TDS - 11SA

Top Drive

Drilling

System

800 HP/500 TON or

April 1998

Rev. A

1

2

TDS -11SA

Top Drive Drilling System

April, 1998

Technical Bulletin

This document contains information, and such information may not be disclosed to others for any purpose, nor used for manufacturing purposes without written permission from VARCO International, Incorporated

Varco Drilling Systems:

743 North Eckhoff Street,

Orange, California 92868, U.S.A.

Tel. (714) 978-1900

Fax. (714) 937-5029

12950 West Little York Street,

Houston, Texas 77041, U.S.A.

Tel. (713) 937-5500

Fax. (713) 937-5095

Forties Road,

Montrose, DD10 9ET, Scotland

Tel. 44-1674-677222

Fax. 44-1674-677379

No. 8 Sixth Lok Yang Road,

Jurong, Singapore 2262

Tel. 65-265-5066

Fax. 65-264-0578

Moscow,

Russian Federation

Other Varco Offices:

Beijing,

People's Republic of China

Edmonton,

Alberta, Canada

Perth,

Australia

Lafayette,

Louisiana

Abu Dhabi,

United Arab Emirates

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TDS-11SA Top Drive Drilling System

Contents

Section 1

Introduction .................................................................................. 7

Introduction to the TDS-11SA ........................................................................................................ 7

Breakthroughs in drilling technology ............................................................................................... 8

Section 2

Description .................................................................................. 11

TDS-11SA Major components ...................................................................................................... 11

Motor housing and swivel assembly ......................................................................................... 13

Motor cooling system .............................................................................................................. 17

Carriage and guide beam.......................................................................................................... 18

PH-50 pipehandler .................................................................................................................. 20

Hydraulic control system ......................................................................................................... 26

AC motors and control system ................................................................................................. 29

Section 3

Operation .................................................................................... 31

Driller’s interface and driller’s console ............................................................................................ 31

Variable frequency inverter ............................................................................................................ 34

Service loop ................................................................................................................................... 36

Contents 5

Drilling ahead ................................................................................................................................ 36

Drilling ahead with triples ....................................................................................................... 36

Drilling ahead with singles ....................................................................................................... 38

Tripping in and tripping out.................................................................................................... 40

Back reaming ........................................................................................................................... 40

Well control procedures ........................................................................................................... 42

Running casing ........................................................................................................................ 42

Section 4

Installation................................................................................... 45

Installing the TDS-11SA ............................................................................................................... 45

Section 5

Specifications ............................................................................... 55

Section 6

Appendix ..................................................................................... 57

6 Contents

Introduction

Section 1

Introduction to the TDS-11SA

Varco Drilling Systems acknowledges the accelerating demand for increased productivity in land drilling operations and has responded to this growing market with the development of the innovative TDS-11SA Top Drive Drilling System.

Varco engineering has made use of the recent advancements in AC technology by designing the

TDS-11SA to be powered by two AC drilling motors (either 400 or 350 hp each, depending on the configuration). These 800-hp and 700-hp systems produce 32,500 and 37,500 ft lb of drilling torque respectively. They can provide 47,000 and 55,000 ft lb of make-up/break-out torque respectively.

The TDS-11SA is compact enough to operate safely in a standard 142' mast while providing 500 tons of hoisting capacity. Its highly portable design allows for rig-up and rig-down in just a few hours. It easily integrates into existing rigs at minimal installation cost and minimal rig modification.

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Breakthroughs in drilling technology

In today’s competitive land and offshore drilling markets, improving productivity by reducing cost per well is a top priority to operators in both horizontal and vertical drilling programs. Low maintenance, quick portability, reduced downtime and low acquisition costs are prime considerations for drilling contractors who strive to reduce the cost per well. Varco has produced a top drive system to meet all of these needs.

Increase productivity and reduce the cost per well

The following TDS-11SA features describe how this drilling system will help you increase productivity and reduce the cost per well:

❏ AC motors have no brushes, brush gear, or commutator—reducing maintenance costs. Additionally, AC motors have no arcing devices.

❏ The TDS-11SA has an onboard hydraulics system that eliminates the need for a stand-alone hydraulic power unit and fluid service loop—further reducing accessory costs.

❏ The two AC motors, the Varco integrated swivel, and the new rig-up and rig-down techniques reduce downtime while providing the most compact and portable drilling package available on the market today.

❏ The two motors and the drive train provide a redundant power path, increasing the life expectancy of these components. This also reduces downtime and maintenance costs.

❏ The TDS-11SA features a hydraulic link tilt that can tilt the elevator to either side of well center.

❏ The TDS-11SA is specifically built for quick portability.

❏ The TDS-11SA uses helical gearing to reduce noise.

❏ A higher speed (550 rpm max.) TDS-11SA is available.

The TDS-11SA has all of the benefits the big top drives have

All of the operational benefits, cost savings and proven time savings realized by utilizing a top drive hold true with this smaller, less expensive unit. The TDS-11SA will provide drilling contractors with all of the benefits of a big top drive:

❏ Drilling ahead with 93' stands

❏ Eliminating two out of every three connections

❏ Back reaming and forward reaming capabilities

❏ Full rotation and circulation when tripping out

❏ Pulling through tight spots

❏ Reducing the incidence of stuck pipe

❏ Controlling stand connections

❏ Making and breaking connections with the top drive

❏ Drilling through bridges and tight spots without picking up a kelly

❏ Well control

❏ Instant stabbing and well shut-in at any position in the mast when tripping

❏ Crew safety

❏ Only smooth drill pipe rotating on the rig floor.

❏ Operators only need a backup tong

❏ Reduced power generation costs by using smaller diesel generator sets; and reduced fuel consumption.

The TDS-11SA, from the innovators at Varco Drilling Systems, incorporates state-of-the art technology in the most important innovation in drilling since the rotary table.

The following product information describes the mechanical, electrical, and hydraulic systems of the TDS-11SA, as well as operational and installation information to help clarify the benefits realized by utilizing the Varco TDS-11SA top drive.

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10

AC Drilling Motors

System Bail

Counterbalance

System

Gooseneck

(S-Pipe)

Bonnet/Upper Bearing

Retainer Assembly

Transmission/Motor Housing and Swivel Assembly

Carriage Assembly

Sectional Guide Beam

TDS-11SA Top Drive Drilling System

PH-50 Pipehandler Assembly

Description

Section 2

TDS-11SA Major components

The TDS-11SA drilling system includes the following main assemblies and subassemblies:

❏ Motor housing and swivel assembly

❏ Motor cooling system

❏ Carriage and guide beam

❏ PH-50 pipehandler

❏ Hydraulic control system

❏ Counterbalance system

❏ AC drilling motors and control system

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12

Counterbalance

System

Bail Rest

Drilling Motor

Brake-2

System Bail

Integrated

Swivel

10.5 : 1

Transmission

216 (5486)

18.0 ft

TDS Working

Height

Gearcase Bottom

Existing Traveling

Equipment

Sectional

Guide Beam

Cooling Fan

AC Motor-2

Cooling System

(Local)

Mud

S-Pipe

350 or 400 H.P.

AC Drilling Motor-2

System

Carriage

Guide Beam

Lower Attachment

119 (3023)

Pipehandler

Working

Height

48 (1219)

Connection

Height

Tool Joint

108 (2743)

Links

8 ft

(2438)

Minimum

350 Ton

Elevator

Drill Floor

TDS-11SA General Arrangement

Motor housing and swivel assembly

This assembly is comprised of the following subassemblies:

❏ Transmission and swivel housing

❏ Integrated swivel assembly

❏ Drilling motors and brakes

Transmission and swivel housing

The assembly consists of the following components:

❏ Bonnet

❏ Main body and transmission housing

❏ 2 Motor pinions–34T

❏ 2 Compound gears–63T/18T

❏ Bull gear–102T

❏ Main shaft

❏ Integrated swivel assembly

❏ Lubrication system

The single-speed helical gear transmission with double reduction provides a 10.5:1 ratio from the motors to the main shaft. The main body and gearcase cover house the transmission, the main thrust and radial bearings. The gearcase cover houses the upper take-up bearing and supports the

AC motors and bonnet. The bull gear attaches to the load shoulder on the main shaft. All lubrication of the gears and bearing is via a pressurized system integrated into the main body and cover.

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System Bail

5 HP AC Cooling Fan Motor (2)

Cooling System

Hydraulic Brake (2)

Bonnet

350 HP or 400 HP AC

Drilling Motor (2)

34 Tooth Motor

Pinion Gear (2)

102 Tooth Bull Gear

Gearcase

500 Ton Swivel

Thrust Bearing

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Overall Reduction

10.5 : 1

One-piece Drive Stem

TDS-11SA Power train cutaway

63x18 Tooth Compound Gear (2)

Integrated swivel assembly

The main body and transmission housing provide a sealed oil lubrication reservoir for the gears and bearings. An oil pump, integrated into the housing and powered by a hydraulic motor, feeds the bearings and gears. The filtered lubrication oil constantly circulates through the main thrust bearing, upper taper bearing, lower radial and compound gear bearing, and over the gear meshes.

An industry-standard washpipe packing assembly is located between the main shaft and gooseneck, and allows for the rotation of the drill string. The bonnet supports the assembly and attaches to the gearcase to provide lateral support.

A swivel bail of forged alloy steel attaches to the main body with bail pins. It swings forward to attach to standard drilling hooks. The bail is fitted into the main body with grease-lubricated bronze bushings. An extended length is available to allow operator clearance between the gooseneck and hook for wireline packing assemblies.

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Drilling motors and brakes

Two 400-hp or two 350-hp AC drilling motors supply power to the TDS-11SA. The motors mount vertically side by side on top of the transmission gearcase cover with a modified “D-face” to avoid shimming or special alignment during installation of the motors.

Each motor has a double-ended shaft with a drive pinion mounted on the lower end and a disc brake rotor mounted on the upper end. Two hydraulic caliper disc brakes mount to the top end of each motor, where they can be easily inspected and serviced via the access covers around the brake covers. The caliper disc brakes also assist in drill string positioning when performing directional work. They are remotely operated from the driller’s console.

Calipers and Shoes

Brake Disc

TDS-11SA Disk Brake

Motor cooling system

The motor cooling system on the TDS-11SA is a local intake centrifugal blower consisting of two 5 hp AC motors mounted on top of each AC drilling motor. The system draws air across the brake and delivers it through rigid ducting to an opening at the top of each motor. The cooling air then passes through the inside of the open-frame type AC drilling motors and exits through the louvered opening near the bottom of the motors. This rugged, simple design provides highly reliable service with positive ventilation.

Centrifugal Blower

(2 Places)

5 HP AC Motors

Disk Brake Housing

(2 Places)

Air Flow

Duct

AC Drilling Motor

(2 Places)

Intake Air Flow

(Between Motor and

Brake Housing)

Louvers

Exhaust Air Flow

TDS-11SA Motor cooling system

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Carriage and guide beam

The TDS-11SA drilling system travels on a hanging guide beam by means of a carriage attached to the gearcase. The guide beam hangs from the crown and extends to within seven feet of the drill floor. There, it attaches to a torque reaction beam mounted across the lower section of the mast or derrick.

The drilling torque is reacted through the carriage and into the guide beam. The guide beam is available in 18' sections (132 lb/ft) and hangs from a pad eye at the crown. The guide beam sections are pinned together in such a way that they hinge to facilitate installation. You can assemble them one section at a time at the drill floor while raising the guide beam to the crown attachment using the drawworks.

Sectional

Guide Beam

Front

Power

Train

Pipehandler

Assembly

Carriage and guide beam

Carriage

Assembly

Rotating Link

Adapter (Ref.)

Upper IBOP

Remote Actuator

Hydraulic Cylinder

Main Shaft

Upper IBOP

(Remote)

Tool Joint

Lock (3)

Manual Lower IBOP

(Optional)

Saver Sub

(Short)

Back-Up Clamp

Assembly (Ref.)

VARCO

TDS-11SA Drill stem assembly

Landing Collar

Torque Arrester

Frame

P

H

5

0

V

A

R

C

O

IBOP Actuator

Yoke

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PH-50 pipehandler

The PH-50 pipehandler consists of the following major components:

❏ Powered rotating head/link adapter

❏ Bidirectional link tilt

❏ Loading collar

❏ Remote upper IBOP actuator

❏ Torque backup clamp

Powered rotating head and rotating link adapter

The powered rotating head/rotating link adapter allow the hydraulic lines to remain connected as the pipehandler rotates with the drill stem components while tripping out or when positioning the link tilt.

The powered rotating head/link adapter has a hydraulic drive motor to rotate it in either direction. An electric solenoid valve, connected to a switch on the driller’s console, operates the hydraulic motor. A pinion gear on the hydraulic drive motor rotates the positioning gear that is attached to the top of the rotating link adapter. During make or brake operations the rotating link adapter can be locked into any of 24 index positions by selecting the pipehandler clamp mode and actuating a hydraulically operated shot pin. When the hydraulic drive motor is not powered the link adapter can rotate freely.

The link tilt cylinders and the torque arrestor frame hang from the rotating link adapter.

The link adapter is attached to the stem support. The internal hydraulic fluid passages in the stem connect to the respective fluid passages in the rotating link adapter. Fluid is fed from the main manifold into the stem through the radial passages at the upper end. This fluid is routed from the stem through its grooves to the link adapter and out to all actuators on the pipe handler. While rotating or in any stationary position, fluid flows between the two components.

Rotating Link Adapter

Elevator Positioner

Link Tilt Cylinders

(2)

Remote IBOP

Actuator

Two-way

Link Tilt Assembly

Torque Arrester

Frame

Manual IBOP

Torque Back-up Clamp

Assembly

Adjustable

Stabbing Guide

Elevator Links

Drill Pipe

Elevator Assembly

PH-50 Pipehandler with torque backup clamp

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Bidirectional link tilt

The link tilt assembly consists of two hydraulic cylinders and clamp assemblies. The link tilt assembly is attached to 350-ton, 108-inch long elevator links with clamp assemblies. The latch on the cylinder assembly limits the travel of the elevator to the derrick man position which is adjustable. Releasing the latch by pulling a cable allows the elevator to travel to the mousehole or overdrill position.

The link tilt operates from a three-position switch located on the driller’s console. The TILT position moves the links toward the mousehole or derrickman. The DRILL position tilts the link back to clear the drill pipe and raise the elevator to allow drilling down to the floor. The spring centered position holds the link at any intermediate position. There is a separate float switch which is used to allow the links to hang free. The links may be stopped at any intermediate position. The links float back to the well center when the FLOAT position button on the driller’s console is operated.

Link Tilt Cylinder (2)

All dimensions are true for

108" long Elevator Links and

FOR REFERENCE ONLY

* Typically-90

°

from Mousehole

Position and rotated into view

FOR CLARITY ONLY

** At Monkey Board level (80') and placed into view

FOR CLARITY ONLY

Overdrill *

108(2743)

14(356)

4(102)

Mousehole

Derrickman **

34(864)

56(1422)

28(711)

76(1930)

36(914)

Typ.

Well

PH-50 Bidirectional link tilt positions

Drill Floor

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Loading collar

Elevator hoisting loads are transferred from the elevator links through the elevator into the load collar, mounted on the mainshaft.

Load Landing Collar

Mainshaft

Hoisting Position

P

H

5

0

V

A

R

C

O

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VARCO

Drilling Position

Load collar and mainshaft detail

Load Collar with Clearance

Mainshaft

Remote upper IBOP actuator

The two ball type IBOP valves are full size, internal opening safety valves. The remotely operated upper valve and the manually operated lower valve form the well control system. Both valves have 6-5/8" regular R. H. connections and 15,000 psi pressure ratings.

A two-position switch at the driller’s console operates the OPEN and CLOSE functions of the upper IBOP valve. When the switch is operated, a hydraulic cylinder through a non-rotating lever arrangement attached to the torque arrestor slides an actuator shell up and down. This lever arrangement drives a small crank arm on each side of the valve which opens and closes the upper

IBOP valve.

Torque backup clamp

The backup clamp assembly is located below the lower shoulder of the saver sub. It includes two gripping jaws with die inserts and a clamping cylinder for gripping the box end of the drill string when connected to the saver sub. A torque arrestor frame hanging from the rotating link adapter supports the torque backup clamp cylinder. It attaches to the torque arrestor frame with flexibility for floating up or down to allow for thread engagement/disengagement and reacting backup torque while making and breaking connections.

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Hydraulic control system

The hydraulic control system is completely self-contained (onboard) and supplies all hydraulic power. It eliminates the need for an additional service loop. The system consists of reliable, industry-standard components that operate the following assemblies:

❏ Counterbalance system

❏ AC motor brakes

❏ Lubrication system

❏ Powered rotating head

❏ Remotely actuated IBOP

❏ Torque backup clamp

❏ Link tilt

The hydraulic control system is powered by a 10 hp, 1800 rpm AC motor that is direct coupled to drive two hydraulic pumps. A fixed-displacement pump drives the lubricating oil system and a variable displacement pump drives all other functions.

An integral hydraulic manifold mounts to the main body and contains all solenoid, pressure, and flow control valves.

A “sealed” stainless steel reservoir supplies the hydraulic oil. This eliminates the need for draining and refilling during normal rig moves. The reservoir, mounted between the two AC drilling motors, is equipped with strainers and oil level sight gauges.

Hydro-pneumatic accumulators operate the IBOP, pressure control valves, and counterbalance system.

Drilling

Motor Brake

Counterbalance

Accumulator

Upper IBOP

Actuator

Cylinder

Link Tilt

Cylinders

Pipehandler

Clamp

Cylinder

Rotating

Link

Adapter

Lift

Rotating Head

(Elevator Positioner)

Counterbalance

Cylinders

Lock-up

Cylinder

Rotating

Head Motor

Lube Oil

Distribution

System Control Manifold

PV

PF

Upper IBOP

Unloading

Accumulator

10 HP A.C.

Motor

M

Variable

Displacement

Pump

Fixed

Displacement

Pump (Mtr. Lube)

System

Accumulator

Filter

Low Speed

Hydraulic

Motor

Lube Oil

Gearbox

Sump

Pump

Reservoir

TDS-11SA Hydraulic system

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Counterbalance system

The counterbalance system prevents damage to tool joint threads while making or breaking connections with the TDS-11SA. It replaces the function of the hook compensator spring.

The system consists of two hydraulic cylinders and attachment hardware, a hydraulic accumulator, and a hydraulic manifold. The hydraulic cylinders are located between the integrated swivel bail and the ears of the hook. They connect to a hydraulic accumulator. The accumulator is charged with hydraulic fluid and maintained at a predetermined pressure setting by the counterbalance circuit in the main hydraulic control system manifold. A remote valve on the driller’s console allows the counterbalance cylinders to extend and retract to aid in rig-up and rig-down operations.

STAND JUMP option

Varco has developed a new feature for the TDS-11SA called STAND JUMP. It consists of a switch at the driller’s console allowing you to change the mode of operation of the counterbalance cylinders from DRILL, which is a standard counterbalance condition, to

STAND JUMP. The STAND JUMP feature allows the cylinders to lift the weight of the top drive off the drill string while breaking out a connection. This eases the stress on the threads and avoids damage. The cylinders lift the swivel bail off its resting point on the hook.

Pear Link

Clevis Pin

Counterbalance

Cylinder

32.7" Fully Extended

31.5" as Shown

24.2" Fully Retracted

Bail

Pre-fill Valve

To Counterbalance Accumulator

Counterbalance system

AC motors and control system

The TDS-11SA uses two 400-hp or 350-hp AC motors. They are located on top of the gearcase, which minimizes the distance from the well centerline to the rear of the guide beam.

Varco selected AC drilling motors for use on the TDS-11SA because they provide the following benefits:

❏ Reliability

❏ Low maintenance

❏ Nonpolluting

❏ Wide operational range

❏ May be stalled indefinitely at full torque

❏ 150% overload capability for up to one minute

❏ Non-sparking

The AC motors available to power the TDS-11SA are 600 VAC, 3 phase. Input frequencies vary from 0 to 80 Hz. Each motor requires 1100 CFM of cooling air.

Each motor is rated at 400 hp or 350 hp with a maximum continuous output torque of 1,800 ft lb and 1,550 ft lb per motor respectively. The maximum continuous torque is available from 0 to

1200 motor rpm, with continuous 400 hp or 350 hp from 1200 motor rpm up to the maximum rated motor speed of 2400 rpm.

Combining the two 400 hp AC motors (800 hp total) and utilizing the 10.5:1 gear ratio provides 37,500 ft lb of torque at a drill operating speed range of 0 to 114 rpm. Maintaining the

800 output hp provides 18,250 ft lb of torque at a maximum drill speed of 228 rpm. A graphical display is appears in Section 6.

Combining the two 350 hp AC motors (700 hp total) and utilizing the 10.5:1 gear ratio provides 32,500 ft lb of torque at a drill operating speed range of 0 to 114 rpm. Maintaining the

700 output hp provides 15,100 ft lb of torque at a maximum drill speed of 228 rpm. A graphical display is appears in Section 6.

The open-frame design of the AC drilling motors allows the cooling air to pass through the inside of the motors, which provides more efficient transfer of rotor and winding heat to the cooling air. The motors are manufactured specifically for top drive applications. They include:

❏ Internal temperature sensors

❏ Double varnish impregnated windings

❏ Upgraded bearing/shaft seals

❏ High-capacity bearings

❏ Tapered output shafts

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Hydraulic Motor Brake (Ref)

Thrust Ball Bearing

Foot Mounting Pad

Upper Grease Fitting

Air Inlet

(1100 CFM)

End Coil

30

Motor Frame (Laminated)

Motor Shaft (Vertical Type)

Mounting Base

Pinion Gear (Ref)

Typical AC Drilling motor

Rotor Assembly (Laminated)

Stator Assembly (Laminated)

Air Exhaust

End Coil

Lower Grease Fitting

Guide Roller Bearing

Operation

Section 3

Driller’s interface and driller’s console

The driller’s console is manufactured from 300-series stainless steel and it uses full-size, oil-tight switches and indicators. It is designed for purging to meet hazardous area requirements. By request, Varco can supply the console with Pyle-National, U.L., or Ex connectors.

Throttle control

The throttle uses a design similar to the standard throttle control used with SCR systems. The handle is robust and includes integral stops to prevent damage.

Torque control

Two torque limit potentiometers are provided for setting drill and makeup torque limits.

The drill limit control allows the driller to set the maximum torque output of the top drive to match the drill pipe size being used.

The makeup control sets the torque when making up connections using the TDS-11SA drilling motors.

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DC Generator

(Alternate)

-

+

AC Power

Highline or

Diesel/Alternator

Set

Encoder

Top Drive

Motor

1

Motor

2

+

-

*

Variable

Frequency

Inverter

*

Mast

Terminaton

Panel

Electrical

Service

Loop

Aux. Power

Loop

System

Electrical Panel

Solenoids J-Box

Sensors

PLC

Varco

Driller's

Console

*

Jumper Cable Assemblies could be used between

Mast Termination Plate and Skid (Control House).

Electrical interface

Switches

Various switches control the following functions:

❏ Drill/Spin/Torque mode select

❏ Link tilt

❏ Brake

❏ Backup clamp

❏ Powered rotating head

❏ IBOP valve

❏ Forward and reverse selection for the drill pipe rotation

❏ Emergency stop

❏ Stand jump (optional)

Indicators

Various indicators report status/faults to the driller:

❏ Oil pressure loss

❏ Drill motor over temp

❏ Blower loss

❏ IBOP closed

❏ Brake

❏ Drive fault

MAKE-UP

CURRENT LIMIT

OIL

PRESS LOSS

PIPEHANDLER

LEFT

ROTATE LINK TILT FLOAT

RIGHT

BRAKE

BRAKE

ON

IBOP

IBOP

CLOSED

THROTTLE

0 MAX

PURGE LOSS

DRILL MOTOR

OVERTEMP

TORQUE WRENCH

PUSH & HOLD

DRILL

LINK TILT

OFF

TILT OFF

BRAKE

AUTO

BRAKE

ON

OPEN

IBOP

CLOSE

EMERGENCY

STOP

0 MAX

DRIVE

FAULT

REVERSE

OFF

FORWARD

DRILL TORQUE

DRILL

SPIN BLOWER LOSS

TORQUE

ALARM

SILENCE

/

LAMP

CHECK

HYDRAULIC POWER

AUTO ON

0 MAX

TORQUE

Torque Meter RPM Meter

RPM

Varco driller’s console (VDC)

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34

Varco control system

The driller’s PLC panel is located in the environmentally controlled variable frequency inverter house.

It provides an interface between the driller’s console, the variable frequency inverter, and the

TDS-11SA. It includes the following components:

❏ Control logic for system interlocks

❏ Blower and oil pump motor starters

❏ Control circuitry for pipehandler functions

❏ Power supply for TDS-11SA solenoids and VDC indicators

Inputs to the variable frequency drive is via serial communications that provide speed and torque inputs, and on, reverse and emergency stop inputs. Additionally, any changes to alarm or interlock functions have no effect on the frequency drive. Function changes are implemented with the same programming tools used on the standard Varco top drive systems.

The control system receives input from the operator controls on the driller’s console and processes this information through the programmable logic controller (PLC). It controls the responses of the cooling system motor, the solenoid valves, the brakes, IBOP functions, and sensors. The control system reads the status of the sensors and acts as an interlock to prevent inadvertent tool operations. It notifies the driller of the operational status of the TDS-11SA and provides a diagnosis of any inadvertent operational conditions.

Variable frequency inverter

The variable frequency inverter (VFI) consists of the following three major sections:

Rectifier or converter

In this section, the incoming 3-phase AC power is converted to DC for use by the power devices.

Alternately, by bypassing the rectifier section, the drive can be powered from a 740 VDC generator.

Power modules

Motor speed control requires, a variable frequency voltage. To do this, DC power is converted to an output waveform that consists of a series of pulses. The duration of each pulse is controlled so that the voltage to the AC motors appears as an AC sine wave. The technique of using pulses to develop a waveform that appears to a motor to be a sine wave is called pulse width modulation or

PWM.

Control section

The control section monitors the performance of the drilling motor, accepts throttle and torque limit signals from the TDS-11SA control system, and controls the firing circuits of the power modules.

To vary motor speed, the driller uses a hand throttle. The throttle varies the frequency and voltage to the motor. Because the drilling motor is frequency synchronous, the motor speed is proportional to the frequency (i.e., 20 Hz is 600 motor rpm, 40 Hz is 1200 motor rpm).

One of the greatest advantages of an AC variable frequency drive is the quality of the speed and torque control. It allows you to precisely control drill pipe speed over the full operational range.

Variable Frequency Drive

600 VAC, 42 to 62 Hz

3-Phase (733 AMPS Max)

Resultant Pulse DC

0

0

0

780 VDC

Insulated gate Bi-polar

Transistors (IGBT)

+

20 Hz=600 RPM @ Mtr.

0

AC

Power

Source

-

AC Inverter

(AC Frequency Drive)

Inverter Controller

0

40 Hz=1200 RPM @ Mtr.

PLC

Data Bus

AC Power conversion to variable frequency

35

Service loop

The TDS-11SA has an onboard hydraulic system and, therefore, does not need a fluids service loop. This adds to the cost-effectiveness of the TDS-11SA drilling system and provides a safer work area.

The TDS-11SA service loops consist of power and ground cables, composite cable for all conductors for drilling motors and actuators (solenoid) control, and auxiliary power cables. Cable configurations are available for portable and fixed applications for U.L. and EEx requirements.

36

Drilling ahead

Drilling ahead with triples

This is the common drilling mode for the TDS-11SA. There are various sources for triples to drill with. On skidding rigs drilling multiple wells, or rigs that can move with racked pipe, the drill pipe can be left racked and used to drill the next well. If triples do not currently exist to drill with, there are two recommended methods of obtaining them. One is to leave some triples racked in the derrick when tripping back in the hole and finish the trip with singles. Enough triples should be left racked to handle anticipated bit life. The second is to make up triples in the mousehole while drilling ahead or during rig idle time. For safety reasons it is best to have a pivoting mousehole so it can be put in a vertical plane to simplify making connections. Note that the connections just need to be spun up as they will be torqued when the top drive motor applies the make-up torque.

Procedure for drilling ahead with triples: a. Drill down the existing stand and set the slips.

b. Breakout the saver sub from the drill pipe using the top drive motor and backup clamp in the pipehandler.

c. Spinout the connection using the drilling motor.

d. Lift the top drive.

e. The derrickman latches the triple in the elevator and the floor crew stabs it in the box.

f. Lower the top drive, stabbing the pipe into the stabbing guide until the pin of the saver sub enters the box.

g. Spin-up and torque the connection using the drilling motor (make-up torque must be preset). Use a backup tong to react the torque.

h. Pull the slips, start the mud pumps and drill ahead.

Set slips on string

Stop circulation

Breakout connection using pipehandler and drilling motor

(in reverse)

Raise block

Tilt link tilt to derrickman

Pickup stand with elevator

Stab bottom of stand onto string

Lower block to stab motor into top of stand

Spin in motor and stand

Makeup both connections with motor

Pull slips

Start circulation

Begin drilling

1

Link

Tilt

2 3

4

Makeup

5

Start

Circulation

Stop

Circulation

Stab

Drilling ahead with triples

Makeup

37

38

Drilling ahead with singles

Typically there are two situations when it is desirable to drill ahead with singles. One is beginning operations on a new well and there are no triples made-up and racked back. The other is when surveys must be made every 30 feet (kicking off using a downhole mud motor). The link tilt feature makes drilling with singles safe and efficient by moving the elevators to the mousehole to pick up the singles.

Procedure for drilling ahead with singles: a. Drill down the existing joint and set the slips.

b. Breakout the saver sub from the drill pipe using the top drive motor and the backup clamp in the pipehandler.

c. Spin out the connection using the drilling motor.

d. Lift the top drive until elevators clear box.

e. Actuate the link tilt to bring the elevator over to the single in the mousehole, lower the top drive and latch the elevator around the single in the mousehole.

f. Pull the single out of the mousehole and as the pin clears the floor, release the link tilt to allow the single to come to well center.

g. Stab the connection at the floor and lower the top drive allowing the added single to enter the stabbing guide.

h. Spin-up and torque the connection using the drilling motor (torque mode). Set a backup tong to react the torque.

i.

Pull the slips, start the mud pumps and drill ahead.

Set slips on string

Stop circulation

Close IBOP

Breakout connection using pipehandler and drilling motor

(in reverse)

Tilt links to mousehole

Latch drill pipe elevator around single

Pickup single with elevator

Release link tilt

Stab bottom of single onto string

Lower block to stab motor into top of single

Spin in motor and single

Makeup both connections with motor in torque mode

Pull slips

Open IBOP

Start circulation

Begin drilling

1

2

3

4

5

Close

IBOP

Makeup

Link

Tilt

Stab

Drilling ahead with singles

Makeup

Open

IBOP

39

40

Tripping in and tripping out

Tripping is handled in the conventional manner. The link tilt feature can be used to tilt the elevator to the derrickman, enhancing his ability to latch it around the pipe thus improving trip times.

The link tilt has an intermediate stop which is adjustable to set the elevator at a convenient working distance from the monkey board. The intermediate stop is tilted out of the way to allow the elevator to reach the mousehole.

The elevator may rotate in any direction from frictional or torque forces realized by the drill string.

If a tight spot or key seat is encountered while tripping out of the hole, the drilling motor may be spun into the stand at any height in the derrick and circulation and rotation established immediately to work the pipe through the tight spot.

Back reaming

The TDS-11SA permits reaming out of open hole to prevent pipe sticking and reducing keyseat formation, without affecting racking functions associated with normal tripping; i.e., no singles to contend with. This is provided by the ability of the top drive and backup clamp to breakout 93 foot stand in the derrick/mast.

Procedures for reaming out of the hole: a. Hoist the block while circulating and rotating the string until the third connection appears.

b. Stop circulation and rotation, and set the slips.

c. Breakout the stand at floor level, and spin out using the drilling motor.

d. Breakout the drilling motor from the top of the stand using the top drive motor and backup clamp, then spin out with the drilling motor.

e. Pick up the stand with the drill pipe elevator.

f. Rack stand back.

g. Lower the top drive to the floor.

h. Stab drilling motor into box, spin-up and torque with the drilling motor. With light slip loads, the top drive and backup clamps can be used to torque the connection.

i.

Resume circulation and continue reaming out of the hole.

Hoist while circulating and rotating

When 3-rd connection surfaces, stop rotation and circulation

Set slips on string

Breakout connection using pipehandler and drilling motor

(reverse)

Breakout and spinout stand at floor

Hoist free stand with elevator

Setback stand using link tilt

Lower block, stab motor into string

Spin in motor and makeup connection with motor

Start circulation, pull slips, hoist and rotate

1

Breakout

2

Hoist

3

4

Setback

5

Breakout

Back reaming

Hoist and

Rotate

41

42

Well control procedures

The TDS-11SA can stab into the string at any point in the derrick. While drilling, the remotely controlled upper IBOP valve is always in the string for immediate use as needed.

The lower IBOP valve is the same type as the upper IBOP valve except it must be operated manually with a wrench. Both valves always remain in the string and are therefore always readily available by connecting the TDS-11SA to the drill string.

To attach well control equipment to the drill string the torque arrestor frame assembly can be pulled away from the drill string by opening the clamp cylinder gate.

After removing the lower valve from the upper valve, the lower valve remains connected to the drill string for well control purposes. The TDS-11SA includes crossover subs for connecting the drill stem to the lower valve.

Procedure for well control during tripping operations: a. On indication of a kick, set the slips and stab the top drive into the string.

b. Spin-up and torque connection.

c. Close remote upper IBOP.

Internal pipe pressure of up to 15,000 psi is now held by the upper IBOP valve. If it becomes necessary to continue tripping in with a dart valve, or another well control accessory, the lower IBOP valve can be used to assist the operation. In this case, the following steps may be followed: d. Lower string to the floor and reset the slips.

e. Manually close the lower IBOP valve.

f. With the tugger line attached to the back of the unit, swing out the torque arrestor clamp cylinder assembly.

g. Remove the lower and intermediate tool joint locks.

h. Breakout lower IBOP and saver sub from upper IBOP using tongs.

i.

Install appropriate crossover sub, check valve or circulation sub on top of lower IBOP valve.

j.

Proceed with normal well control procedures.

Running casing

For casing operations, longer elevator links (180") must be used to allow clearance for cementing head under the backup clamp in the pipehandler.

Attach a short piece of hose to the saver sub in the pipehandler to fill the casing while lowering.

Use the remotely controlled upper IBOP valve to start and stop the fluid flow.

Rotating Link

Adapter

Main Shaft

IBOP Actuator

Yoke

Upper IBOP

Actuator Shell

Upper IBOP

(Remote Access)

Tool Joint

Lock Typical (3)

Landing Collar

Upper IBOP

Actuator Cylinder

Crank Arm

Lower IBOP

(Manual Access)

Torque Arrestor

Frame

V

A

R

C

O

P

H

5

0

Saver Sub

VARCO

Tugger

Line

Clamp Cylinder Gate

(Shown Open)

Back-Up Clamp

Assembly

Well control procedures

Swing

Clear

43

44

Rotating Link

Adapter

Upper IBOP

Remote Actuator

Hydraulic Cylinder

Upper IBOP

(Remote)

Add X-Over Sub

(Check Valve etc.)

Insert New

Saver Sub

V

A

R

C

O

P

H

5

0

VARCO

Break-out

Closed Lower

IBOP Valve

Lower IBOP

Valve

Saver Sub

Drill Pipe

PH-50 Pipehandler well control procedures

Installation

Section 4

Installing the TDS-11SA

To install a TDS-11SA on an existing rig there will need to be some electrical and mechanical/ structural modifications. Dependent upon the specific rig characteristics, possible modifications could be:

❏ Location of mast termination panel for electrical service loop

❏ Extension of standpipe to 73'

❏ Replacement of rotary hose (75')

❏ Installation of AC drive electrical generator (new or upgrade)

❏ Derrick bundle with quick disconnects, or cable tray and cables

❏ Tie-back for torque reaction beam

❏ Crown pad eye for guide beam

❏ Location of tongs, pipe spinner, mud bucket and trigger lines

❏ Guide beam clearance to girts and fastline

❏ Location of casing stabbing board

All of the above modifications may not be necessary, but all must be considered as well as the overall rig floor layout in order to ensure that proper installation, time utilization and accurate cost information is made. One of many possible rig floor layouts is depicted below (reference only).

45

46

Dimensions are Typical and for Reference ONLY

Mast Termination Panel

@ 83' (25 M)

Standpipe Manifold

135' (41,1 M) Derrick Bundle

86 ft (26,2 M) Service Loop with Quick Disconnects

Deadline

Anchor

Winch

Bolted to Mast Leg

75' (3 M) Mud Hose

Rathole

@ 70' (21M) Level

Mousehole

TDS-11SA

Varco

Driller’s

Console

Setback Area

Winch

Spreader Beam

@10' (3 M) Level

15' (4,6 M)

*

This Length is for Masts/Derricks with Operating Height 147' and above.

Choke & Kill Manifold

3' (0,9 M)

Example TDS-11SA rig floor layout

The functional operation of a TDS-11SA has many considerations, a primary consideration is the mast/derrick height. The working height and crown clearance are two primary factors to finalize prior to ordering and installing your TDS-11SA. Working height and Crown clearance can both vary dependent upon hook, block, bail, elevator links, and coupling chosen. A typical

TDS-11SA mast interface is provided. A mast/derrick interface requirements and worksheet is provided in Section 6.

Existing Traveling Equipment

(500 ton Hook/Block Combo-Typ.)

*

**

Dimensions are Subject for

Verification

Standard TDS Configuration-

Two IBOP's with 108" Elev. Links.

Varco Portable

Top Drive System

TDS-11SA

Sectional Guide Beam

Service Loop Saddle

at ~80 Ft(24,4 M) Level*

75 ft(22,9 M) Mud Hose* Connected to Standpipe at 73 ft (22,3 M) Level

200 ft(61 M)* Unitized

Service Loop

Portable Torque Reaction Beam

2 Custom Spanners on"A- Frames or Mast Side Panels

Varco Driller's Control

150 ft (45,7 M) Control

Cable with Connectors

Unitized Variable Frequency

Inverter & Varco Control Panel

"Local Power Supply"

(Diesel/Alternator Set)

3X100 ft(3X30,5 M)

AC Cables

Typical TDS-11SA mast interface

Crown

13.5 ft(4,1 M)

Clearance**

Block Top

13.5 ft(4,1 M)*

Stroked-Typ.

Bail Rest

Tool Joint

18.0 ft(5,4 M)

TDS Work Height**

93 ft (28,4 M)

Drill Stand

Made-up at

4 ft (1,2 M)

Level

CL

Beam

Service Loop

Tool Joint

4.0 ft(1,2 M)

Drill Floor

47

48

Another key consideration in selecting and successfully operating a top drive is how well the top drive fits inside of the mast/derrick. Given the specific dimensions within the mast/derrick legs, the top drive and its guidance system need to utilize the complete working height.

Provided below is a detailed top view of the TDS-11SA.

18.90(480)

12.50(318)

3.20(81)

Guide Beam

Carriage Assembly

1.30(57)

8.07

(205)

Guide

Beam

34.0

(864)

30.0

(762)

Motor

13.90

(353)

56.5

(1435)

Ref

S/L

Brkt.

5.0

(127)

19.0

(274)

22.0

(559)

18.0

(457)

Gear

Case

Guard

Dimensions Are In

Inches (Millimeters)

CL

Motor

26.0(660)

36.9(937)

32.6(828)

15.75(400)

31.50(800)

10.63(270)

31.0(787)

Motor

52.0(1321)

8.56

(217)

S/L

Brkt.

S-Pipe

TDS-11SA Envelope/plan view

The TDS-11SA is shipped on a transportation skid with the PH-50 pipehandler connected. In the skid the top drive is attached to the upper section of the guide beam. Using the hook or a crane the TDS-11SA and skid is moved to the rig floor.

Hoist

Hook

Lifting

Sling

Bail Lock Assembly

Attach Lifting

Sling to Bail for

Hoisting

TDS-11SA in position prior to lifting from Skid

3

2

V Door

Ramp

1

Backup Line

Moving the TDS-11SA to the rig floor

49

50

Connecting the hook to the TDS-11SA bail and removing the lock pin allows for the unit to be separated from the transportation skid.

Skid

2

TDS-11SA lifted from Skid

Hoist

Lifting Block

1

TDS-11SA prior to lifting from Skid

Skid

(After removing TDS-11SA)

3

Removing the TDS-11SA from the skid

Following the directions provided in the TDS-11SA service manual allows for easy connection and locking-in of the remainder of the guide beam section and the attachment to the upper support brackets.

❏

Hoist and Lower Top Drive Unit with Upper Guide Beam Section to Drill Floor with Traveling

Block

Guide Beam

Connecting

Link

❏

Bring Second Guide Beam Section to Drill Floor and Hook to First Section

Tugger Line

TDS-11SA

Power Train

(Carriage

Stops

Disengaged)

Pinned Guide

Beam Sections

1

Guide Beam

(Assembled)

Carriage Stops

(Engaged)

❏

Raise Power Train and Guide Beam

(Two Sections) with Traveling

Block, Stab at Drill Floor and Pin

Guide Beam Sections

❏

Bring Next Guide Beam Section to Drill Floor and Hook to Bottom of Lower Guide Beam Section

Lower

Attachment and Spreader

Beam

❏

Repeat Above Procedures to

Complete Guide Beam Assembly

❏

Attach Upper Guide Beam Section to Connecting Link

❏

Lower Traveling Block Slightly to Disengage Guide Beam Stops

❏

Pin Lower Attachment to Spreader Beam

2

Guide beam rig-up

3

51

52

Flange

Clamps

Once the guide beam is secured at the top, the lower end of the guide beam is attached to the spreader beam and tied back to the mast/derrick. Proper attachment and tieback is vital to the transmission of the system torque to the rig structure.

A

40-90"(1016-2860 mm)

Straps

(2 @ Side)

30"(762 mm)

Tieback Link

Angle Shims

(Weld as necessary)

A

Spreader Beam attached directly to Mast Leg

Straps

(2 @ Side)

TDS Guide Beam

Beam 15'(4572 mm) Long-Typ.

View

A-A

Mast Leg Mast Leg

Straps

(4 @ Side)

Straps

(2 @ Side)

Flange

Clamps

Beam 15'(4572 mm)

Long-Typ.

Guide beam lower attachment detail

Additionally, if hoisting a load that is greater than the capacity of the top drive is necessary, the tieback is constructed to allow for the top drive and guide beam to be pulled away from well center.

Sectional

Guide Beam

TDS-11SA

Setback Procedure

1.

Set Carriage Latch in

Setdown Position, Lower

Unit to Stops on Guide

Beam and Raise Hook.

2.

Remove 4 (Four)

Holddown Bolts.

3.

Pull Tieback Assembly to the Side with Air Hoist to Setback the Entire

Unit and Secure It.

Existing Traveling

Equipment (500Ton

Hook/Block-Typical)

Top Drive Unit in

Tieback Position

Varco Portable

Top Drive System

TDS-11SA

Torque

Reaction

Beam

36" (944)

Min

Air Hoist

TDS-11SA Tieback

53

Additional unit subsystem checkouts and precautions are provided in the TDS-11SA Service

Manual—all of which must be followed to ensure proper functionality of the TDS-11SA unit.

The illustration below shows a typical standard package for a portable TDS-11SA unit.

Mast Service Loop Saddle

(Bolted to Mast Leg)

54

Power Unit

Connectors

Top Drive

Connectors

PH-50

Pipehandler

Varco Driller’s Control (VDC)

Drive Train with Carriage

Sectional

Guide Beam with Pins and

Attachments

Univ ersal

Torque Reaction Spreader Beam

Unitized Variable Frequency Inverter (FVD) and Varco Control Panel (VCP)

Typical TDS-11SA portable package

Specifications

Section 5

General

Transmission

Transmission lube

Powered rotating head

System Weight

10.5:1 double reduction helical gear

Constant speed pump, force fed, filtered, and air cooled

Infinitely positionable

24,000 lb (10886 kg)

Drilling parameters (800 hp)

Drilling speed range 0 to 228 rpm continuous

Drilling torque

Drilling horsepower

Static locking brake

37,500 ft lb maximum continuous (50842 N•m)

800 maximum continuous

39,000 ft lb (52878 N•m)

Drilling parameters (700 hp)

Drilling speed range 0 to 228 rpm continuous

Drilling torque

Drilling horsepower

32,500 ft lb maximum continuous (44050 N•m)

700 maximum continuous

Static locking brake 39,000 ft lb (52878 N•m)

High speed available (800 hp and 700 hp)

Drilling speed range 0 to 500 rpm continuous

55

56

Rated capacities

Hoisting

Drilling (rotating)

Water course (main shaft bore)

500 Tons, API-8C, PSL-1, SR-1

500 Tons, API

5,000 psi CWP (3.0 inch)

Drilling motors (two 400 hp AC motors)

Type Reliance Electric, AC induction, forced air cooled.

Rating

Rated speed

400 hp each (800 hp total)

1,200 rpm

Maximum speed

Maximum continuous torque

Maximum intermittent torque

2,400 rpm

1,800 ft lb each

2,600 ft lb each

Drilling motors (two 350 hp AC motors)

Type Reliance Electric, AC induction, forced air cooled.

Rating

Rated speed

Maximum speed

Maximum continuous torque

Maximum intermittent torque

350 hp each (700 hp total)

1,200 rpm

2,400 rpm

1,550 ft lb each

2,288 ft lb each

Pipehandler (PH-50)

Torque capacity 55,000 ft lb (67800 N•m) @ 2,000 psi

Drill pipe range (O.D)

Upper IBOP (remote)

Lower IBOP (manual)

IBOP pressure rating

Elevator links

3-1/2" through 5" (89 to 127 mm)

6-5/8" API Reg. RH, Box and Pin

6-5/8" API Reg . RH, Box and Pin

15,000 psi CWP

350 Tons or 500 Tons, API

Appendix

Section 6

57

58

TRAIN MOTOR

PROTOTYPE

TDS-1

1981

TDS-2

DESIGN ONLY

INTERIM

SOLUTION

TDS-5

1983 TDS-3

SINGLE SPEED

5.33:1

BECAME THE

INDUSTRY STANDARD

1988

SINGLE

SPEED

6.67:1

1989

TWO SPEED

7.95/5.08:1

TDS-4

THE NEW

STANDARD

TDS-3H

TDS-4H

NEW HIGH TORQUE

MOTORS

1990

TDS-3S TDS-4S

INTEGRATED

SWIVEL

TDS-6S

FIRST TWO DC

MOTOR DRIVE

5.33:1, 2,200 HP

TDS-6SB

1991

INTEGRATED

SWIVEL & BLOCK

TWO DC MOTOR

DRIVE

1993

FIRST AC

MOTOR DRIVE

5.3 : 1, 990 HP

TDS-7S

TDS-8SA

9.0:1, 1,150 HP

AC MOTOR DRIVE

TDS-3SAC TDS-4SAC

1,150 HP AC TOP DRIVES (UPGRADES)

IDS-1

1994

TDS-9SA

1996

TDS-10SA

1997

TDS-11SA

INTEGRATED

SWIVEL & BLOCK

6.0:1, 1,150 HP

DC PLANETARY

DRIVE

10.5:1, 700 HP

400 Ton, FIRST

TWO AC MOTOR

DRIVE

13.1:1-Std. or

4.8:1-Opt., 350 HP

250 Ton AC DRIVE

10.5:1, 700 or 800 HP

500 Ton TWO

AC MOTOR DRIVE

Varco’s Top Drive Drilling Systems development

TDS-10S

250 Ton System

350 HP AC Motor

Output Torque

20,000 ft-lbs

IDS-1

500 Ton System

1,000 HP DC Motor

Output Torque

34,000 ft-lbs

TDS-11SA

500 Ton System

2x350 or 2x400 HP AC Motors

Output Torque

32,500 or 37,500 ft-lbs

Bail Rest

Bail Rest

Bail Rest

15.0 ft

(4,6 m)

TDS-10S

Working

Height

Tool Joint

23.0 ft

(7,0 m)

IDS-1

Working

Height

18.0 ft

(5,5 m)

TDS-11SA

Working

Height

Tool Joint

Varco’s Top Drive Drilling Systems comparison

Tool Joint

Drill Floor

59

60

Dual AC Motor Top Drive TDS-11SA

2 x 350 = 700 HP or 2 x 400 = 800 HP

500 Ton System, 10.5:1 Transmission

55,000

50,000

45,000

40,000

35,000

30,000

800 HP

700 HP

25,000

20,000

15,000

10,000

5,000

0

0 25 50 75 100 125 150

Drill Pipe RPM

175 200 225 250

TDS-11SA Output curve

Block

(If Used)

Saddle

Hook

(If Used)

Saddle

Swivel

(If Used)

Stem Shldr.

Drilling

System

Block Top

Hook-Block

Combination

Saddle

S-Type

Drilling

System

(Integrated

Swivel)

Integrated

Drilling

System IDS

(Integrated

Block and

Swivel)

Tool Joint

To short-couple a Swivel Bail/Top Drive to a Traveling Block VARCO offers special

Adapters with 3 – 4 ft working height

* Includes 750 Ton Hook Adapter

** With 500 Ton 60-in Sheave Varco Integrated

Taveling Block

TRAVELING

EQUIPMENT

TRAVELING

BLOCKS

HOOK-BLOCK

COMBOS

(stroked 8")

HOOKS

(stroked 8")

SWIVELS

MAKE

DRECO

IDECO

CECO

McKISSICK

MH

PYRAMID

OILWELL

IDECO

CECO

MODEL

660B-500

760B-650

760B-750

650H500

NATIONAL

660H500

760H650

OILWELL

H350

B500

650

A750

TB525-6-60

TB650-6-60

TB750-7-60

RA52-6-500

RA60-6-650

RA60-7-750

500

650

500-1195

650-1090

500

650/750

WORKING HEIGHT WEIGHT (EST)

in

92

105

109

91

109

112

77 ft

7.6

8.7

9.0

mm lbs

2324 18500

2654 23800

2756 27500 kg

8391

10795

12474

7.5

2299 13500 6266

9.0

2756 18750 8509

9.3

2832 21800 9888

6.4

1956 9380 4255

100

104

8.3

2543 17900 8119

8.6

2629 20240 9181

120 10.4

3210 34016 15429

105 8.8

2670 18200 8255

110

113

92

103

110

9.2

9.4

2794 20500

2873 22100

9299

10024

7.7

2337 13250 6010

8.6

2621 19158 8690

9.2

2794 22871 10374

91

109

92

105

104

103

7.6

9.1

2315 21500

2769 22590

9752

10246

7.7

2340 21546 10000

8.7

2664 26932 12500

8.7

2648 22000 9979

8.5

2604 27000 12247

NATIONAL

540G250

545G350

650G500

660G500

760G650

137 11.4

3480 11600 5262

152 12.6

3861 15260 6922

169 14.1

4293 21250 9639

184 15.3

4674 26500 12020

192 16.0

4883 31780 14415

IDECO

VARCO BJ

UTB 525-6-60 181 15.1

4607 9000 4082

5250

5350

104

106

8.7

8.8

2642

2692

5050

6340

2291

2876

5500

5750

51000

117

138

158

9.8

11.5

13.2

2981 9950

3493 18090

4035 32076

4513

8205

14550

97

103

8.1

2457 6920 3138

8.6

2623 8550 3872

500

NATIONAL

650

750

WEB WILS. 500

500

MH

650/750

P500

NATIONAL

P650

P750

113

120

112

138

92

94

116

9.4

10.0

9.3

11.5

7.7

2873

3048

2845 11850

3508 18745

2343

9750

8500

5700

4423

3856

5500

8700

2585

7.8

2375 6900 3130

9.6

2937 11500 5216

PC500

PC650

TL-500

TL-650

TL-750

LB500

LB650

SW550

94

96

91

101

114

91

99

94

7.8

2388 5708 2589

8.0

2438 7350 3334

7.6

2311 5200 2359

8.4

2562 6900 3130

9.5

2899 8200 3719

7.6

2311 5947 2698

8.2

2505 6646 3015

7.8

2381 5700 2585

G.-DENVER S500

S650

DRECO

500

650

750

98

101

102

109

119

8.1

2486 5800 2631

8.4

2570 6850 3107

8.5

2578 6100 2767

9.1

2769 7000 3175

9.9

3001 9100 4128

VARCO

TOP DRIVES

TDS-3H

TDS-3S

214 17.8

5436 32600 14800

250 20.8

6350 36750 16685

TDS-4H

TDS-4S

221 18.4

5613 37000 16798

250 20.8

6350 38750 17593

TDS-5H

214 17.8

5436 35200 15981

TDS-6S

TDS-7SA

*

276 23.0

7010 43750 19826

250 20.8

6350 49000 22742

TDS-8SA

250 20.8

6350 37750

17520

TDS-9SA 214 17.8

5425 24000 10886

TDS-10SA 192 16.0

4877 18000 8164

IDS-11SA

IDS-1

216 18.0

5486 25250 11453

**

346 28.8

8788 49000 22742

Top drive worksheet

61

62

Customer:

..........................................

..........................................

Existing

Traveling Equipment:

...........................................

...........................................

Traveling Equipment

Short-Coupling using

Varco Adapter/Becket

(if applicable):

............................................

............................................

............................................

Varco Driller's Interface

AC Inverter

Crown

Block Top

..................

Clearance

Bail Rest

..................

(Stroked)

18.0 ft

TDS Working Height

Tool Joint

Service

Loop/Mast

Bundle

Saddle

@..........ft

.............ft

Mud Hose,

Standpipe

@..........ft

Sectional

Guide Beam

.............ft

Mast

Bundle

.............ft

Beam

Tool Joint

4 ft

Drill Floor

TDS-11SA Mast interface worksheet (generic)

63

64