Logging while raising a drill string

Details Logging while raising a drill string Logging while raising a drill string

1979-01-08

1980-10-07

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4900

Patent

active

042261163

ABSTRACT:
In logging a well substantially as soon as it is drilled, at least one measuring transducer and a transducer-moving system are mounted within a lower portion of a segmented electrically-conductive drill string. At least one downhole transducer is moved in response to an electrical command and is held near or against the borehole wall while the drill string is raised and a recording is made of electrical signals indicative of both the downhole transducer measurements and the distance the drill string is raised.

REFERENCES:
patent: 3795141 (1974-03-01), Planche
patent: 4056004 (1977-11-01), Roesner

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