Drill pipe sections

Details Drill pipe sections Drill pipe sections

1982-05-20

1985-01-29

McQuade, John

Geometrical instruments

339 16RC, H01R 1530

Patent

active

044962037

ABSTRACT:
A drill pipe section enables electrical information signals to be transmitted along a borehole to feed information generated by instruments situated adjacent to the drilling bit along the drill string to monitoring and/indication equipment situated adjacent to the drilling machine. The section comprises a generally cylindrical housing member and a liner member fixedly mounted inside the housing member with an air gap defined between the two members. An electrically conductive element extends between two electrically conductive, annular coupling components one of which defines a radially inwardly directed coupling margin and the other of which defines a radially outwardly directed coupling margin.

REFERENCES:
patent: 3696332 (1972-10-01), Dickson, Jr. et al.
patent: 3879097 (1975-04-01), Oertle
patent: 4095865 (1978-06-01), Denison et al.
patent: 4220381 (1980-09-01), Van der Graaf

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