Downhole fluid pumping apparatus and method

Details Downhole fluid pumping apparatus and method Downhole fluid pumping apparatus and method

E - Fixed Constructions

21

B

E21B 49/00 (2006.01) E21B 34/10 (2006.01) E21B 47/01 (2006.01) E21B 49/08 (2006.01)

Patent

CA 2488475

A downhole fluid pump including a pump chamber, and a piston disposed in the pump chamber so that the piston will move in one selected from a charge stroke and a discharge stroke when the piston is exposed to a differential pressure. The downhole fluid pump may form part of a formation evaluation while drilling tool.

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