Valve

Details Valve Valve

1979-07-02

1981-07-28

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

166316, 251297, 251319, E21B 4312

Patent

active

042805619

ABSTRACT:
A sleeve valve which may be made up as a part of a tubing string in which the valve member has two positions. Dogs carried by the valve member alternately cooperate with spaced grooves in the body in said positions. The dogs are alternately engageable by a shifting tool to shift the valve member in opposite directions and after the valve member has been shifted, the dogs are disengaged from the shifting tool. The valve is disclosed as a part of a testing system employing a circulating tool, a cushion valve, a seal unit, and a landing nipple with a transducer fitting.

REFERENCES:
patent: 2380022 (1945-07-01), Burt
patent: 3100537 (1963-08-01), Crowe
patent: 3306365 (1967-02-01), Kammerer, Jr.
patent: 3768562 (1973-10-01), Baker
patent: 4176717 (1979-12-01), Hix

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