Well bore communication method

Details Well bore communication method Well bore communication method

1976-03-19

1977-11-08

Birmiel, Howard A.

Communications: electrical

Selective

Interrogation response

340 18R, G01V 140

Patent

active

040577813

ABSTRACT:
Logging while drilling apparatus included in a rotatable drilling string of drill pipe disposed in a well bore. Apparatus generally includes a combination communication system comprising two communication channels coacting in cascade or tandem fashion with a first lower communication channel having very low attenuation characteristics but being relatively inconvenient to connect or disconnect and with a second upper communication channel having greater attenuation characteristics but being very convenient to connect or disconnect when adding drill pipe as drilling continues. Electrical power for the entire combination in the well bore is provided from a location remote from the bottom of the well. Also discloses related methods of logging while drilling.

REFERENCES:
patent: 3186222 (1965-06-01), Martin
patent: 3315224 (1967-04-01), Ferguson
patent: 3408561 (1968-10-01), Redwine et al.
patent: 3732728 (1973-05-01), Fitzpatrick
patent: 3737845 (1973-06-01), Maroney et al.
patent: 3949354 (1976-04-01), Claycomb
patent: 4001774 (1977-01-01), Dawson et al.

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