Patent ID: 6289986
Filing Date: 2001-09-18
Classification: E21B,F16D

Abstract:
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 comprising:(i) a central housing having a generally hollow interior;(ii) a drive shaft received within said central housing, said drive shaft operatively connectable to a pump rod rotation means to impart rotational movement to said drive shaft;(iii) a drive rod received within said central housing, said drive rod operatively connectable to a downhole pump so as to enable transference of rotational energy from said drive rod to the downhole pump; and,(iv) torque transfer means positioned within said central housing, said torque transfer means having an engaged position wherein said torque transfer means operatively connects said drive shaft to said drive rod such that rotation of said drive shaft causes rotation of said drive rod, said torque transfer means having a disengaged position wherein said torque transfer means operatively disconnects said drive shaft from said drive rod, when in said disengaged position said torque transfer means permitting rotation of said drive rod relative to said drive shaft and a release of torque exerted on said drive rod.