Pumping sub for well logging tools

Details Pumping sub for well logging tools Pumping sub for well logging tools

E - Fixed Constructions

21

B

E21B 33/127 (2006.01) E21B 23/10 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2329697

The pumping sub comprises first and second inflatable bladders which are pressurized to inflate to accommodate various pipe diameters. Pressure relief value means is provided to assist is clearing obstructions within the pipe. The pumping sub acts as a parachute to slow the fall of a logging tool and enables the logging tool to be pumped up and down a drill pipe.

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