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

1982-09-24

1984-11-20

Purser, Ernest R.

Wells

With electrical means

G01V 320

Patent

active

044833938

ABSTRACT:
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.

REFERENCES:
patent: 2568241 (1951-09-01), Martin
patent: 3072843 (1963-01-01), Clements
patent: 3388325 (1968-06-01), Birdwell
patent: 4286217 (1981-08-01), Planche
patent: 4356629 (1982-11-01), Jeter

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