Pipe joint separation

Details Pipe joint separation Pipe joint separation

1981-01-28

1983-08-02

Novosad, Stephen J.

Wells

Processes

Freeing stuck object, grappling or fishing in well

166 65R, 166178, E21B 3100, E21B 31107

Patent

active

043960650

ABSTRACT:
A shock wave, e.g., from a short time electric arc, is used instead of any explosives to loosen a screw connection between two pipes.

REFERENCES:
patent: 2305261 (1942-12-01), Kinley
patent: 2407991 (1946-09-01), McCullough
patent: 2730176 (1956-01-01), Herbold
patent: 2972380 (1961-02-01), Bodine, Jr.
patent: 3142901 (1964-08-01), Bodine
patent: 3152642 (1964-10-01), Bodine, Jr.
patent: 3168140 (1965-02-01), Bodine, Jr.
patent: 3180418 (1965-04-01), MacLeod
patent: 3189092 (1965-06-01), Bodine, Jr.
patent: 3199594 (1965-08-01), Kinley
patent: 3399724 (1968-09-01), Brooks
patent: 4074758 (1978-02-01), Scott
patent: 4343356 (1982-08-01), Riggs et al.
E. D. Riggs et al., "New Sonic Shock Tool Removes Well Bore Barriers", Pet. Eng., Sep. 1975, pp. 68, 72 and 74.

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