E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 25/00 (2006.01) E21B 4/04 (2006.01) E21B 4/18 (2006.01) E21B 44/00 (2006.01) E21B 49/06 (2006.01)
Patent
CA 2356576
The present invention provides an improved coring motor for use in obtaining a core sample from the side wall of a drilled bore hole. The present invention provides controllable rotation, extension and retraction of the coring bit relative to the side wall without complicated positioning linkages and with conservation of space for use in slim tools for use downhole.
Contreras Gary W.
Harrigan Edward
Hill Bunker M.
Lauppe Dean W.
Sundquist Robert W.
Schlumberger Canada Limited
Smart & Biggar
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