Well logging apparatus and method for making same

Details Well logging apparatus and method for making same Well logging apparatus and method for making same

E - Fixed Constructions

21

B

255/1, 26/111

E21B 47/02 (2006.01) E21B 17/00 (2006.01) E21B 47/12 (2006.01) E21B 49/00 (2006.01) G01V 3/20 (2006.01)

Patent

CA 1190918

Abstract of the Disclosure A replaceable insulating sleeve is disposed around the lower end of a drill string used in drilling a well. The sleeve is restrained from rotating relative to the drill string, but can be released and quickly slipped off the drill string in the field to permit rapid replacement if damaged, or if alternate equipment is required. The sleeve carries sensing means for measuring a characteristic of formations penetrated by the well. Anchor means on the sensing means prevents it from rotating relative to the sleeve.

437200

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