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Torque Reduction Sub (TRS)

www.paradigm.eu 2013 Paradigm Drilling Services Ltd. All rights reserved.

The Torque & Vibration Reduction (TRS) subs have been designed by Paradigm Drilling Services as a

solution to the problem of excessive torque encountered in short radius high build section horizontal

and high angle wells. The TRS is an integral drill string component consisting of a short one piece

mandrel utilising proprietary bearing technology to support a non rotating one piece sleeve. Tools can be

positioned between the connections of the drill pipe, spaced one every stand, to cover the build section of

the wellbore.

The use of these tools can reduce drilling torque by signicant amounts (25-35%) and is also effective at

reducing string transmitted vibration.

Applications

The TRSs are designed to reduce parasitic torque in high

angle and horizontal wells. They can also protect casing whenused for Through Tubing Rotary Drilling (TTRD). Paradigm

utilises Sysdrilland when provided with the proposed well

trajectory can optimise numbers and placement of TRSs.

Features & Benets

Reduces drill string wear and fatigue

Minimizes torque and drag Minimizes casing wear

Increases ROP

Dampens vibration

Enhances drilling efciency

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Torque Reduction Sub (TRS)

www.paradigm.eu 2013 Paradigm Drilling Services Ltd. All rights reserved.

Technical information

Tool size Connection Body O.D. Body I.D. Sleeve O.D. Tool length(SH-SH)

3-1/2 3-1/2 API I.F. (NC38) 5.40 2.44 5.795 43

4 4-1/2 API (NC46) 5.70 2.50 6.003 43

5 4-12 API I.F. (NC5O) 6.50 3.00 7.831 43

5-1/2 5-1/2 API FH 7.00 3.25 8.526 43

NOTE:Other sizes are available upon request. Above sizes may change on customer request.

N.B. The tools shown here are patented or have patent pending

Thrust Bearing

Mandrel

Thrust Bearing

End Collar

Split Sleeves

Split Sleeves

Outer Sleeve

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