Technical Specifications of 250 HMI Top Drive

MINI HYDRAULIC
TOP DRIVE DRILLING
SYSTEM
The Tesco 250 HMI was specifically designed for small
drilling and workover rigs to provide additional power
and top drive drilling features for those critical re-entries,
horizontal sections or multi-laterals. Simultaneous
circulation and rotation of drill string during drilling or
tripping operations, reduces time, cost and risk associated
with reaming or back reaming. The ability to drill with
stands speeds oriented directional drilling, and air, gas,
or underbalanced drilling. Pipe handling and robotic
features decrease connection time and increase rig floor
safety.

Specification Sheet Tesco 250 HMI Top Drive

ID Number 0504-00001 Manufacturers Serial Number 193

Certification N/A Present Location Dubai

Specifications
Rated Capacity 250 ton 227 tonne
Weight 8,000 lbs 3 628 kg
Length 13 ft 5 in 4.089 m
Width 33 in 838 mm
Max. Torque (2.19:1Ratio) 21,000 ft-lbs 2 847 daN.m
Max. Speed (1.64:1Ratio) 170 RPM 170 RPM
Input Power Unit 460-525 hp 343-391 kW

Features such as dual directional link tilt, mousehole connection

extend, thread compensation, forward and reverse torque limits,
drill string torsional dampening, integrated swivel, remote operated
dual ball mudsaver/safety valve, remote operated quick change
insert drill pipe elevators, etc.

A field proven portable system that can be rigged up in less than a
day, with little or no mast modification. Systems are routinely
installed for specific well sections.

An independent hydraulic power system to increase rig
performance and give workover rigs full drilling capability.

Gear ratios that can be field exchanged in a matter of hours, to
provide additional rpm for slim hole sections.

A compact package that can be easily moved, in one truckload,
from rig to rig. The entire system is available in standard 20 foot
shipping containers for fast secure commercial shipping.
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Specification Sheet Tesco 250 HMI Top Drive

The lengths of the service loop and cords will be as follows:
150' x 1-1/2" Ma in Loop Hos es - 5000ps i va l ves & uni on ends
150' x 1-1/2" Ca s e Dra i n Hos e
150' x 3/4" Auxi l ia ry Pres s ure Hos e
160' x 37C Control Cord, Panel to Top Dri ve
160' x 37C Control Cord, Panel to Power Uni t (Addi tiona l Connector a t Power Uni t wi th 10' Pi g Ta i l From Mai n Pa nel )

Service Loop Description

HOSE REEL
Capable of storing the complete Service Loop (excluding 37C control cable). The reel has a hydraulic drive for easy spooling of the
hoses. Complete with lifting lugs for ease of handling.

MAIN HYDRAULIC HOSE

The portable units incorporate 2 - 150' x 1-1/2" x 5.000 psi working pressure certified, hydraulic hoses to transfer fluid power to the Top Drive.
These hoses are light weight and have a small minimum bend radius which allows them to be easily spooled. The hydraulic hoses are flexible,
durable, and come complete with Loop Containment Chains (chains which encircle the Loop House to prevent splaying, as the Loop travels in the
mast).

AUXILIARY HYDRAULIC HOSE

3/4" x 2,250 psi working pressure, hydraulic hose to power all robotic functions on the Top Drive.

CASE DRAIN HYDRAULIC HOSE

1-1/4" x 1,625 psi working pressure, hydraulic hoses which returns auxiliary flow, as well as motor case drain to the main reservoir.

HOSE HANGING SADDLE

Tesco Designed and Manufactured Hose Hanging Saddle complete with hose clamps, cable slings, attachments and hanging brackets.

CONTROL CABLE
Top drive to Driller's Panel control cable, SOW rated, 37 wire complete with Pyle-National connectors, and small free - standing reel.

S-PIPE ASSEMBLY (S-PIPE: 4")

Complete with hammer unions (with the exception of the end unions, which are optional, and as per customer specifications), and safety slings.
This versatile assembly enables the rig kelly hose to be routed past the Top Drive.
 Page 3

Specification Sheet Tesco 250 HMI Top Drive

Torque Arrest System

STANDARD TORQUE TRACK (90')

The Tesco designed an manufactured Standard HMI Torque Track

uses a simple clamp anchoring system allowing the reactive torque
to be transferred into the lower section of the derrick and the
substructure. The track is suspended by a Tesco designed, cable
hanging assembly from the crown, and weights approximately
5,000 lbs. The track is designed to maximize versatility and
portability. The varied section lengths allows the same track
components to be arranged to fit most mast heights. This allows
the Top Drive System to be transferred from rig to rig without any
mast modifications.

TORQUE ARREST SYSTEM

This system transfers reactive drilling torque form the Top Drive,
into the Torque Track. System includes Extend Frame, Extend
Arms, Torque Bushing with Nylatron inserts, Torque Arm, Torque
Beam, Torque Beam Clamps, and all standard rig up items.
 Page 4

Specification Sheet Tesco 250 HMI Top Drive

Control System
SPEED (RANGE) SELECTION
The high or low speed range may be selected remotely from the Driller's
Control Panel, without interrupting the rotation of the string.

MODE SELECTION
When switching between Drill, or Connecting modes, a number of
controls (engine speed, Top Drive RPM, maximum torque, speed selection
etc) are automatically selected and set to pre-adjusted values.
DRILLER'S CONTROL PANEL
Rugged Stainless Steel Panel enclosure comes complete with
Top Drive Torque (pressure), RPM gauges and all required TORQUE LIMIT CONTROL (FORWARD)
switches, indicators, mounts, and connectors. The Driller's These controls allow the Top Drive Forward Quill Torque to be regulated
Control Panel is ergonomically designed for ease of operation. by the user for various tool joints or casing connections. The torque
values are manually preset particular to the drill string make-up torque
requirements, and drilling parameters. The Maximum Torque relief is
then key locked to restrict unauthorized access. Two torque settings are
QUILL RPM GAUGE
then, always in effect, and are remotely selected from the Driller's
Digital gauge indicating quill forward, and reverse RPM. An
Control Panel.
isolated output signal is also provided for input to a mud
logger, or other data acquisition systems.
TORQUE LIMIT CONTROL (REVERSE)
Allows the user to set a maximum torque in Reverse. This control allows
TORQUE PRESSURE GAUGE the Top Drive Reverse Quill Torque to be regulated for various tool joints
Net Motor pressure, in forward and reverse is read by a or casing connections. In order to prevent unscheduled string back-off,
transducer which in turn, transmits a signal to the digital the torque relief is manually preset to a value typically less than the drill
Torque Pressure Gauge mounted within the Driller's Control string make-up torque requirement. This preset Reverse Torque value is
Panel. An isolated output signal is provided for input to a mud particularly advantageous for the controlled release of stored energy in
logger, or other data acquisition systems. A backup Hydraulic the string, orienting to the left when directional drilling, and also, planned
Torque Pressure Gauge, with conversion charts is also back-off operations.
provided.

REMOTE START/STOP FOR AUXILIARY HYDRAULIC PUMP

PIPE HANDLING CONTROLS Allows the Driller to remotely stop/start the auxiliary pump from the
The Pipe Handling Controls (Extend, Tilt, Grabber, Remote Driller's position, or from the power unit main panel. An auxiliary
Actuated Mud Saver Valve, and Elevators) are "electric" over pressure indicator light mounted on the Driller's Control Panel,
"hydraulic" operated (24VDC). illuminates when the auxiliary system pressures up, and indicates that an
auxiliary function has been made.

DUAL FUNCTION REMOTE BRAKE HANDLE CONTROL

Provides brake handle control of "Elevator Close" and the EMERGENCY SHUTDOWN
"Drawworks Interlock Override". Details are as follows: The prime mover may be shut down from two locations. One emergency
shut down button is located on the Driller's Control Panel (fuel and air).
1. ELEVATOR CLOSE - For ease of tripping, the elevators may An additional shutdown is located on the prime mover (fuel only).
be closed from this conveniently located push button, as well
as from the Driller's Control Panel.
2. DRAWWORKS INTERLOCK OVERRIDE - This Air Clutch SYSTEM PROTECTION (SHUTDOWNS)
interlock locks out the drum clutch, so that the Driller is Shut downs are also incorporated in the following areas for the Top Drive
prevented from hoisting while the Grabber is engaged. A push System:
button facilitates an override of this feature. 1. Shutdown on main loop for high temperature
2. Shutdowns on reservoir for high temperature, and or low oil levels.
NOTE : One operation where this override is advantageous is 3. Shutdown on pumpdrive for high temperature
when hoisting the string, without string rotation, during
directional drilling. In addition, a warning light is positioned
above the Grabber switch on the Driller's Control Panel to CONTROL CABLE
indicate the status of the Grabber. Complete with Pyle National Multi-pin Connectors to connect between
the Driller's Control Panel and Power Unit.
MUD PUMP - MUD SAVER VALVE INTERLOCK
This Air Clutch Interlock prevents the Driller from starting the UNIT DOCUMENTAITON PACKAGE
mud pump before the Mud Saver Valve has been opened. For Includes Service, Operations and Maintenance instructions for the Tesco
SCR electric drilling rigs, written recommendations are Top Drive, Control System, and Power Unit. Also included are
available upon request, for a SCR interface related to the mud appropriate loadpath inspection and certification reports.
pump interlock.
 Page 5

Specification Sheet Tesco 250 HMI Top Drive

Prime Mover

PRIME MOVER: Caterpillar 3406B, 475 hp at 2,100 RPM Turbo Charged Diesel Engine

Complete with Engine Skid, Air Starter, Electric Air Throttle, Jack Water Heater, 8-gauge Instrumentation Package, 8 US Gallon (30
litres) Fuel Day Tank, Exhaust Spark Arrestor, Muffler, Raycor High Efficiency Fuel Filter, and Emergency Fuel and Air Shutoffs.
Accessories include: 1" x 150' Air Hose, 1" x 100' Fuel Hose, all complete with quick couplers.
 Page 6

Specification Sheet Tesco 250 HMI Top Drive

Work Shop

20' Container with on-site workshop

A fully equipped 20 Foot container tool room provides the convenience of on-site service and maintenance.
 Page 7

Specification Sheet Tesco 250 HMI Top Drive

Unit Configuration

PART NAME SERIAL NUMBER SIZE

TESCO TDT HMI 250

193 250 TON
MAX TORQUE 20,000
GEARBOX QUILL TDT-RS44421-1-10K 4 FH P X 4FH P
LOAD COLLAR TDT-GKD2517-9 200 TON
STABBING VALVE 3067-DB-FH-036 4 FH B X 4 FH B
SAVER SUB NO POSITIVE ID/STAMPED B8 4 1/2 IF P X 4 FH P
ELEVATOR LINKS N/A 150T 1 3/4" X 96"
ELEVATOR 611-21-1 150 TON
ELEVATOR 611521-2 150 TON
SWIVEL YOKE TDT-MW11048-10 200 TON
SWIVEL BAILS TDT-MW11048-10 200 TON
SWIVEL BAILS TDT-MW11048-11 200 TON
SWIVEL BODY 97017 200 TON
ADAPTOR PIN TDT-MW11048-105 200 TON
ADAPTOR PIN TDT-MW11048-97 200 TON
ADAPTOR PIN TDT-RS41862-10A 200 TON
ADAPTOR PIN TDT-RS41862-10B 200 TON
INNER SPLIT COLLAR, LEFT TDT-RS43170-14-1 200 TON
INNER SPLIT COLLAR, RIGHT TDT-RS43170-14-2 200 TON
OUTER RETAINER TDT-RS43170-14-3 200 TON
TOP PLATE TDT-RS43170-14-4 200 TON
LOWER PLATE TDT-RS43170-14-5 200 TON
GRABBER N/A RANGE FROM-3"-6 3/4"

Hydraulic/Engine Container

PART NAME SERIAL NUMBER MODEL

RINEER MOTOR 9802192 196 PC 4 PORT

LINDE PUMP 265HO10199 LINDE HPV 130 L
LINDE PUMP 265HO10199 LINDE HPV 130 L
HYDRAULIC HOSE HH9704090 1 1/2" X 75x 5000psi
HYDRAULIC HOSE HH9705006 1 1/2" X 75 x 5000psi
HYDRAULIC HOSE HH9705008 1 1/2" X 75 x 5000psi
HYDRAULIC HOSE HH9705008 1 1/2" X 75' x 5000psi
REMOTE ACUATOR 3086-TDA-054 3086 SERIES
ENGINE 6TB16887 3406 CAT
AIR COOLER MODINE 97086-56850-01 LAB-170
CONTAINER WORKSHOP /
N/A 20' X 8'
HOSE REEL

CONTAINER HYDRAULICS / ENGINE N/A 20' X 8'

MOTOR MANIFOLD MM9710031 MOTRA0160D HMI2S

FILTER MANIFOLD FM9701014 FTRTA0160C HMI
PUMP DRIVE 2 TESCO D2P-85 24020151
POWER CORD N/A 150'
 Page 8

Specification Sheet Tesco 250 HMI Top Drive

Unit Configuration

Torque Track

PART NAME SERIAL NUMBER SIZE

T-BAR N/A 49.5"

TORQUE ANCHOR BEAM N/A 19'
HMI TORQUE TRACK N/A 18'6"
HMI TORQUE TRACK N/A 18'6"
HMI TORQUE TRACK N/A 18'6"
HMI TORQUE TRACK N/A 10'
HMI TORQUE TRACK N/A 18'5"
HMI TORQUE TRACK SPARE N/A 18'6"

Lubrication Specifications

APPLICATION VISCOSITY QUALITY

Caterpillar 3400 Series 15w40 API Classification: CG-4, CH-4

Pump Drive 40 Weight Engine Oil API Classification: CG-4, CH-4,CF-2
Top Drive Gearbox 80W90 Gear Oil EP…GL-6
Swivel 80W90 Gear Oil EP…GL-6
Hydraulic System Viscosity Index 160,135 ISO-32 Minimum, 68 Maximum

Subs Inventory

DESCRIPTION SIZE QUANTITY

SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 11" 1

SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 10" 1
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 9" 4
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 8" 4
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 7" 2
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 6" 3
SAVER SUB 4 1/2"IF P X 4 1/2"1F P LENGTH 5" 2
X/O SUB 3 1/2"IF P X 4 1/2"IF P LENGTH 12" 1
X/O SUB 3 1/2"IF P X 4 1/2"IF P LENGTH 11" 2
X/O SUB 3 1/2"IF P X 4 1/2"IF P LENGTH 10" 1
X/O SUB 3 1/2"IF P X 4 1/2"IF P LENGTH 13" 1
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 11" 2
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 12" 1
X/O SUB 4"FH P X 4 1/2"IF P LENGTH 8" 3
X/O SUB 3 1/2"IF P X 4"FH P LENGTH 11" 1
X/O SUB 3 1/2"IF P X 4"FH B LENGTH 10" 3
X/O SUB 4"FH P X 4 1/2"IF P LENGTH 10" 3
X/O SUB 4"FH P X 4 1/2"IF P LENGTH 9" 4
SAVER SUB 4 1/2"IF P X 4 1/2"IF P LENGTH 6" 1
X/O SUB 6 5/8"REG LH X 7 5/8"REG P LENGTH 8" 2
4 1/2"IF B X 4 1/2"IF B W/SPLINE
KELLY COCK LENGTH 23" 2
X/O SUB 4 1/2"IF P X 4"FH P LENGTH 9" 1
 Page 9

Specification Sheet Tesco 250 HMI Top Drive

Unit Configuration

Tool Room Inventory

PRODUCT DESCRIPTION QUANTITY

32MM SPANNER N/A 3

30MM SPANNER N/A 1
27MM SPANNER N/A 2
24MM SPANNER N/A 3
22MM SPANNER N/A 2
19MM SPANNER N/A 1
17MM SPANNER N/A 2
16MM SPANNER N/A 1
15MM SPANNER N/A 1
14MM SPANNER N/A 2
13MM SPANNER N/A 1
12MM SPANNER N/A 2
11MM SPANNER N/A 1
10MM SPANNER N/A 2
9MM SPANNER N/A 2
6MM SPANNER N/A 2
1"3/4 SPANNER N/A 2
1"5/8 SPANNER N/A 2
1"1/2 SPANNER N/A 2
1"3/8 SPANNER N/A 2
1"5/16 SPANNER N/A 3
1"1/4 SPANNER N/A 2
1"1/8 SPANNER N/A 3
1"1/16 SPANNER N/A 5
1"SPANNER N/A 1
7/8 SPANNER N/A 2
13/16 SPANNER N/A 2
3/4 SPANNER N/A 2
11/16 SPANNER N/A 2
5/8 SPANNER N/A 2
9/16 SPANNER N/A 2
1/2 SPANNER N/A 1
7/16 SPANNER N/A 2
3/8 SPANNER N/A 1
5/16 SPANNER N/A 2
12" CRESCENT WRENCH N/A 1
BALLPEIN HAMMER N/A 1
HACKSAW N/A 1
24" PIPE WRENCH N/A 1
HUB SEAL KIT FOR HI-CAL ROTO TDA ACUATOR 2
CAT AIR FILTER 4N-0015 1
KZX10 SCHROEDER HYD. FILTER N/A 4
MANN WATER FILTER WK842/2 1
RACOR SEE-THRU BOWL W/WATER
P/N RK11-1606 1
SENSOR PORT
4"DB HI CAL KELLYCOCK 10,000WP
S/N 3067-DB-FH-036 1
H2S TRIM
 Page 10

Specification Sheet Tesco 250 HMI Top Drive

Unit Configuration

Tool Room Inventory - Continued

PRODUCT DESCRIPTION QUANTITY

Nylatron F/Torque Bushing Front

P/N 8389 2
Liner
Nylatron F/Torque Bushing Back
P/N 8388 3
Wear Pad
Nylatron F/Torque Bushing Left
P/N 8387 2
Hand Liner
Nylatron F/Torque Bushing Right
P/N 8386 2
Hand Liner
3/8" Nylock Lock Nuts F/Torque
N/A 1 box
Bushing
Washpipe Packing P/N 0727-01-008-03 7
Washpipe for swivel R 200 5889-155-04-R 7
Washpipe Assembly 8021 1
Drawworks Ext "C".airline with
4727 1
Rexroth Pneumatic Valve
Drawworks Ext "C".airline with
4727 1
Junction Box
"D" Mudpump Airline 4725 1
"D" Mudpump Airline
4725 1
w/Pneumatic Valve
Drawworks Airline Ext "C" With
4726 1
Pneumatic
Brake Handle airline with control
4723 1
box
"D" Mudpump airline With
N/A 1
Junction Box
"G" Mudlogger Airline 4722 1
1/2" 5000 PSI Gauge N/A 1
1/2" 60 Bar Gauge N/A 1
1 1/2" Ball Valves (5000PSI) SKH-3/2NPT P/N 350 7
Nipple 1 1/2" x 2 1/2" N/A 5
Pressure Control Pilot S/N 1207692 1
Bensheim Control Unit Type F-
D-64625 1
201(Drillers Control)

Drillers Secondary Control Unit N/A 1

Contact Switch XBW-E101 P/N 2270 28

Actuator Stripping Kit N/A 1
Directional Valves VS5M-3F-GB-70L-K 3
1/4" 3000PSI Gauges N/A 6
Lithium Grease N/A 35 Tubes
Hi-Temp Grease N/A 12 Tubes
Grease Gun N/A 1
Short Handle 2 Position Switch ZB2BD2 3
3 Position Switch ZB2BJ3 36
Spring Loaded Position Switch ZB2 BJ5 22
Adaptor Plate for Switches ZB2 B24 9
Switch Base ZB2 B2009
3/4" x 28" 215 bar hyd. hose N/A 1
3/4" x 17" 2250psi hyd.hose N/A 1
3/4" x 13" 215 bar hyd. hose N/A 1
3/4" x 9" 215 bar hyd. hose N/A 1
 Page 11

Specification Sheet Tesco 250 HMI Top Drive

Unit Configuration

Tool Room Inventory - Continued

PRODUCT DESCRIPTION QUANTITY

1/2" x 45" 5000psi hyd. hose N/A 1

1/2" x 42" 5000psi hyd. hose N/A 1
3/8" x 124" 4000psi hyd. hose N/A 1
3/8" x 32" 330bar hyd.hose N/A 3
3/8" x 74" 330bar hyd. hose N/A 2
3/8" x 92" 330bar hyd. Hose N/A 1
3/8" x 10" 330 bar hyd.hose N/A 1
3/8" x 24" 330bar hyd. Hose N/A 1
3/8" x 16"330bar hyd. Hose N/A 1
3/8" x 18" 330bar hyd hose N/A 2
3/8" x 9" 330 hyd.Hose N/A 1
3/8" x 34" 5000psi hyd. Hose N/A 1
1/4" x 42" 5000psi hyd. Hose N/A 1
1/4" x 56" 5000psi hyd. Hose N/A 1
1/4" x 34" 5000psi hyd. Hose N/A 2
1/4" x 97" 5000psi hyd. Hose N/A 1
1/4" x 15" 5000psi hyd. Hose N/A 2
1/4" x 11" 5000psi hyd. Hose N/A 1
1/4" x 26" 5800psi hyd. Hose N/A 1
1/4" x 38" 2150psi hyd hose N/A 1
1/4" x 57" 5000psi hyd. Hose N/A 1