Pump rod drive and torque release mechanism

Details Pump rod drive and torque release mechanism Pump rod drive and torque release mechanism

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/02 (2006.01) E21B 43/12 (2006.01) F16D 11/04 (2006.01)

Patent

CA 2337976

A pump rod drive and torque release mechanism for use in association with a downhole pump positioned within a well. The pump rod drive and torque release mechanism comprises a central housing having a generally hollow interior, a drive shaft received within the central housing, a drive rod received within the central housing, and a torque transfer mechanism positioned within the central housing. The drive shaft may be operatively connected to a pump rod rotator to impart rotational movement to the drive shaft. The drive rod may be operatively connected to a downhole pump so as to enable transference of rotational energy from the drive rod to the downhole pump. The torque transfer mechanism has an engaged position wherein it operatively connects the drive shaft to the drive rod such that rotation of the drive shaft causes rotation of the drive rod. The torque transfer mechanism also has a disengaged position wherein it operatively disconnects the drive shaft from the drive rod. When it is in its disengaged position, the torque transfer mechanism permits rotation of the drive rod relative to the drive shaft and a release of torque exerted on the drive rod by fluid present in the well above and bearing against the downhole pump.

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