Surface driven well pump

Details Surface driven well pump Surface driven well pump

E - Fixed Constructions

21

B

E21B 43/16 (2006.01) F04D 1/00 (2006.01) F04D 1/06 (2006.01) F04D 13/10 (2006.01) F04D 29/20 (2006.01) F04D 29/66 (2006.01)

Patent

CA 2478733

Oil is recovered from a borehole using a pump using a surface driven high rotary speed pump. In one aspect, the pump is a centrifugal pump, operated at speeds in excess of 3400 rpm. The pump is located in a downhole positions within a production zone of a wellbore. A drive rod extends from a wellhead, downwardly through the wellbore, where it is received in engagement with the impeller of the pump. A dampening element is disposed in conjunction with the rod to reduce the physical excursion of the rod and thus enable high-speed rotation of the rod with minimal risk of excursion related failure of the rod or wellbore.

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