US 11,753,888 B2
Biased control unit
Nikolas Lohi, Stonehouse (GB); Paul Michael Linford, Stonehouse (GB); Abdiwahid Alasow, Stonehouse (GB); Juho Pekka Piiparinen, Stonehouse (GB); and Alexander Hickson, Stonehouse (GB)
Appl. No. 17/595,389
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed May 7, 2020, PCT No. PCT/US2020/031755
§ 371(c)(1), (2) Date Nov. 16, 2021,
PCT Pub. No. WO2020/236430, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/850,680, filed on May 21, 2019.
Prior Publication US 2022/0205330 A1, Jun. 30, 2022
Int. Cl. E21B 23/04 (2006.01)
CPC E21B 23/0416 (2020.05) 13 Claims
OG exemplary drawing
1. A control unit comprising:
a spindle;
a tubular body rotatable relative to the spindle, the tubular body including a plurality of fins;
a torque transfer unit having a first member attached to the spindle and a second member attached to the tubular body, the first member having a first bearing surface and the second member having a second bearing surface, the first bearing surface and the second bearing surface contacting each other with a friction force; and
a torque generator configured to apply a torque to the spindle.