Drilling Rig Selection Guidelines Only PDF
Drilling Rig Selection Guidelines Only PDF
Drilling Rig Selection Guidelines Only PDF
GUIDELINES
DRILLING RIGS-
RIGS- General
This fact determine drilling rig type selection. If rig is planed to work depth range up to 3600m then is prefferable to
select mobile, telescopic drilling rig rated up to 1000 HP.
Large surface of well site Mud pump SPM restricted due drive diesel engine. Required 3
More personnel –more experienced and specialist liner size
Havy drilling and handling equipment Restricted height bellow rotary table for BOP stack
More investment for spare part stock Less surface of drilling floor – safety
DP length restricted on bottom length limit.
DRILLING RIGS-
RIGS- General
150 (110) 60
200 (147) 75
250 (184) 80
.
DRAWWORKS
DRAWWORKS
Cat head:
Cat head is mechanical device for Making-
Making-up or Breaking-
Breaking-out thread connection during connecting or
triping. Pulling force created by cat head in the combination of
of length of roetary tongs lever, should be
enought for creating necessary torque when connecting. Whenactivate
Whenactivate at driler’
driler’s panel cathead
control switch, friction plates at cat head matches and transfer force to pulling line.
Make-
Make-up cat head is located at LH side of drawworks, break-
break-out cat head on RH side.
Make-
Make-up & Break-
Break-out hydraulic cylinders:
With mobile drilling rig catheads are problem when moving and during
during operating. Mobile rig is too
wide for transport and to avoid disassembling and during rigging up again instaling cat head today in
yse are hydraulic cylinder with pulling force 10t.
HYDRAULIC BRAKE
Each diesel mechanic drilling and workover rig is equiped with hydrailic
hydrailic brake. Most popular Model are
produced by company PARMAC.
At drilling rigs when triping heavy drilling strings weightening over 20 t it is very dificult that driller
using band brake safely hold that load. Another reason is to avoid
avoid overheating brake pads.
They are producting in the sizes to meet every need for drilling to depths well up to 10000m and for
allsize of workover rigs. In the next table is given range of sizes
sizes and maximum recommended
operating speeds.
DRAWWORKS
111-
111-300 25 2300 300
112-
112-500 25 2300 500
15DR 25 2300 1600
121 25 2300 800
122 25 2300 1600
201 25 1550 1500
22SR 25 1550 2500
202 25 1550 3000
22DR 25 1550 4000
V-80 15 1550 5000
SSR28 15 900 5500
262 15 850 6000
341 15 600 6000
341A 15 600 6000
342 15 600 7500
342A 15 600 7500
46SR 15 500 7000
60SR 15 375 8000
451 15 500 8500
Bigger mobile drilling rigs and most convential drilling rigs produced
produced today ate Diesel electric rig.
Drawworks for this rigs have electric drive ba AC or DC motore,
motore, usualy two. And instead hydraulic
brake have Electromagnetic brake (Eddy current brake).
Mobile rigs
Smaler drum size and older construction have brake
flanges designed to accomodate band brake. High
capacity mobile righ today are designed and to
accomodate disc brake.
Mobile drilling rigs, due small dimension, usually are
diesel mechanic. Only higher rated capacity rigs can
be diesel electric.
Racking board to have three position.
Raising mast upper section can be by wire rope
(simple maintenance and low cost) or by hydraulic
cylinder.
Upper section locking device by “dogs”
dogs” (4 pcs) or by
two pins.
Usually have one stand pipe.
Substructure to be telescopic.
To have provision for rat and mouse hole.
Racking boadr equiped with air operated winch 1 ton
to assist derricman.
Casing stabing board with air winch
DRILLING RIG – MAST TELESCOPIC
- Telescopic mast installed on the mobile rigs are critical with mast height.
- Declared mast height assume height from ground lavel to water tabletable
(Bottom of crown block).
- Usable height is total mast height minus substructure height.
- Example:
Example:
For rig capacity up to 200 ton crown block and traveling block have have 5 sheaves each so operates with
10 lines. If drilling shallow wells, for fater tripping it is posible
posible to operate using 4 or 3 sheaves in the
system. In the such case running drilling line over sheaves must be performed according API RP 9B
Application, care and use of wire rope for Oilfield Service.
DRILLING RIG – MAST – Crown block
DRILLING RIG – MAST – Traveling block
.
DRILLING RIG SELECTION – ROTARY TABLE
For well dipeer than 3000m (or drill string havier than 115 ton),
ton), it should be allweys used Pin drive kelly bushing, pin
drive master bushing and SDU rotary slips.
.
DRILLING RIG SELECTION – POWER EQUIPMENT
- 60-
60-110 Pcs. AC motors rated from 0,25 to 15 Kw that simultaniously works at average 90 kW
- 4 Pcs AC motors rated 75 Kw each (2 Mud hopper, one desilter and one desander 150 kW
- 4 Pcs AC motors rated 35 kW each (two mud pumps, 2 compressor)
35 kW
- Heating / Cooling 7 Pcs air conditioner at 3 kW each 21 kW
- Rig lightening 10 kW
TOTAL: 306 kW
That means that best selection is 2 generators rated 320 kW Each as minimum and one auhiliary generator for
moving rated 120 kW.
Switch gear box (MCC) to be equiped with air conditioner. Plug in in connection out door one to one.
Mud agitators and shale shaker start-
start-stop switch close to consumer.
All electrical instalation EXd protected.
COMPRESSOR
- One active and one standby compresor electricaly driven by 35kW motor AC.
- One air drayer
- One air reservoir 6m3
DRILLING RIG SELECTION – MUD PUMPS
MUD PUMP
Two mud pumps 1000 HP 6 ¾” x 10” 10”each independently driven with torque converter C300-
C300-65
Two pre-
pre-charging centrifugal pumps 5x6 driven with AC motor 35-
35-45 kW
Pulsation dampener PD-PD-55 5000 psi WP
Suction dampener horizontal
Pressure relief valve 1500-
1500-5000 psi , reset, flanged
Vibration discharge hose 3 ½” 5000 psi
Discharge manifold 4”4” 5000 psi welded connections
Liner selection 2, max 3 sizes
DRILLING RIG SELECTION – BOP’
BOP’s
BOP’
BOP’s for drilling rig 200 ton should be 13 5/8”
5/8” 10000 psi rated as follows:
Annular blowout preventer 13 5/8” 5/8” 5000 psi bottom flanged
Double ram blowout preventer 13 5/8” 5/8” 10000 psi WP, flanged, with two side outlets 4”4”
10000psi flanged. Top cavity equiped with 4 ½” DP rams, bottom cavity CSO- CSO- blind rams.
Auxilliary rams 9 5 /8”
/8” one pair and 6 5/8”
5/8” or 7”
7” casing rams.
Drilling spool 13 5/8”5/8” 10000 psi with two side outlets 4”
4” 10000psi flanged.
Addapter spool 13 5/8” 5/8” 5000 psi x 13 5/8”
5/8” 10000 psi, studded.
Addapter spool 13 5/8” 5/8” 3000 psi x 13 5/8”
5/8” 10000 psi, studded.
Addapter spool 11” 11” 5000 psi x 13 5/8”
5/8” 10000 psi, studded.
Choke line 4 1/16”
1/16” 10K welded connection with one HRC 4 1/18” 1/18” 10K and one gate valve 4
1/16”
1/16” 10K flanged. Instead steel pipe 4 1/16”
1/16”10K it can be flexibile hose 4 1/16”
1/16”10K.
Kill line 2 1/16”
1/16” 10K welded connection with two gate valve 2 1/16”
1/16”10K flanged and one check
valve 2 1/16”
1/16” 10K.
Kill manifold (for Caspian region) with 3 gate valve 2 1/16”
1/16” 10K flanged.
Accumulator unit 160 gal minimum with appropirate triplex plunger pump driven by AC motor
15 kW, two air operated pumps , manifold with valves for closing anular, pipe rams, CSO rams,
HRC valve; three pressure transducer for Annu8lar pressure, low oil level and manifold pressure,
remote control panel with grafical illustration gauges for annular
annular pressure, and air system
pressure, air control hose, hypraulic pipe racks 1”1” connecting accumulator unit with BOP’
BOP’s.
Cup tester for casing 9 5/8”5/8” 36-
36-42# and 43,5-
43,5-53,5#; 7”
7” 29-
29-38#, 13 3/8”
3/8” 72#.
BOP testing unit air operated 15000 psi with recorder
BOP Test stand
DRILLING RIG SELECTION – Cup tester
2 3/8”
3/8”IF 270.000 4 ½” All 9.5
5” All 12.4
5 ½” All 16.0
3 ½”IF
½”IF 500.000 6 5/8”
5/8” All 14,8
7” 17-
17-26 23,5
7” 29-
29-38 20,4
4 ½”IF
½”IF 800.000 9 5/8”
5/8” 32,2-
32,2-40 44,1
9 5/8”
5/8” 43,5-
43,5-53,5 42,4
13 3/9”
3/9” 48-
48-61 109,5
13 3/8”
3/8” 61-
61-72 103,3
20”
20” 78,5-
78,5-122,3 300,0
DRILLING RIG SELECTION – BOP accessories
MUD SYSTEM
For 200 ton rig, based on well construction 13 3/8”
3/8”-200m; 9 5/8”
5/8”-1500m and 8 ½” 3900m
appropirate mud system total volume is 150m3 consisting of:
- Mud tank suction 40m3 equiped with 2 mud agitators 15HP each, mud guns
- Mud mixing tank 40m3 equiped with 2 mud agitators 15 HP each, mud guns
- Mud tank –reserve mud 40m3 equiped with with 2 mud agitators 15 HP each, mud guns
- Mud threatment tank 40m3 with two chembers-
chembers- suction and discharge compartment, 2 mud
agitators 15 HP each, mud guns. On top of tank installed desander,
desander, degaser and mud cleaner
(optionaly – centrifuge for unweighted mud for use in Caspian region).
- Shaker tank 20 + 12m3 with sand trap and two linear motion shakers.
- Separator mud/gas for 20 Bar WP 600 dm3.
DRILLING RIG SELECTION – MUD SYSTEM
CENTRIFUGE
SEPARATOR
MUD-GAS
DRILLING RIG SELECTION – HANDLING EQUIPMENT
ROTARY TONGS
Reliable rotary tongs produce BJ, Folley, Blohm & Vos, Web Wilson
Wilson and all parts are interchangable.
SDX-
SDX-200 200.000 8” - 16”
16”
SDD 60.000 16”
16” - 17”
17”
75.000 12”
12” – 15”
15”
100.000 4” – 12”
12”
DB 40.000 11 ¾” – 17”
17”
65.000 3 ½” – 11 ¼”
B 30.000 13 3/8”
3/8”
40.000 9” – 11 ¼”
55.000 3 ½” – 9”
ELEVATOR LINKS
Nominal size of liks is measured on the body. They should be weldless.
weldless. Usualy rig is equiped with
two pairs of links. One pair is shorter and is intendent for normal drilling operations. Another pair
is is longer (and can be and larher size) for use in the special
special situations (when cementing casing
string it is neccesary more space between hook and elevator to accomodate cementing head or
during DST to accomodate testing head).
As stated previously for drill string loads up to 115 tons can bebe used drill pipe slips Type DU having
length of gripping with insets of 12”
12”. For heavier strings it must be used SDU (or RD) type slips
gripping 16”
16” length in the combination with pin drive system only.
DEN-CON
DRILLING RIG SELECTION – HANDLING EQUIPMENT
KELLY SPINNER
RIG INSTRUMENTATION
Rig instrumentation can operate peumatically-
peumatically-hydraulically or electrically.
Pneumatic-
Pneumatic- hydrasulic systems are cheap, long life, simple for installing, adjusting,
maintenance and needs small amount of spares.
Electrical systems are expensive, installing, adjusting and maintenace must be performed
performed
by specialist, needs large quantities of expesive spares.
Instrument BOX
DRILLING RIG SELECTION – INSTRUMENTATION-
INSTRUMENTATION-WEIGHT INDICATOR
WEIGHT INDICATOR
SYSTEM AWE6:
DRILLING RIG SELECTION – INSTRUMENTATION
Mobile drilling rigs , small and medium deepth rating, ussualy uses weight indicator Type D (for
drilling line size 1”
1”; 1 1/8”
1/8” and 1 ¼”).
¼”).
Each weight indicator is equiped with appropirate dials – from one side 6 lines , reverse side 8 lines
and bellow another dial with 8 lines and reverse side 12 lines, or bigger rigs have 8 and 10 lines –
another dial for 12 and 14 lines.
DRILLING RIG SELECTION – INSTRUMENTATION
Next figure shows one weight indicator Type “D” adjusted for 8 lines and second figure shows
changing dials.
DRILLING RIG SELECTION – INSTRUMENTATION
Dead line anchor can be installed on the mast leg, drilling floor (drawworks level)
level) or bellow drilling
floor on the substructure. Basic types are:
National anchor: Type D, E and EB
Hercules anchor: 119; 120, 121; 129; 130T; 150T
EXAMPLE: A Type “D” weight indicator with 8 lines, with senzor and anchor 10 ft below
below the gauge,
the indicator will read 1600 lb low at all readings.
DRILLING RIG SELECTION – INSTRUMENTATION
Hydraulic system is calibrated if gap between plates on the E80 or compession cells is 0,62”
0,62” (16mm).
When, with hanged traveling block and kelly gap meassurement is 13mm it must be re- re-charged.
DRILLING RIG SELECTION – INSTRUMENTATION
- Check fluid load frequently and always before taking a heavy pull.pull. The gap “A” in the
sensor should be 5/8”
5/8” ( 16mm) with block empty.
- If gap is greater then this, it is possible that the system is overloaded
overloaded to an extent
that the pointer will reading a preload figure. As soon as you apply
apply enought weight to
overcome this preload the instrument will then read accuratelly.
- When gap ”A” is LESS than 5/8”
5/8” (16mm) as it is possible to apply enought weight to the hook
that stroke of the sensor is used up and it bottoms out, metal toto metal. In this case the
instrument will read correctly until it bottoms out and the pointer
pointer can then go no further.
- Besides having the proper gap “A”, the system should be free of air, as air will compress under
load causing the gap to reduce prematurely and the possibility of of bottoming out may occur.
- calibration is 816 psi for 3600 – FOR
The gauge calibration should be checked periodically. This calibration
INSTRUMENTS “D “ and “E”.
DRILLING RIG SELECTION – INSTRUMENTATION
Shunt
Power
DRILLING RIG SELECTION – INSTRUMENTATION
DRILLING RIG SELECTION – INSTRUMENTATION
TRU-
TRU-TORQUE ROTARY RORQUE SYSTEM Model FA- FA-18
Is another hydraulicaly operated system for measuring rotary table
table torque. Consists of two
compression sensors instaled diagonally on the two rotary sides,
sides, hydraulic hose Dial indicator gauge
and hoses to recorder.
DRILLING RIG SELECTION – INSTRUMENTATION
EXAMPLE of calculations when selecting size of senzor.
DRILLING RIG SELECTION – INSTRUMENTATION
MUD PUMP PRESSURE GAGE Model GM6A
System operates in the temperature range of -45 to + 650C.
Accuracy of the system is ± 1,0%.
System consists of Diaphragm gage protector, hydraulic hose , dampener
dampener and Gage (dial).
Diaphragm gage protector shoul always be installed vertivally (Left
(Left Figure) to anable purging
rubber cup when pumping stops.
Hudraulic system loading with hydraulic fluid W-
W-15
Disassembly Diaphragm gage protector and place bottom up.
Connect hand operated hydraulic pump. Do nor tight connecting nut.
nut.
Fill-
Fill-up pump reservoir with instrument fluid W-
W-15. During pumping minimum level should be
half of reservoir height.
Slowly operate pump while on the connecting thread leagks clear fluid (without air bubbles).
Tight connection and start pumping while monitor runner cup. When
When inside sides of cup
taches stop pumping. System is loaded with fluid under proper pressure.
pressure.
DRILLING RIG SELECTION – INSTRUMENTATION
TONG LINE PULL & TORQUE INDICATOR SYSTEM H6B
System uses when making-
making-up Drill pipe, drill collar casing and tubing joints giving “line pull”
pull” readings
in pound, kilograms or decanewtons that can be easy converted to ft- ft-lb or kg-
kg-m by multiplying the
line pull reading by the effective tong handle length.
.
DRILLING RIG SELECTION – INSTRUMENTATION
A. Rig data:
- Weight of traveling block: 4600 Kg
- Weight of links 2 ¼” x 108”
108” 276 Kg
- Weight of DP elevator GG 4 ½” 350t 324 Kg
- Weight of kelly 4 ¼” x 10,5m 788 Kg
- Weight of swivel 2100 Kg
TOTAL WEIGHT OVER ROTARY RABLE, air 8088 Kg
Drill pipes 4 ½” x 16,6lb/ft E75 NC50 180 long 2000m
Drill collar 6 ½ x 2 ½” x 143,2 Kg/m 200m length
Mud Density 1,32 Kg/dm3
B. System accuracy-
accuracy- Weight indicator “D” and deadline anchor Type Hercules 129T with 10 lines, located
18 feet below weight indicator. By using data from Catalog Martinn
Martinn Decker TW570 Page 7 Tables 4-4-1 and
4-2,
Lb/gal. 8,34 9,0 10.0 11,0 12,0 13,0 14,0 15,0 16,0 17,0 18,0 19,0 20,0
Lb/Cu.Ft. 62,4 67,3 74,8 82,3 89,8 97,2 104,7 112,2 119,7 127,2 134,6 142,1 149,6
Specif. gravity 1,00 1,08 1,20 1,32 1,44 1,56 1,68 1,80 1,92 2,04 2,16 2,28 2,40
FACTOR 0,873 0,863 0,847 0,832 0,817 0,802 0,786 0,771 0,755 0,741 0,724 0,710 0,694
CALCULATION:
Drill pipe weight in the air 2000m x 26,78 kg/m = 53560 Kg
.
DRILLING RIG SELECTION – HANDLING EQUIPMENT
.
DRILLING RIG SELECTION – HANDLING EQUIPMENT
.
DRILLING RIG SELECTION – HANDLING EQUIPMENT
.
DRILLING RIG SELECTION – HANDLING EQUIPMENT
.
DRILLING RIG SELECTION – HANDLING EQUIPMENT
.
DRILLING RIG SELECTION – HANDLING EQUIPMENT