Coring bit with uncoupled sleeve

Details Coring bit with uncoupled sleeve Coring bit with uncoupled sleeve

E - Fixed Constructions

21

B

E21B 49/06 (2006.01) E21B 10/02 (2006.01) E21B 25/02 (2006.01)

Patent

CA 2455437

A coring bit, including an outer hollow coring shaft, and a rotationally uncoupled internal sleeve disposed inside the outer hollow coring shaft. The rotationally uncoupled internal sleeve may be a non-rotating internal sleeve. The rotationally uncoupled internal sleeve may be a free- floating internal sleeve.

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