Pipe disconnecting apparatus

Details Pipe disconnecting apparatus Pipe disconnecting apparatus

1974-05-06

1976-05-18

Leppink, James A.

Wells

Above ground apparatus

With means facilitating connecting or disconnecting...

81 54, 81 5733, E21B 3303, B25B 1700

Patent

active

039571130

ABSTRACT:
Apparatus for disconnecting the lower threaded end of an upper section from the upper threaded end of a lower section of pipe string extending through the bore of an underwater wellhead.

REFERENCES:
patent: 1955727 (1934-04-01), Adams
patent: 2961904 (1960-11-01), Sergan
patent: 3021739 (1962-02-01), Grandmann
patent: 3293959 (1966-12-01), Kennard

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