad Limited
INL International Logging
ION Ion Geophysical
LEG Legacy
LOC LandOcean Energy Services Company Limited
LUMINA Lumina Geophysical LLC
NHETTL New Horizon Exploration Trinidad and Tobago Limited
PAF PathFinder Energy Services
RSC Reeves Services Company
SCW Schlumberger Wireline
SDI Scientific Drilling International
SENSOR Sensor Geophysical Limited
SHARP Sharp Reflections
SINOPEC Sinopec Corp.
SPECTRUM Spectrum Geophysics Limited
SSDS Sperry Sun Drilling Services
SSI Sperry Sun International
STI Schlumberger Trinidad Inc.
TEL Teleco
TES Tucker Energy Services
TOL Trincan Oil Limited
TOS Trinidad Oilwell Services
TPS Trinidad Petroleum Servcices
TRI2 Trican
TTEEC TEEC Geophysics
TWCL Trinidad Well Control Limited
TWS Tucker Wireline Services
UML Upstream Management Limited
WAI Western Atlas International
WEL WELEX
WGECO WesternGeco
WSL Well Services Limited
2.34 SURVEY TYPE

The type of survey runs in the well during logging operations. Refer to the table below to see the list of possible values:
SURVEY TYPE CODE SURVEY TYPE NAME

Borehole Profile Borehole Profile
Casing Bond Log Casing Bond Log
Casing Collar Locator Casing Collar Locator
Cement Evaluation Tool Cement Evaluation Tool
Cement Hydraulic Log Cement Hydraulic Log
Checkshot Survey Checkshot Survey
Composite Log Composite Log
Density Density
Dipmeter Dipmeter
Gamma Ray Gamma Ray
Image Logs Image Logs
Induction Log Induction Log
Legacy Legacy
Modular Dynamic Tester Modular Dynamic Tester
Mud Log Mud Log
Neutron Neutron
Neutron/Density Neutron/Density
Nuclear Logs Nuclear Logs
Porosity Log Porosity Log
52
SURVEY TYPE CODE SURVEY TYPE NAME
Reservoir Formation Tester Reservoir Formation Tester
Resistivity Resistivity
Sonic Acoustic Sonic Acoustic
Spontaneous Potential Spontaneous Potential
Unknown Unknown
Vertical Seismic Profile Vertical Seismic Profile
2.35 TUBING SIZE / GRADE

This refers to the types of tubing used in drilling and workover operations. Refer to the table below to view the list of possible values:
OUTSIDE DIAMETER INCHES NOMINAL WEIGHT LB/FT GRADE INSIDE DIAMETER INCHES
1.05 1.14 C-90 0.824
1.05 1.14 T-95 0.824
1.05 1.14 L-80 0.824
1.05 1.14 J-55 0.824
1.05 1.14 H-40 0.824
1.05 1.54 P-110 0.742
1.05 1.54 T-95 0.742
1.05 1.54 C-90 0.742
1.05 1.54 N-80 0.742
1.05 1.54 L-80 0.742
1.05 1.54 J-55 0.742
1.05 1.54 H-40 0.742
1.05 1.2 T-95 0.824
1.05 1.2 C-90 0.824
1.05 1.2 N-80 0.824
1.05 1.2 L-80 0.824
1.05 1.2 J-55 0.824
1.05 1.2 H-40 0.824
1.05 1.14 N-80 0.824
1.315 2.24 J-55 0.957
1.315 2.24 L-80 0.957
1.315 2.24 N-80 0.957
1.315 2.24 C-90 0.957
1.315 2.24 T-95 0.957
1.315 2.24 H-40 0.957
1.315 1.8 T-95 1.049
1.315 1.8 C-90 1.049
1.315 1.8 N-80 1.049
1.315 1.8 L-80 1.049
1.315 1.8 J-55 1.049
1.315 1.8 H-40 1.049
1.315 1.72 T-95 1.049
1.315 1.72 C-90 1.049
1.315 1.72 N-80 1.049
1.315 1.72 L-80 1.049
1.315 1.72 J-55 1.049
1.315 1.72 H-40 1.049
1.315 1.7 T-95 1.049
1.315 1.7 C-90 1.049
1.315 1.7 N-80 1.049
1.315 2.24 P-110 0.957
1.315 1.7 J-55 1.049
1.315 1.7 H-40 1.049
1.315 1.7 L-80 1.049
1.66 3.07 H-40 1.278
1.66 3.07 J-55 1.278
1.66 3.07 L-80 1.278
1.66 3.07 N-80 1.278
1.66 3.07 C-90 1.278
1.66 3.07 T-95 1.278
1.66 3.07 P-110 1.278
1.66 2.1 H-40 1.41
1.66 2.1 J-55 1.41
53
1.66 2.3 H-40 1.38
1.66 2.3 J-55 1.38
1.66 2.3 L-80 1.38
1.66 2.3 N-80 1.38
1.66 2.3 C-90 1.38
1.66 2.3 T-95 1.38
1.66 2.33 H-40 1.38
1.66 2.33 J-55 1.38
1.66 2.33 L-80 1.38
1.66 2.33 N-80 1.38
1.66 2.33 C-90 1.38
1.66 2.33 T-95 1.38
1.66 2.4 H-40 1.38
1.66 2.4 J-55 1.38
1.66 2.4 L-80 1.38
1.66 2.4 N-80 1.38
1.66 2.4 C-90 1.38
1.66 2.4 T-95 1.38
1.9 2.4 H-40 1.65
1.9 5.15 T-95 1.3
1.9 2.75 H-40 1.61
1.9 2.75 J-55 1.61
1.9 2.75 L-80 1.61
1.9 2.75 N-80 1.61
1.9 2.75 C-90 1.61
1.9 2.75 T-95 1.61
1.9 2.76 H-40 1.61
1.9 2.76 J-55 1.61
1.9 2.76 L-80 1.61
1.9 2.76 N-80 1.61
1.9 2.76 C-90 1.61
1.9 2.76 T-95 1.61
1.9 2.9 H-40 1.61
1.9 2.9 J-55 1.61
1.9 2.9 L-80 1.61
1.9 2.9 N-80 1.61
1.9 2.9 C-90 1.61
1.9 2.9 T-95 1.61
1.9 3.73 H-40 1.5
1.9 3.73 J-55 1.5
1.9 3.73 L-80 1.5
1.9 3.73 N-80 1.5
1.9 3.73 C-90 1.5
1.9 3.73 T-95 1.5
1.9 3.73 P-110 1.5
1.9 4.42 L-80 1.4
1.9 4.42 C-90 1.4
1.9 4.42 T-95 1.4
1.9 5.15 L-80 1.3
1.9 5.15 C-90 1.3
1.9 2.4 J-55 1.65
2.063 4.5 T-95 1.613
2.063 4.5 C-90 1.613
2.063 4.5 N-80 1.613
2.063 4.5 L-80 1.613
2.063 4.5 J-55 1.613
2.063 4.5 H-40 1.613
2.063 4.5 P-110 1.613
2.063 3.25 C-90 1.751
2.063 3.25 N-80 1.751
2.063 3.25 L-80 1.751
2.063 3.25 J-55 1.751
2.063 3.25 H-40 1.751
2.063 3.25 T-95 1.751
54
2.375 4.7 H-40 1.995
2.375 4.7 J-55 1.995
2.375 4.7 L-80 1.995
2.375 4.7 N-80 1.995
2.375 4.7 C-90 1.995
2.375 4.7 T-95 1.995
2.375 4.7 P-110 1.995
2.375 5.8 L-80 1.867
2.375 5.8 C-90 1.867
2.375 5.8 N-80 1.867
2.375 5.8 T-95 1.867
2.375 5.8 P-110 1.867
2.375 5.95 L-80 1.867
2.375 5.95 C-90 1.867
2.375 5.95 N-80 1.867
2.375 5.95 T-95 1.867
2.375 5.95 P-110 1.867
2.375 6.6 L-80 1.785
2.375 6.6 C-90 1.785
2.375 6.6 T-95 1.785
2.375 7.35 L-80 1.703
2.375 7.35 C-90 1.703
2.375 7.35 T-95 1.703
2.375 7.45 L-80 1.703
2.375 7.45 C-90 1.703
2.375 7.45 T-95 1.703
2.375 4.6 T-95 1.995
2.375 4.6 C-90 1.995
2.375 4.6 N-80 1.995
2.375 4.6 L-80 1.995
2.375 4.6 J-55 1.995
2.375 4.6 H-40 1.995
2.375 4 T-95 2.041
2.375 4 C-90 2.041
2.375 4 N-80 2.041
2.375 4 L-80 2.041
2.375 4 J-55 2.041
2.375 4 H-40 2.041
2.375 4.6 P-110 1.995
2.875 6.4 H-40 2.441
2.875 6.4 J-55 2.441
2.875 6.4 L-80 2.441
2.875 6.4 N-80 2.441
2.875 6.4 C-90 2.441
2.875 6.4 T-95 2.441
2.875 6.4 P-110 2.441
2.875 6.5 H-40 2.441
2.875 6.5 J-55 2.441
2.875 6.5 L-80 2.441
2.875 6.5 N-80 2.441
2.875 6.5 C-90 2.441
2.875 6.5 T-95 2.441
2.875 6.5 P-110 2.441
2.875 7.8 L-80 2.323
2.875 7.8 N-80 2.323
2.875 7.8 C-90 2.323
2.875 7.8 T-95 2.323
2.875 7.8 P-110 2.323
2.875 7.9 L-80 2.323
2.875 7.9 N-80 2.323
2.875 7.9 C-90 2.323
2.875 7.9 T-95 2.323
2.875 7.9 P-110 2.323
2.875 8.6 L-80 2.259
55
2.875 8.6 N-80 2.259
2.875 8.6 C-90 2.259
2.875 8.6 T-95 2.259
2.875 8.6 P-110 2.259
2.875 8.7 L-80 2.259
2.875 8.7 N-80 2.259
2.875 8.7 C-90 2.259
2.875 8.7 T-95 2.259
2.875 8.7 P-110 2.259
2.875 9.35 L-80 2.195
2.875 9.35 C-90 2.195
2.875 9.35 T-95 2.195
2.875 9.45 L-80 2.195
2.875 9.45 C-90 2.195
2.875 9.45 T-95 2.195
2.875 10.5 L-80 2.091
2.875 10.5 C-90 2.091
2.875 10.5 T-95 2.091
2.875 11.5 L-80 1.995
2.875 11.5 C-90 1.995
2.875 11.5 T-95 1.995
3.5 7.7 H-40 3.068
3.5 17 T-95 2.44
3.5 7.7 L-80 3.068
3.5 7.7 N-80 3.068
3.5 7.7 C-90 3.068
3.5 7.7 T-95 3.068
3.5 9.2 H-40 2.992
3.5 9.2 J-55 2.992
3.5 9.2 L-80 2.992
3.5 9.2 N-80 2.992
3.5 9.2 C-90 2.992
3.5 9.2 T-95 2.992
3.5 9.2 P-110 2.992
3.5 9.3 H-40 2.992
3.5 9.3 J-55 2.992
3.5 9.3 L-80 2.992
3.5 9.3 N-80 2.992
3.5 9.3 C-90 2.992
3.5 9.3 T-95 2.992
3.5 9.3 P-110 2.992
3.5 10.2 H-40 2.922
3.5 10.2 J-55 2.922
3.5 10.2 L-80 2.922
3.5 10.2 N-80 2.922
3.5 10.2 C-90 2.922
3.5 10.2 T-95 2.922
3.5 12.7 L-80 2.75
3.5 12.7 N-80 2.75
3.5 12.7 C-90 2.75
3.5 12.7 T-95 2.75
3.5 12.7 P-110 2.75
3.5 12.95 L-80 2.75
3.5 12.95 N-80 2.75
3.5 12.95 C-90 2.75
3.5 12.95 T-95 2.75
3.5 12.95 P-110 2.75
3.5 14.3 L-80 2.64
3.5 14.3 C-90 2.64
3.5 14.3 T-95 2.64
3.5 15.5 L-80 2.548
3.5 15.5 C-90 2.548
3.5 15.5 T-95 2.548
3.5 17 L-80 2.44
56
3.5 17 C-90 2.44
3.5 7.7 J-55 3.068
4 9.5 H-40 3.548
4 9.5 J-55 3.548
4 9.5 L-80 3.548
4 9.5 N-80 3.548
4 9.5 C-90 3.548
4 9.5 T-95 3.548
4 11 H-40 3.476
4 11 J-55 3.476
4 11 L-80 3.476
4 11 N-80 3.476
4 11 C-90 3.476
4 11 T-95 3.476
4 13.2 L-80 3.34
4 13.2 C-90 3.34
4 13.2 T-95 3.34
4 16.1 L-80 3.17
4 16.1 C-90 3.17
4 16.1 T-95 3.17
4 18.9 L-80 3
4 18.9 C-90 3
4 18.9 T-95 3
4 22.2 L-80 2.78
4 22.2 C-90 2.78
4 22.2 T-95 2.78
4.5 18.9 C-90 3.64
4.5 18.9 L-80 3.64
4.5 21.5 L-80 3.5
4.5 21.5 C-90 3.5
4.5 21.5 T-95 3.5
4.5 23.7 L-80 3.38
4.5 23.7 C-90 3.38
4.5 23.7 T-95 3.38
4.5 26 L-80 3.24
4.5 26 C-90 3.24
4.5 26 T-95 3.24
4.5 12.6 H-40 3.958
4.5 12.6 J-55 3.958
4.5 12.6 L-80 3.958
4.5 12.6 N-80 3.958
4.5 12.6 C-90 3.958
4.5 12.6 T-95 3.958
4.5 12.75 H-40 3.958
4.5 12.75 J-55 3.958
4.5 12.75 L-80 3.958
4.5 12.75 N-80 3.958
4.5 12.75 C-90 3.958
4.5 12.75 T-95 3.958
4.5 15.2 L-80 3.826
4.5 15.2 C-90 3.826
4.5 15.2 T-95 3.826
4.5 17 L-80 3.74
4.5 17 C-90 3.74
4.5 17 T-95 3.74
4.5 18.9 T-95 3.64
2.36 UWI (UNIQUE WELL IDENTIFIER)

The UWI is a unique identifier used by the database to associate all wellbore related tables in the Master Data Store.
The UWI generated at the DRL-2 stage is the same Drilling Program Number. All the information generated by the Operator at this stage and loaded into the
Master Data Store will represent the well proposed (and not the “real” well), whose data will be preserved for future references. For information about the
Drilling Program Number, please refer to item 2.8.
Once the DRL-2 is approved, the well is spudded and a new well is loaded into the Master Data Store representing the “real” well. The UWI generated at this
57
stage will have the following nomenclature:
Country Field Code Platform Code Internal Sequential Number based on Hole
Code (TT) (Country Code + Field Code + Platform Number
Code + Well Number Prefix + Well Number
Sequential Number)
T T A N G C E B 0 0 0 0 0 0 3 0 2
Platform Code can be in fact the code of a Platform, a Cluster or a Block Station; and for those wells not attached to any of these surface facilities, it can be
“LAND” for wells on land or “NOP” for offshore wells (mostly exploratory wells). For information about Platform Codes, please refer to item 2.1, 2.4 and 2.20.
2.37 WELL LAHEE CLASSIFICATION

The Lahee classification standard is used to classify oil & gas wells according to their objective. Refer to the table below to see the list of possible values:
LAHEE
DESCRIPTION DEFINITION
CODE
A well located within an area of development drilling or adjacent to such but not more than two
A.0 Development
customary spacings from a producible well.
Outpost (Extension Test) (Semi- A well of which the objective is to extend a partly developed pool or follow up of a prospect revealed by
A.1
Exploratory) drilling.
A.2a Shallower Pool Test A well which is located within an area of development drilling.
A.2b Deeper Pool Test A well which is located outside a development area.
A.2c New Pool Wildcat ( A.2c ) A well which is located outside a development area.
A new field exploratory well is a well drilled on a structure, or in an area, where petroleum has not yet
A.3 New Field Wildcat
been discovered.
LEG Legacy
2.38 WELL NAME

The well name refers to the full legal name of a well without abbreviations. In order to make it unique, the field and the platform code are added as prefixes. The
Well Name nomenclature is generated using the following rule:
Field Code Dash Platform Code Dash MEEI's Well Name or Number (+ Hole Types e.g. ST1,X, XST1,etc.)
A. ANG-CEB-BARAKA_EAST_1 (EXPLORATORY WELLS)
B. FOR-LAND-231 (DEVELOPMENT WELLS)
Platform Code can be the code of a Platform, a Cluster or a Block Station; and for those wells not attached to any of these surface facilities, it can be “LAND” for
wells on land or “NOP” for offshore wells (mostly exploratory wells).
For information about the MEEI’s Well Number nomenclature, please see below:
Well Nomenclature
Exploratory and Semi-exploratory wells:
For exploratory and semi-exploratory wells the well name must contain no spaces. The well name may contain dashes as per the field and platform code,
however underscores should be used instead of spaces. See an example below:
CEB-LAND-BARAKA_EAST_1 instead of CEB-LAND-BARAKA EAST 1.
Sidetrack (ST) well:
If the well has been sidetracked then the naming of the well shall be altered to reflect this, by putting a (ST1) notation after the number of the well. If there are
additional sidetracks on the same well then the next available sidetrack number should be used (e.g. ST2, ST3, ST4 etc.). A well shall be considered to be
sidetracked if the original hole was not completed and if the second hole (sidetrack) is within 200 ft of the original hole or within the originally programmed
deviation tolerance as indicated on the DRL-2 or on an attachment to the DRL-2 (see below on how to make measurements). All wells that are inadvertently
sidetracked outside the 200ft limit requires a DRL-2A form to be submitted for informational purposes and will not require approval. This wellbore will be an X-
well (see below).
If a "pilot hole" is drilled on purpose, as is done in some cases to determine the top of the objective horizon, and this well bore is sidetracked into this objective
horizon then the second well bore will be an ST regardless of the distance between the wellbores.
X – wells:
A well will be considered an X-well (X) where the following conditions apply:
(a) The original well may or may not have been completed
And
(b) Either
(1) The objective target of the second hole falls outside 200 ft of the objective target of the original hole (see next section for an explanation).
58
Or
(2) Where sufficient evidence exists that the geological objective target of the second hole is different from the geological objective of the original hole (even if
less than 200 ft.)
Fig. 1 shows a well, A, that penetrated the FX sand. Subsequently another wellbore was drilled from it - B. Wellbore B penetrates the FY sand, a different
geological formation than the FX sand. Thus B would be an X-well since it penetrates a different geological formation than well A.
All proposed X – wells will be submitted to the Ministry of Energy and Energy Industries as a Drilling Programme on a DRL-2 form.
Measurement of the distance between wells to determine whether less or greater than 200 ft apart:
Case 1:
If the sidetracked wellbore penetrates the same geological objective target as the original wellbore, then the distance between the wellbores shall be measured
from the shortest distance between the wellbores within the geological objective target.
Fig. 2 shows a well, A, penetrating the 1-sand initially at point C. Suppose for some reason the well was not or could not be completed and a new wellbore was
drilled from it, B. If this new wellbore penetrates the same 1-sand initially at point D, then the shortest distance between A and B is the distance CD. If the
distance, CD, were greater than 200 feet then B would be an X-well of A. If not, then it would be a sidetrack (ST) of A.
Case 2:
If the sidetracked wellbore penetrates the geological objective target but the original wellbore did not, because of, for example, mechanical reasons, then the
distance between the wellbores shall be measured from the shortest distance between the planned trajectory of the original wellbore and the sidetracked
wellbore within the geological objective target.
59
Fig. 3 shows that well A did not penetrate the 1-sand maybe due to mechanical problems. If wellbore B is drilled from A as shown and does penetrate the 1-
sand initially at point D then the shortest distance between the wells will be the distance CD. The point C is the point at which well A would have penetrated
the 1-sand according to the deviation programme submitted on the DRL-2.
Re-drilled hole (RD)
A well will be considered a Re-drilled well (RD) where the following conditions apply:
a. The original hole must have been completed, and

b. The objective target of the second hole must be within 200ft of the objective target of the original hole. Where the objective target of the second hole is
within 200ft of the original hole and was previously present in the original hole
c. (where the objective target of the second well bisects the original hole) then the second hole will still be called a Re-drilled well.
All Re-drilled holes will be submitted to the Ministry of Energy and Energy Industries as a Workover Programme on a WO-1 form, indicating the target
coordinates on the top of that form.
Naming re-drilled wells is similar to the required nomenclature for sidetrack wells. The first redrill should be indicated by putting a (RD1) notation after the
number of the well. If there are additional redrills on the same well then the next available redrill number should be used (e.g. RD2, RD3, RD4 etc.).
Lateral and Multilateral Wells
Lateral Wells:
For lateral wells, the letter "L" will be used to denote its deviation from the vertical plane. This will include horizontal wells, not deviated wells. All lateral wells
drilled in the past and hereafter will carry this notation, with the letter "L" being placed as the final symbol in the lateral well name.
Multilateral Wells
For multilateral wells, the notation "F1" shall be placed before the letter "L" to denote that this is the first formation with a lateral well. If another well bore is
drilled from this well as another lateral to the same geological objective target then, this well will be called "L2" to denote that it is the second lateral.
Successive numbers shall be used thereafter to denote further laterals to the same horizon (L3 etc.). If the new well bore is not drilled to the same geological
objective target horizon then the notation "F2" shall be used to denote the new formation and the first lateral will be called "L1" and this is placed after "F2".
Proper sketches will be needed to identify the exact location of these laterals that must tie back to the assigned names.
For example, consider wells drilled from the Mahogany "Alpha" Platform:
MA6F1L1 will be the name of the original well bore, the first lateral drilled to the first objective formation.
MA6F1L2 will be the name of the second lateral drilled to the same horizon as MA6F1L1.
MA6F2L1 will be name of the first lateral drilled to a first different horizon of MA the previous well.
MA6F1L1 and MA6F1L2, etc. would be considered to be the same well, so only one DRL-2 needs to be submitted. However since MA6F2L1 is drilled to a new
formation, a new DRL-2 needs to be submitted for this well.
If MA6 is sidetracked to a third formation, after MA6F2L1 is drilled, the new well, if not a horizontal well, will be called MA6F31.
60
Fig. 4 shows a multilateral well, Peanuts-1 drilled by a jack-up rig. Two laterals were drilled to the XP sand and then another lateral was drilled to a different
sand higher in structure – the FA sand. The names of the different laterals in order in which they were drilled are as follows:
Well #1: Peanut-1F1L1

Well Completion
Development Wells:
A development well would be deemed completed after the completion equipment has been installed and the well is tested as approved by the Ministry of
Energy and Energy Industries.
Exploration Wells:
An Exploration well would be deemed completed after the well has been plugged and abandoned as approved by the Ministry of Energy and Energy
Industries.
2.39 WELL STATUS

This highlights the current status of a well. Use in the WO2. Refer to the table below to view the list of possible values:
WELL STATUS CODE WELL STATUS DESCRIPTION

ABA Abandoned
CAW Closed In Awaiting Workover
CBH Closed In For Bottom Hole Pressure
CBS Closed In Behind Sliding Sleeve
CDI Carbon Dioxide Injection
CFO Closed In For Observation
CHG Closed In For High Gas Oil Ratio
CHW Closed In High Water Cut
CIO Closed In Other Reasons
CLU Closed In Uneconomic
CRE Closed In Requiring Equipment/Repair
FLG Flowing Gas
FLO Flowing Oil
GAI Gas Injection
GLO Gas Lift Oil
OTO Other Oil
PUO Pumping Oil
STC Stop Cocking
STI Steam Injection
SWO Swabbing Oil
WAI Water Injection
2.40 WINCH TYPE

A winch is a machine used for pulling or hoisting that does so by winding a cable around a spool. Refer to the table below to view the list of possible values:
61
WINCH TYPE CODE WINCH TYPE NAME
1 Pneumatic
2 Hydraulic
3 Electric
2.41 WORKOVER PROGRAM NUMBER

This is a number that identifies a specific workover operation. The nomenclature is generated using the following rule:
Operator Code Field Code Sequential Submission Year

Number
A R C O A R I 1 1 1 2 0 0 4
For information about Operator Code, please refer to item 2.18. If the Operator Code has more than 8 characters, the code will be truncated to 8 characters.
The sequential number is assigned to each individual company for programs from 1st January to 31st December of each year.
2.42 WORKOVER STATUS

This highlights the current status of a workover operation. Used in the WO3. Refer to the table below to view the list of possible values:
WORKOVER STATUS CODE WORKOVER STATUS NAME

WO10 Workover Completed
WO20 Working On
WO30 Job Suspended
WO40 Job Aborted
2.43 WORKOVER TYPE

This is any work performed on a well to sustain or increase production or injection, which may physically change its down-hole condition. Refer to the table
below to view the list of possible values:
WORKOVER TYPE CODE WORKOVER TYPE NAME

ABD ABANDONMENT
ALT ALTERATION
CON CONVERSION
DABD DEABANDONMENT
NMA NON-MINISTRY APPROVED
RDR REDRILL
REC RECOMPLETION
RPR REPAIR
SCN SAND CONTROL
STM STIMULATION
TRT TREATMENT
2.44 EWELLFILE CATEGORY

Description to be done
CODE DESCRIPTION
ANA0100 Analyses - Geological Survey Report
ANA0200 Analyses - Geochemical Analysis Report
ANA0300 Analyses - Core Analysis Report
ANA0400 Analyses - Biostratigraphic Report
ANA0500 Analyses - Palaeontology Report
ANA0600 Analyses - Palynological Report
ANA0700 Analyses - Borehole Seismic Report
ANA0800 Analyses - Dipmeter Report
ANA0900 Analyses - Geopressure Report
ANA1000 Analyses - Core Description
ANA1100 Analyses - Sand Thickness Record
ANA1200 Analyses - Stratigraphy Report
ANA1300 Analyses - Chemostratigraphy Report
ANA1400 Analyses - Petrographic Analysis Report
ANA1500 Analyses - Formation Evaluation Report
ANA1600 Analyses - Lithology Report
ANA1700 Analyses - Petrophysical Analysis Report
ANA1800 Analyses - Log Interpretation
62
CODE DESCRIPTION
ANA1900 Analyses - Reservoir Fluid Study
ANA2000 Analyses - Processing Report
ANA2100 Analyses - Vertical Seismic Profile (VSP)
COR0100 Correspondence - Letters Executive
COR0200 Correspondence - Memos Executive
COR0300 Correspondence - Notices
COR0400 Correspondence - eMails
COR0500 Correspondence - Transmittal
COR0600 Correspondence - Name Change
DCN0100 Drilling, Completion and Workovers - Final Well Report
DCN0200 Drilling, Completion and Workovers - Post Well Evaluation Report
DCN0300 Drilling, Completion and Workovers - Drilling Reports
DCN0400 Drilling, Completion and Workovers - Workover Reports
DCN0500 Drilling, Completion and Workovers - Well Completion Reports
DCN0600 Drilling, Completion and Workovers - Casing & Cementation Details
DCN0700 Drilling, Completion and Workovers - Special Remarks on Drilling & Completion
DCN0800 Drilling, Completion and Workovers - Mud Loggers Report
DCN0900 Drilling, Completion and Workovers - Well Treatment Report
DCN1000 Drilling, Completion and Workovers - Certificate of Abandonment
DCN1100 Drilling, Completion and Workovers - Coring Report
DCN1200 Drilling, Completion and Workovers - Daily Geological Report
DCN1300 Drilling, Completion and Workovers - Abandonment Approval
DCN1400 Drilling, Completion and Workovers - Well Log QC Report
DCN1500 Drilling, Completion and Workovers - Clean Up Report
DCN1600 Drilling, Completion and Workovers - Monthly Log Abstract
DCN1700 Drilling, Completion and Workovers - Bit Record
DCN1800 Drilling, Completion and Workovers - Abandonment Report
DCN1900 Drilling, Completion and Workovers - Notification of Water
DCN2000 Drilling, Completion and Workovers - Certificate of Test for Water Shut-Off
DCN2100 Drilling, Completion and Workovers - Mud History
DCN2200 Drilling, Completion and Workovers - Job Report
DIR0100 Directional Surveys - Calculation Sheet
DIR0200 Directional Surveys - Directional Log
DIR0300 Directional Surveys - Final Survey Co-ordinates
DIR0400 Directional Surveys - Directional Data
DIR0500 Directional Surveys - Well Location
DIR0600 Directional Surveys - Deviation Survey
ECT0100 Economics, Cost - Cost Summary
ECT0200 Economics, Cost - Economic Parameters
HSE0100 HSE - Certificate of Environmental Clearance
HSE0200 HSE - Safety Program Report
HSE0300 HSE - Accident Report
HSE0400 HSE - Emergency Response Plan
HSE0500 HSE - Environmental Impact Assessment
HSE0600 HSE - Shallow Hazard Report
HSE0700 HSE - Geotechnical Report
HSE0800 HSE - Incident Report
HSE0900 HSE - Site Visit Checklist
HSE1000 HSE - BOP Testing
MIS0100 Miscellaneous - Other
MIS0200 Miscellaneous - Well Summary/ History
MOE0000 Ministry Forms - DRL 1
MOE0200 Ministry Forms - DRL 2 Approval
MOE0201 Ministry Forms - DRL 2 Sub Section
MOE0401 Ministry Forms - DRL 5 Section 1
MOE0402 Ministry Forms - DRL 5 Section 2
MOE0403 Ministry Forms - DRL 5 Sub Section
MOE0500 Ministry Forms - WO 1
MOE0501 Ministry Forms - WO 1 Attachment
MOE0600 Ministry Forms - WO 1 Approval
63
CODE DESCRIPTION
MOE0701 Ministry Forms - WO 2 Attachment
MOE0800 Ministry Forms - DRL2 Attachment
PRD0100 Production History - RFT
PRD0200 Production History - PVT Analysis
PRD0300 Production History - Crude Oil Analysis
PRD0400 Production History - Water Analysis
PRD0500 Production History - Production Report
PRD0600 Production History - Monthly/Daily Production Record
PRD0700 Production History - Surrounding Well Data
PRD0800 Production History - Stimulation Reports
PRD0900 Production History - Production Test Report
PRD1000 Production History - Pore Pressure Plot
PRD1100 Production History - BHP Test Report
PRD1200 Production History - Pressure Survey
PRD1300 Production History - DST
PRD1400 Production History - Production History
PRD1500 Production History - Well Test Data
PRD1600 Production History - Production Forecast
PRG0100 Proposed Programmes - Drilling Programme
PRG0200 Proposed Programmes - Sampling Programme
PRG0300 Proposed Programmes - Casing Programme
PRG0400 Proposed Programmes - Mud Programme
PRG0500 Proposed Programmes - Work-over Programme
PRG0600 Proposed Programmes - Well Servicing/ Maintenance Programme
PRG0700 Proposed Programmes - Plug & Abandonment Programme
PRG0800 Proposed Programmes - Formation Evaluation Programme
PRG0900 Proposed Programmes - Geological Justification
PRG1000 Proposed Programmes - Completion Programme
PRG1100 Proposed Programmes - Initial Completion Programme
PRG1200 Proposed Programmes - Well Testing Programme
PRG1300 Proposed Programmes - Suspension/ Insolation Programme
PRG1400 Proposed Programmes - Perforating Programme
PRG1500 Proposed Programmes - Cementing Programme
PRG1600 Proposed Programmes - Bit Programme
SCH0100 Schematics - Drill Time Curve
SCH0200 Schematics - Well bore Schematic
SCH0300 Schematics - Deviation Diagram
SCH0400 Schematics - Seismic Section
SCH0500 Schematics - Log Correlation
SCH0600 Schematics - Cross-Section
SCH0700 Schematics - Maps/Montage
SCH0800 Schematics - Pore Pressure Curve
SCH0900 Schematics - Completions
SCH1000 Schematics - Stick Diagram
SCH1100 Schematics - TVD
SCH1200 Schematics - Graphs
SCH1201 Schematics - Graphs - Well Test Curve
SCH1202 Schematics - Graphs - Decline Curve
SCH1203 Schematics - Graphs - Production and Injection
SCH1300 Schematics - Proposed Wellbore Diagram
SCH1400 Schematics - Present Wellbore Diagram
SCH1500 Schematics - BHA Schematic
WEL0100 Well Logs - Lithology Log
WEL0200 Well Logs - Mud Log
WEL0300 Well Logs - Formation Evaluation Log
WEL0400 Well Logs - Wireline Log
WEL0401 Well Logs - Wireline Log- Electrical-Resistivity, Induction, Conduction
WEL0402 Well Logs - Wireline Log- Gamma Ray
WEL0403 Well Logs - Wireline Log- Density/Porosity
WEL0404 Well Logs - Wireline Log- Acoustic
WEL0405 Well Logs - Wireline Log- Nuclear
WEL0406 Well Logs - Wireline Log- Magnetic Resonance
64
CODE DESCRIPTION
WEL0407 Well Logs - Wireline Log- Caliper
WEL0500 Well Logs - Borehole Seismic
WEL0600 Well Logs - Thin Section Photos
WEL0700 Well Logs - Time-Depth or Velocity
WEL0800 Well Logs - LWD/MWD
WEL0900 Well Logs - Core Log
WEL1000 Well Logs - Sample Description
WEL1100 Well Logs - Dipmeter
WEL1200 Well Logs - Temperature
WEL1300 Well Logs - Log Extract
WEL1400 Well Logs - Pressure Log
WEL1500 Well Logs - Gas Ratio Log
WEL1600 Well Logs - Drilling Dynamics Log
WEL1700 Well Logs - Image and Dipmeter Log
2.45 COMPLETION TYPE

The completion type is categorized by:
1. Sandface
2. Sand control
3. Tubing/packer configuration
The completion type categories are defined below:
SAND FACE CODE DEFINITION

CH Cased hole
OH Open hole
SAND CONTROL CODE DEFINITION

SS Standalone screens – including expandable
GP Gravel Pack
FP Frac Pack
CC Chemical consolidation
NA None
TUBING/PACKER
CONFIGURATION DEFINITION
CODE
Single tubing with or without packer – includes TCP
SNC
strings.
Single selective – completion of more than one zone
SNS
with one tubing string i.e. multizone single string
Dual string – completion of more than one zone with
DST
two tubing strings and a specialised dual string packer
NT Completion with no tubing.
Refer to the table below to view the list of possible values for the completion type based on the available categories identified previously:
COMPLETION TYPE CODE COMPLETION TYPE DESCRIPTION

CH-CC-DST Cased Hole, Chemical consolidation, Dual string completion
CH-CC-NT Cased Hole, Chemical consolidation, No tubing completion
CH-CC-SNC Cased Hole, Chemical consolidation, Single completion
CH-CC-SNS Cased Hole, Chemical consolidation, Single selective completion
CH-FP-DST Cased Hole, Frac Pack, Dual string completion
CH-FP-NT Cased Hole, Frac Pack, No tubing completion
CH-FP-SNC Cased Hole, Frac Pack, Single completion
CH-FP-SNS Cased Hole, Frac Pack, Single selective completion
CH-GP-DST Cased Hole, Gravel Pack, Dual string completion
CH-GP-NT Cased Hole, Gravel Pack, No tubing completion
CH-GP-SNC Cased Hole, Gravel Pack, Single completion
CH-GP-SNS Cased Hole, Gravel Pack, Single selective completion
CH-NA-DST Cased Hole, No sand control, Dual string completion
CH-NA-NT Cased Hole, No sand control, No tubing completion
65
COMPLETION TYPE CODE COMPLETION TYPE DESCRIPTION
CH-NA-SNC Cased Hole, No sand control, Single completion
CH-NA-SNS Cased Hole, No sand control, Single selective completion
CH-SS-DST Cased Hole, Standalone screens, Dual string completion
CH-SS-NT Cased Hole, Standalone screens, No tubing completion
CH-SS-SNC Cased Hole, Standalone screens, Single completion
CH-SS-SNS Cased Hole, Standalone screens, Single selective completion
OH-CC-DST Open Hole, Chemical consolidation, Dual string completion
OH-CC-NT Open Hole, Chemical consolidation, No tubing completion
OH-CC-SNC Open Hole, Chemical consolidation, Single completion
OH-CC-SNS Open Hole, Chemical consolidation, Single selective completion
OH-FP-DST Open Hole, Frac Pack, Dual string completion
OH-FP-NT Open Hole, Frac Pack, No tubing completion
OH-FP-SNC Open Hole, Frac Pack, Single completion
OH-FP-SNS Open Hole, Frac Pack, Single selective completion
OH-GP-DST Open Hole, Gravel Pack, Dual string completion
OH-GP-NT Open Hole, Gravel Pack, No tubing completion
OH-GP-SNC Open Hole, Gravel Pack, Single completion
OH-GP-SNS Open Hole, Gravel Pack, Single selective completion
OH-NA-DST Open Hole, No sand control, Dual string completion
OH-NA-NT Open Hole, No sand control, No tubing completion
OH-NA-SNC Open Hole, No sand control, Single completion
OH-NA-SNS Open Hole, No sand control, Single selective completion
OH-SS-DST Open Hole, Standalone screens, Dual string completion
OH-SS-NT Open Hole, Standalone screens, No tubing completion
OH-SS-SNC Open Hole, Standalone screens, Single completion
OH-SS-SNS Open Hole, Standalone screens, Single selective completion
3 Bulk Data
3.1 BASIC CORE ANALYSIS ACTIVITY TYPE
This describes the activities carried in the basic core analysis process. Refer to the table below to see the list of possible values:
BASIC CORE ANALYSIS ACTIVITY TYPE CODE BASIC CORE ANALYSIS ACTIVITY TYPE DESCRIPTION
The activity of measuring porosity, permeability, and fluid saturations from fractured core.
BASIC_CORE_FRACTURE_ANALYSIS This sample type has a very diverse range of pore types and directions that are the focus of
these type of investigations.
The activity of measuring porosity, permeability, and fluid saturations from a core plug that
has been extracted from a whole core. Because this sample type can be orientated
BASIC_CORE_PLUG_ANALYSIS
according to sedimentary features or along an invasion profile in the core, specific questions
about directional aspects of porosity and permeability can be evaluated.
The activity of measuring porosity, permeability, and fluid saturations from a whole core
BASIC_FULL_DIA_CORE_ANALYSIS segment. Allows a more representative profile for porosity and permeability analysis in
heterogeneous rock.
The activity of measuring porosity, permeability, and fluid saturations from a core that has
BASIC_FULL_DIA_PRES_RETAIN_CORE_ANALYSIS preserved the in-situ reservoir pressures by transportation to the laboratory in a special core
barrel. The main objective of this core type is to preserve more accurate fluid saturations.
The activity of measuring porosity, permeability, and fluid saturations from a core that has
captured reservoir fluids in a sponge sleeve during reduction of reservoir pressure
BASIC_OIL_WET_SPONGE_CORE_ANALYSIS
conditions. The main objective of this core type is to maintain more accurate fluid
saturations.
The activity of measuring porosity, permeability, and fluid saturations from a sidewall core.
The main objective of this core type is to inexpensively obtain a rock sample, however
BASIC_SIDEWALL_CORE_ANALYSIS
reservoir conditions are not preserved due to the destructive effects related to sample
extraction.
3.2 BULK VOLUME ANALYSIS METHOD

The name of the analysis method utilized to determine the bulk density values. Refer to the table below to see the list of possible values:
BULK VOLUME ANALYSIS METHOD CODE BULK VOLUME ANALYSIS METHOD DESCRIPTION
A core plug is immersed in mercury and the volume of mercury displaced by the sample is
ARCHIMEDES_MERCURY_IMMERSION
determined gravimetrically (Archimedes principle).
ARCHIMEDES_WITH_FLUIDS_NOT_MERCURY A body placed in a liquid is buoyed up by a force equal to the weight of the displaced liquid.
Direct measurement of the outside dimentions of a regularly shaped sample is made using a set of
CALIPER
calipers.
Direct measurement of the outside dimentions of a regularly shaped sample is made using a set of
CALIPER MERCURY DISPLACEMENT
calipers.
66
BULK VOLUME ANALYSIS METHOD CODE BULK VOLUME ANALYSIS METHOD DESCRIPTION
Bulk volume can be calculated as the sum of the two other volume components, grain volume plus
GV_+_PV
pore voulme.
Bulk volume is measured by mercury displacement using a volumetric pump and a calibrated
MERCURY_DISPLACEMENT sample chamber. The volume is measured with a first as an empty chamber and then with a
sample. This is a common part of routine sidewall core analysis.
3.3 CEMENTING MATERIAL TYPE

Reference value describing the type of material used during the cementing operation. Refer to the table below to see the list of possible values:
CEMENTING MATERIAL TYPE CODE CEMENTING MATERIAL TYPE DESCRIPTION

CONDENSATE Condensate
DRILLERS DRILLERS
GAS Generic Gas or Vapor phase
LOGGERS LOGGERS
OIL Generic Oil
RESERVOIR_FLUID Ideal materials in reservoirs
WATER Water
3.4 CHECKSHOT TIME UNIT

This refers to the time units of measurement for checkshot surveys. Refer to the table below to see the list of possible values:
CHECKSHOT TIME UNIT CODE CHECKSHOT TIME UNIT NAME

MS MILLISECONDS
SC SECONDS
3.5 CORE ACQUISITION DEPTH TYPE

This value specifies whether the depth measurements are in terms of logger's depth or driller's depth. Refer to the table below to see the list of possible values:
CORE ACQUISITION DEPTH TYPE CODE CORE ACQUISITION DEPTH TYPE DESCRIPTION
DRILLERS DRILLERS
LOGGERS LOGGERS
3.6 CORE ACQUISITION EQUIPMENT

The name of the piece of analysis equipment utilized during the core acquisition. Refer to the table below to see the list of possible values:
CORE ACQUISITION EQUIPMENT CODE CORE ACQUISITION EQUIPMENT DESCRIPTION

ALUMINUM_INNER_BARREL Aluminum core acquisition equipment used for high temerature, self-contained preservation.
FIBERGLASS_INNER_BARREL Fiberglass core acquisition equipment used for self-contained preservation.
STEEL_INNER_BARREL Steel core acquisition equipment used for high temerature application.
3.7 CORE ACTIVITY TYPE

This describes the activities carried in the coring process. Refer to the table below to see the list of possible values:
CORE ACTIVITY TYPE CODE CORE ACTIVITY TYPE DESCRIPTION

CUA Cuttings Aquisition
FHC Full Hole Core Acquisition
OUA Outcrop Acquisition
OUD Outcrop Description
SWC Sidewall Core Acquisition
3.8 CORE ANALYSIS FLUID TYPE

The name of the type of fluid used during core analysis. Refer to the table below to see the list of possible values:
CORE ANALYSIS FLUID TYPE CODE CORE ANALYSIS FLUID TYPE NAME
ALUMINUM_INNER_BARREL Aluminum core acquisition equipment used for high temerature, self-contained preservation.
FIBERGLASS_INNER_BARREL Fiberglass core acquisition equipment used for self-contained preservation.
STEEL_INNER_BARREL Steel core acquisition equipment used for high temerature application.
3.9 CORE BARREL TYPE

A value that represents the type of core barrel used to drill the core. Refer to the table below to see the list of possible values:
67
CORE BARREL TYPE CODE CORE BARREL TYPE DESCRIPTION
ALUMINUN Aluminum core acquisition equipment used for high temerature, self-contained preservation.
FIBERGLASS Fiberglass core acquisition equipment used for self-contained preservation.
NONE None equipment
PVC PVC equipment
3.10 CORE MEASUREMENT ADJUSTMENT TECHNIQUE

The measurement adjustment technique used to adjust the rock sample. Refer to the table below to see the list of possible values:
CORE MEASUREMENT ADJUSTMENT TECHNIQUE CODE CORE MEASUREMENT ADJUSTMENT TECHNIQUE DESCRIPTION
EMPIRICAL Correction applied based on observation or experience.
MEASURED Correction applied based on a measured, experimentally reproducible, value.
NO_CORRECTION No correction to the measured property was applied.
3.11 CORE PRESERVATION METHOD

The name of the method utilized to preserve the core. A preservation method is used to preserve a rock sample for transportation or storage and to prevent
sample deterioration or change in initial rock properties prior to analysis. Refer to the table below to see the list of possible values:
CORE PRESERVATION METHOD CODE CORE PRESERVATION METHOD DESCRIPTION

CORE_INNER_BARREL Core inner barrel
CORE_WRAP Core wrap
DRY Dry
EPOXY Epoxy
FROZEN Frozen
PLASTIC_IMPREGNATED Plastic Impregnated
PLASTIC_LAMINATE Plastic laminate
REFRIGERATE Refrigerate
WAX_DIP Wax dip
WET Wet
3.12 CUTTINGS PRESERVATION TYPE

This represents the preservation method for the cuttings sample at the well site. Refer to the table below to see the list of possible values:
CUTTINGS PRESERVATION TYPE CODE CUTTINGS PRESERVATION TYPE DESCRIPTION

WASHED AND DRY Sample is washed and dried immediately at the well site
WASHED WET Sample is washed and kept wet
WET Sample is kept unwashed
3.13 DIRECTIONAL SURVEY CALCULATION METHOD

The method used to process the raw survey data. Refer to the table below to see the list of possible values:
DIRECTIONAL SURVEY CALCULATION METHOD CODE DIRECTIONAL SURVEY CALCULATION METHOD DESCRIPTION
ANGA Angle Averaging
BALT Balanced Tangential
MINC Minimum Curvature
RADC Radius of Curvature
TANG Tangential
3.14 DIRECTIONAL SURVEY MODE

The survey mode refers to the number of desired survey points. The measured depth in the wellbore defines the points. Refer to the table below to see the list
of possible values:
DIRECTIONAL SURVEY MODE CODE DIRECTIONAL SURVEY MODE DESCRIPTION

MULTI SHOT MULTI SHOT
SINGLE SHOT SINGLE SHOT
3.15 DIRECTIONAL SURVEY NORTH REFERENCE

All directional survey measurements are referenced to a north reference. Refer to the table below to see the list of possible values:
DIRECTIONAL SURVEY NORTH REFERENCE CODE DIRECTIONAL SURVEY NORTH REFERENCE DESCRIPTION
G GRID NORTH
M MAGNETIC NORTH
T TRUE NORTH
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3.16 DIRECTIONAL SURVEY POINT TYPE
This refers to the classification of directional survey points according to their nature and their position in the run. Refer to the table below to see the list of
possible values:
DIRECTIONAL SURVEY POINT TYPE CODE DIRECTIONAL SURVEY POINT TYPE DESCRIPTION
CON CONTINUOUS
ES END OF SURVEY
INT INTERMEDIATE
IPL INTERPOLATED
TD TOTAL DEPTH
3.17 DIRECTIONAL SURVEY TOOL TYPE

This refers to the type of tool used to take the directional survey. Refer to the table below to see the list of possible values:
DIRECTIONAL SURVEY TOOL TYPE CODE DIRECTIONAL SURVEY TOOL TYPE DESCRIPTION
INERTIAL INERTIAL
MAGNETIC MAGNETIC
3.18 DIRECTIONAL SURVEY TYPE

Directional surveys record data, either raw or processed, pertaining to the accurate positioning of the hole direction and well path. Refer to the table below to
see the list of possible values:
DIRECTIONAL SURVEY TYPE CODE DIRECTIONAL SURVEY TYPE DESCRIPTION

PROC PROCESSED
RAW RAW
3.19 DISPLACEMENT MATERIAL TYPE

In a cementing operation, materials that flow in or out of a well hole are referred to as displacement materials. Refer to the table below to view the list of
possible values:
DISPLACEMENT MATERIAL TYPE CODE DISPLACEMENT MATERIAL TYPE DESCRIPTION

C CEMENT
M MUD
W WATER
3.20 DOWNHOLE FACILITY

A value describing the type of facility installed. Refer to the table below to see the list of possible values:
DOWNHOLE FACILITY
DOWNHOLE FACILITY DESCRIPTION
CODE
CASING Casing
CASING_STRING Casing production string
The casing string that is usually put into the well first, particularly on land wells, to prevent the sides of the hole from
CONDUCTOR
caving into the wellbore.
HANGER Hanger
LINER Casing liner
PACKER Isolation packer
PLUG Plug
PRODUCTION_LINER Production Liner
PRODUCTION_STRING General production string
TUBING Tubing
3.21 FAUNA TYPE

This refers to the name of microfossil fauna type observed in a sample. A microfossil fauna type defines a fossil group observed in rock samples. Refer to the
table below to see the list of possible values:
FAUNA TYPE CODE FAUNA TYPE DESCRIPTION

ACRITARCHS Acritarchs
ALGAE Algae
CONODONTS Conodonts
DIATOMS Diatoms
DINOFLAGELLATES Dinoflagellates
FORAMINIFERA Foraminifera
NANNOPLANKTON Nannoplankton
69
3.22 FLUORESCENCE INTENSITY
The color of the hydrocarbon fluorescence observed on a sample immersed in solvent. Refer to the table below to see the list of possible values:
FLUORESCENCE INTENSITY CODE FLUORESCENCE INTENSITY NAME

BRIGHT Bright or good
DULL Dull or fair
NONE None
PALE Pale or weak
3.23 GRAIN VOLUME ANALYSIS METHOD

The name of the analysis method utilized to determine porosity values. Refer to the table below to see the list of possible values:
GRAIN VOLUME ANALYSIS METHOD CODE GRAIN VOLUME ANALYSIS METHOD DESCRIPTION
Gas is admitted into a reference cell of known volume (V,.) at a pre-determined reference pressure
(100 to 200 psig). The refer-ence cell gas is then vented into a connected chamber of known
BOYLES_LAW_DOUBLE_CELL
volume containing a core sample. This results in a lower equilibrium pressure, from which GV is
calculated.
Grain volume or Pore Volume can be calculated as the diference of the two other volume
BV_-_GV
components, bulk volume minus pore voulme.
A weighed portion of a grain sample is placed into a Boyle's Law porosimeter to determine the
DISAGGREGATED_SAMPLE_GRAIN_DENSITY grain volume. The grain volume of the total sample is calculated using the ratio of the dry weight of
the consolidated sample to the dry weight of the disaggregated sample placed in the porosimeter.
3.24 LITHOLOGY TYPE

This refers to the predominant lithology of the sample. Refer to the table below to see the list of possible values:
LITHOLOGY TYPE CODE LITHOLOGY TYPE NAME

LIMESTONE Limestone
SANDSTONE Sandstone
SHALE Shale
3.25 OPERATION STATUS

A value that identifies whether drilling and workover operations are planned or actual. Refer to the table below to see the list of possible values:
OPERATION STATUS CODE OPERATION STATUS NAME

ACTUAL ACTUAL
PLANNED PLANNED
3.26 OPERATION TYPE

This identifies if the data pertains to a drilling or workover operation. Refer to the table below to see the list of possible values:
OPERATION TYPE CODE OPERATION TYPE DESCRIPTION

DRILLING A drilling oil field operation activity
WORKOVER A workover oil field operation activity
3.27 OUTCROP TYPE

An outcrop sample type describes a category of outcrop sample. Refer to the table below to see the list of possible values:
OUTCROP TYPE CODE OUTCROP TYPE DESCRIPTION

AXIAL Axial
FOSSIL An outcrop sample notable for containing paleontology indicators.
HAND_SAMPLE A small irregularly shaped outcrop sample collected by hand.
NO ORIENTATION No orientation
OUTCROP_PLUG_SAMPLE A regularly shaped plug outcrop sample collected by small drill.
PARALLEL TO BEDDING Parallel to bedding
PERPENDICULAR TO BENDING Perpendicular to bending
RADIAL Radial
SOIL_SAMPLE A loose, possibly weathered, unconsolidated sample aggregate.
TRANSVERSE Transverse
VERTICAL Vertical
3.28 PERMEABILITY ANALYSIS EQUIPMENT

The name of the piece of analysis equipment utilized to determine the values for permeability. Refer to the table below to see the list of possible values:
70
PERMEABILITY ANALYSIS EQUIPMENT CODE PERMEABILITY ANALYSIS EQUIPMENT NAME
FULL-DIAMETER_RADIAL_FLOW_PERMEAMETER Full Diameter Radial Flow Permeameter
HIGH_PRESSURE_AXIAL_FLOW_PERMEAMETER High Pressure Axial Flow Permeameter
PROBE_PERMEAMETER Probe Permeameter
3.29 PERMEABILITY ANALYSIS METHOD

The name of the analysis method utilized to determine permeability values. Refer to the table below to see the list of possible values:
PERMEABILITY ANALYSIS
PERMEABILITY ANALYSIS METHOD DESCRIPTION
METHOD CODE
EMPIRICAL Sample property based on comparison to an observation or experience.
NOT_MEASURED Sample property was not measured.
OTHER Sample was analysized by other methods.
A flow test when the end of a small-diameter tube (or "probe") is sealed against the surface of a slabbed or
PROBE
unslabbed whole-core sample.
STEADY_STATE A flow test in which the upstream and downstream pressures and flow rate all become invariant with time.
A flow test in which the upstream and downstream pressures and flow rate are not allowed to equilibrate over
UNSTEADY_STATE
time.
3.30 PERMEABILITY CONFINING STRESS ANALYSIS

The type of stress application method applied to a sample during permeability analysis. Refer to the table below to see the list of possible values:
PERMEABILITY
CONFINING STRESS PERMEABILITY CONFINING STRESS ANALYSIS DESCRIPTION
ANALYSIS CODE
Biaxial stress loading conditions are a special case of triaxial stress loading. In the biaxial stress loading of a cylinder, the
BIAXIAL stress parallel to the cylinder axis is different than the stress applied around the sample's circumference. Strains can occur
parallel to both the axis and diameter of the cylinder.
Under isostatic stress loading, equal stress is applied to the sample in all directions, and sample strain can occur on all axes.
ISOSTATIC Excessive porosity reduction typically occurs when the imposed isostatic stress is equal to the vertical reservoir stress (i.e.,
the overburden stress).
3.31 PORE VOLUME ANALYSIS METHOD

The name of the analysis method utilized to determine porosity values. Refer to the table below to see the list of possible values:
PORE VOLUME ANALYSIS

PORE VOLUME ANALYSIS DESCRIPTION
CODE
Pore volume is determined in an apparatus consisting of a gas charged reference cell of known volume and initial
pressure, which is then vented into a sample's pore volume. The sample is held in a core holder which utilizes an
BOYLES_LAW_SINGLE_CELL elastorner sleeve and end plugs. These conform closely to the sample when confining pressure is exerted on their
external surfaces. The sleeve and end stems in turn exert compressive stress on the core sample. Pore volume is
therefore determined directly using Boyle's Law.
Grain volume or Pore Volume can be calculated as the diference of the two other volume components, bulk
BV_-_GV
volume minus pore voulme.
The measurement of porosity (connected pore space) by the liquid saturation method involves the gravimetric
determi-nation of pore volume by obtaining: (a) the weight of the core sample clean and dry, (b) the weight of the
LIQUID_SATURATION_METHOD
sample saturated with a liquid of known density, and (c) the weight of the satu-rated sample submerged in the
same liquid.
Pore volume is computed by measuring and summing oil, gas, and water volumes present in a freshly recovered
SUMMATION_OF_FLUIDS
core sample. Porosity is determined by dividing pore volume by bulk volume of the rock sample.
3.32 POROSITY ANALYSIS EQUIPMENT

The name of the piece of core analysis equipment primarily utilized to determine the values for porosity. Refer to the table below to see the list of possible
values:
POROSITY ANALYSIS EQUIPMENT METHOD CODE POROSITY ANALYSIS EQUIPMENT METHOD DESCRIPTION
ARCHIMEDES_MERCURY_IMMERSION_APPARATUS Archimedes Mercury Immersion Apparatus
BOYLES_LAW_POROSIMETER Boyles Law Porosimeter
MERCURY_PUMP Mercury Pump
VOLUMETRIC_MERCURY_DISPLACEMENT_PUMP Volumetric Mercury Displacement Pump
3.33 POROSITY TYPE

A value that represents the type of porosity that was visually observed in this sample. Refer to the table below to see the list of possible values:
POROSITY TYPE CODE POROSITY TYPE DESCRIPTION

INTERGRANULAR Intergranular
71
POROSITY TYPE CODE POROSITY TYPE DESCRIPTION
INTERPARTICLE Interparticle
3.34 ROCK SAMPLE ANALYSIS

This refers to the different analysis performed on rock samples. Refer to the table below to see the list of possible values:
ROCK SAMPLE
ROCK SAMPLE ANALYSIS DESCRIPTION
ANALYSIS CODE
The activity of determining the most commonly performed, basic analysis of a rock sample including porosity, permeability,
BASIC_CORE_ANALYSIS
fluid saturation and a lithologic description.
The activity of determining any rock characteristic that is not part of Basic Core Analysis (porosity, permeability, fluid
saturation). Most SCAL concerns reservoir properties or electrical properties. The reservoir properties measured include
SCAL_ANALYSIS
relative permeability, wettability and capillary pressure. Electrical properties include formation factor, resistivity index and
cation-exchange capacity.
3.35 ROCK SAMPLE TYPE

A rock sample type is a category of rock sample. Refer to the table below to see the list of possible values:
ROCK SAMPLE TYPE

ROCK SAMPLE TYPE DESCRIPTION
CODE
A rock sample obtained by drilling into the earth with a pipe conveyed hollow bit and core barrel. Full recovery of a
CORE
conventional core is typically 30 feet in length.
CUTTINGS Small rock fragments retrieved from the shale shakers in the drilling mud return system.
A sample collected and processed for the identification of the micropaleontological constituents of the rock. This generally
MICRO
includes both a biostratigraphic and an environment of deposition evaluation.
A sample collected and processed for the identification of the micropaleontological constituents of the rock. This generally
MICRO_PALEO_SLIDE
includes both a biostratigraphic and an environment of deposition evaluation.
OUTCROP_SAMPLE A sample from a body of rock exposed at the surface of the Earth.
Rock sample, typically a cylinder of diameter 1/2" - 1", obtained by extraction from an existing rock sample for the purpose of
PLUG
providing a standardized sample for analysis.
Rock sample obtained by taking a small plug from the borehole wall on a wireline conveyed gun. Normally sidewall cores are
SIDEWALL_CORE
retrieved in a hollow bullet fired into the rock, but may also be drill with a small downhole rotary mechanism.
Very thin slice of rock extracted from another rock sample for the purpose of petrographic examination with polarized light
THIN_SECTION
microscopy.
3.36 SAMPLE ORIENTATION TYPE

A rock sample orientation type describes the direction the sample was extracted with respect to the parent sample. Refer to the table below to see the list of
possible values:
SAMPLE ORIENTATION TYPE CODE SAMPLE ORIENTATION TYPE DESCRIPTION

AXIAL Sample extracted as an axial section relative to the parent sample.
NO_ORIENTATION Sample not oriented relative to the parent sample
PARALLEL_TO_BEDDING Sample extracted parallel to bedding of the parent sample.
PERPENDICULAR_TO_BEDDING Sample extracted perpendicular to bedding of the parent sample.
RADIAL Sample extracted as a radial section relative to the parent sample.
TRANSVERSE Sample extracted as a transverse section relative to the parent sample.
VERTICAL Sample extracted as a vertical section relative to the parent sample.
3.37 SAMPLE QUALITY

This describes the visually estimated quality of the core. Refer to the table below to see the list of possible values:
SAMPLE QUALITY CODE SAMPLE QUALITY DESCRIPTION

FAIR FAIR
GOOD GOOD
POOR POOR
3.38 SAMPLE SHOW COLOR

This represents the color of the sample or different component. Refer to the table below to see the list of possible values:
SAMPLE SHOW COLOR CODE SAMPLE SHOW COLOR NAME

BLACK BLACK
BLUE BLUE
BROWN BROWN
COFFEE COFFEE
GOLD GOLD
72
SAMPLE SHOW COLOR CODE SAMPLE SHOW COLOR NAME
GOLDEN YELLOW GOLDEN YELLOW
ORANGE ORANGE
PALE BLUE PALE BLUE
PALE YELLOW PALE YELLOW
STRAW YELLOW STRAW YELLOW
TEA TEA
WHITE WHITE
YELLOW YELLOW
3.39 SATURATION ANALYSIS EQUIPMENT

The name of the piece of analysis equipment utilized to determine the values of the fluid saturation. Refer to the table below to see the list of possible values:
SATURATION ANALYSIS EQUIPMENT CODE SATURATION ANALYSIS EQUIPMENT DESCRIPTION

DEAN_STARK_TUBE Dean Stark Tube
STAINLESS_STEEL_RETORT Stainless Steel Retort
3.40 SATURATION ANALYSIS METHOD

The name of the analysis method utilized to determine values for fluid saturations. Refer to the table below to see the list of possible values:
SATURATION ANALYSIS
SATURATION ANALYSIS METHOD DESCRIPTION
METHOD CODE
The name of the analysis method utilizing distillation of the water fraction and solvent extraction of the oil phase.
DISTILLATION_EXTRACTION
Often referred to as Dean Stark.
HIGH_TEMPERATURE_RETORT The name of the analysis method utilizing destructive fluid extraction with retort at high temperature.
3.41 SCAL ANALYSIS EQUIPMENT

The name of the piece of analysis equipment utilized during the SCAL Analysis. Refer to the table below to see the list of possible values:
SCAL ANALYSIS EQUIPMENT CODE SCAL ANALYSIS EQUIPMENT DESCRIPTION

HIGH_SPEED_CENTRIFUGE High Speed Centrifuge
POROUS_PLATE Porous Plate
3.42 SCAL ANALYSIS METHOD

The name of the analysis method utilized to determine sample properties during sample analysis. Refer to the table below to see the list of possible values:
SCAL ANALYSIS METHOD CODE SCAL ANALYSIS METHOD DESCRIPTION

Fluid saturated samples are mounted in special drainage or imbibition centrifuge cups and spun stepwise at
CENTRIFUGE
increasing rotational speeds.
MERCURY_INJECTION Mercury is forced under pressure into porous media in both drainage and imbibition modes.
A closed cylinder with a porous barrier (membrane) permits the wetting-phase to drain from the sample. Also
POROUS_PLATE
called restored-state cell.
Determination of the relative percentages of grains, passing through or retained on a sequence of screens of
SIEVE_ANALYSIS
decreasing mesh size. Analysis may be by wet or dry methods.
A flow test utilizing three separate fluid phases in which the upstream and downstream pressures and flow
STEADY_STATE_THREE_PHASE
rate all become invariant with time.
A flow test utilizing two separate fluid phases in which the upstream and downstream pressures and flow rate
STEADY_STATE_TWO_PHASE
all become invariant with time.
A flow test utilizing three separate fluid phases in which the upstream and downstream pressures and flow
UNSTEADY_STATE_THREE_PHASE
rate are not allowed to equilibrate over time.
A flow test utilizing two separate fluid phases in which the upstream and downstream pressures and flow rate
UNSTEADY_STATE_TWO_PHASE
are not allowed to equilibrate over time.
3.43 SCAL PROPERTY

The name of the analysis method utilized to determine sample properties during sample analysis. Refer to the table below to see the list of possible values:
SCAL PROPERTY CODE SCAL PROPERTY DESCRIPTION

The percentage of the porosity volume that is saturated with brine, the experimental wetting phase solution
BRINE_SATURATION
in capillary pressure analysis.
The difference in pressure existing between two phases or fluids, measured at points of the interconnected
CAPILLARY_PRESSURE
phases.
CATION_EXCHANGE_CAPACITY Cation Exchange Capacity from Core
CEMENTATION_EXPONENT Cementation Factor (Archie exponent m) from Core
CEMENTATION_INTERCEPT Cementation Intercept from Core
CRITICAL_GAS_SATURATION The value of gas saturation at which gas will begin to flow, as gas saturation is increased.
73
SCAL PROPERTY CODE SCAL PROPERTY DESCRIPTION
CRITICAL_OIL_SATURATION The value of oil saturation at which oil will begin to flow, as oil saturation is increased.
FORMATION_RESISTIVITY Formation Resistivity Factor from Core
GAMMA_RAY Gamma Ray from Core
GRAIN_SIZE Grain Size from Core
The non-movable portion of the water saturation at laboratory conditions. The asymptote of the air-brine
IRREDUCIBLE_WATER_SATURATION
capillary pressure curve.
Core J Function Indicator, computed as sqrt(K/Phi); used to identify cores which may have similar capillary
J FUNCTION INDICATOR
pressure curves.
RESIDUAL_GAS_SATURATION The fraction or percentage of gas remaining following production from the reservoir.
RESIDUAL_OIL_SATURATION The fraction or percentage of oil remaining following the liberation of gases from the reservoir.
The fraction or percentage of water remaining at maximum hydrocarbon saturation, as measured in core
RESIDUAL_WATER_SATURATION analysis. It differs from Irreducible_Water_Saturation because of filtrate invasion and gas expansion from the
core being brought to the surface.
SATURATION EXPONENT Saturation Exponent from Core
VOLUME_FRACTION Percentage of Silt and Clay from Sidewall Core
Angle between a fluid droplet and a solid surface at the point of contact; the lower the angle (measured
WETTABILITY_CONTACT_ANGLE
inside the droplet), the greater the adhesion and thus the greater the wettability of the solid to that fluid.
WETTABILITY_INDEX Wettability Index from Core
3.44 SHOW DISTRIBUTION

This describes the geometry of a show. Refer to the table below to see the list of possible values:
SHOW DISTRIBUTION CODE SHOW DISTRIBUTION DESCRIPTION

EVEN Show distribution is even.
NONE No show observed.
SOLID Show distribution is solid.
3.45 SHOW QUALITY

This describes the value or worth of a show. Refer to the table below to see the list of possible values:
SHOW QUALITY CODE SHOW QUALITY DESCRIPTION

FAIR Fair quality show based on a summation of show indicators
GOOD Good quality show based on a summation of show indicators
NONE No quality indiation of hydrocarbons present
WEAK Weak quality show based on a summation of show indicators
3.46 SHOW TYPE

This describes the expected source of hydrocarbons observed in a show. Refer to the table below to see the list of possible values:
SHOW TYPE CODE SHOW TYPE DESCRIPTION

GAS Show indicates the presence of gas.
GAS_OIL Show indicates the presence of both gas and oil.
NONE Show indicates the absence of oil.
OIL Show indicates the presence of oil.
3.47 SLURRY TYPE

Reference value describing the type of material used, measured, or analyzed. Refer to the table below to see the list of possible values:
SLURRY TYPE CODE SLURRY TYPE DESCRIPTION

LS Lead Slurry
TS Tail Slurry
3.48 VOLUME UNIT OF MEASURE

This refers to the standard units of measure for volume. Refer to the table below to see the list of possible values:
VOLUME UNIT OF MEASURE CODE VOLUME UNIT OF MEASURE DESCRIPTION

1000 m3 thousand cubic meters
ACRE.FT acre foot
BBL barrel
FT3 cubic foot
L liter
MCF thousand cubic feet
MMCF million cubic feet
74
VOLUME UNIT OF MEASURE CODE VOLUME UNIT OF MEASURE DESCRIPTION
MMSCF million standard cubic feet
MSCF thousand standard cubic feet
SCF standard cubic foot
darcy.m darcy meter
galUK gallon (U.K.)
in3 cubic inch
m3 cubic meter
mD.ft millidarcy-foot
mD.m millidarcy-meter
mL milliliter
75

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Ministry of Energy

and Energy Industries

Energy Data Hub Naming Conventions & Standard Codes

July 12, 2016

2.39 WELL STATUS 61

Streamlining the data submission process

This document is divided into two (2) main sections:

Company Block Station Code Block Station Name

2.2 CASING SIZE / GRADE

2.4 CEMENT CLASS

CLUSTER CODE CLUSTER NAME

2.7 COMPLETION FLUID

COMPLETION FLUID CODE COMPLETION FLUID NAME

2.8 CONTRACT TYPE

CONTRACT TYPE CODE CONTRACT TYPE NAME

CONTRACTOR CODE CONTRACTOR NAME

2.10 DATA TYPE

DATA TYPE ID DATA TYPE NAME

2.11 DRILLING PROGRAM NUMBER

2.12 DRILLING STATUS

DRILLING STATUS CODE DRILLING STATUS DESCRIPTION

2.13 ELEVATION REFERENCE

ELEVATION REFERENCE CODE ELEVATION REFERENCE NAME

Refer to the tablebelow to see the list of possible values:

FIELD CODE FIELD NAME

2.15 FLUID TYPE

FLUID TYPE CODE FLUID TYPE NAME

2.16 GATHERING STATION

GATHERING STATION CODE GATHERING STATION REFERENCE NAME

2.17 GUN TYPE

GUN TYPE CODE GUN TYPE NAME

2.18 HEIGHT DETERMINATION METHOD

HEIGHT DETERMINATION METHOD CODE HEIGHT DETERMINATION METHOD NAME

2.19 INJECTION PROJECT

INJECTION PROJECT TYPE INJECTION PROJECT NAME

2.20 LEASE NUMBER

2.21 LESSEE / OWNER

LESSEE/OWNER CODE LESSEE/OWNER NAME LESSEE/OWNER DESCRIPTION

UTL Unocal Trinidad Limitted Unocal Trinidad Limited

2.22 MUD TYPE

MUD TYPE CODE MUD TYPE NAME

OPERATOR CODE OPERATOR NAME

2.24 PACKER, PLUG TYPE

TYPE CODE TYPE NAME

PLATFORM CODE PLATFORM NAME

PRODUCTION METHOD CODE PRODUCTION METHOD NAME

2.27 PRODUCTION STATUS

PRODUCTION STATUS CODE PRODUCTION STATUS DETAIL

PROJECTION CODE PROJECTION NAME

2.29 RIG TYPE

RIG TYPE CODE RIG TYPE NAME

2.30 ROYALTY CODE

ROYALTY CODE ROYALTY DESCRIPTION

2.31 SALES TO OTHER COMPANIES (PROD3)

2.32 SURFACE RIGHT

2.33 SURVEY COMPANY

SURVEY COMPANY CODE SURVEY COMPANY NAME

FUGRO Fugro N.V.