Valve and lubricator apparatus

Details Valve and lubricator apparatus Valve and lubricator apparatus

1976-10-15

1977-12-13

Leppink, James A.

Wells

Valves, closures or changeable restrictors

Fluid operated

E21B 4312

Patent

active

040624064

ABSTRACT:
A valve and lubricator apparatus are provided for installation of tools on wire line and the like for use in an oil or gas well while controlling fluids therethrough. The apparatus has valve means having a passageway therethrough for control of fluids through the apparatus. First fluid activatable means are provided for first shifting of the valve means to closed position. Second fluid activatable means also are provided for second shifting of the valve means to the open position. Means for locking the valve in closed position are provided to prevent shifting of the valve to open position by operation of the first fluid means. The second fluid means are operational to unlock the valve means from the closed and locked positions and to shift the valve to open position. The first and second fluid means and the locking means are repeatably and sequentially operational.

REFERENCES:
patent: 3696868 (1972-10-01), Taylor, Jr.
patent: 3783942 (1974-01-01), Mott
patent: 3886967 (1975-06-01), Nelson

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