Wells – With below and above ground modification – Above ground actuating means for below ground device
Patent
1986-04-07
1987-08-18
Novosad, Stephen J.
Wells
With below and above ground modification
Above ground actuating means for below ground device
166183, 166324, 166334, E21B 3410
Patent
active
046870555
ABSTRACT:
A wire-line controlled down-hole shut-in tool for wells incorporates a mandrel adapted for connection in a tubing string. A shut-in valve mechanism within the mandrel is opened and maintained in its open position by a sectioned flow tube assembly and is permitted to close upon linear retraction of the flow tube thus causing temporary shut-in of the well such as for purposes of inspecting formation pressure. The shut-in tool mechanism incorporates a pressure equalization system which is controlled by downward linear movement of the flow tube assembly for establishing a pressure balanced condition at the shut-in valve to permit opening of the valve without excessive force. Pressure balancing with the shut-in valve in its closed position is achieved by control of pressure equalization valves in response to actuation of a lost-motion connection between upper and lower sections of the elongated flow tube assembly.
REFERENCES:
patent: 2964942 (1960-12-01), Reed
patent: 3078923 (1963-02-01), Tausch
patent: 3860066 (1975-01-01), Pearce
patent: 4031955 (1977-06-01), Ledet
patent: 4105279 (1978-08-01), Glotin et al.
patent: 4325431 (1982-04-01), Akkerman
patent: 4340088 (1982-07-01), Geisow
patent: 4386531 (1983-06-01), Heimgartner et al.
patent: 4407363 (1983-10-01), Akkerman
patent: 4434847 (1984-03-01), Vasquez et al.
patent: 4454913 (1984-06-01), Guidry e al.
patent: 4483397 (1984-11-01), Gray
patent: 4524831 (1985-06-01), Pringle
patent: 4527631 (1985-07-01), Vasquez
patent: 4557333 (1985-12-01), Beck
Flopetrol Johnston, "MUST"-Universal DST Real Time Surface Pressure Read Out.
Melius Terry Lee
Novosad Stephen J.
LandOfFree
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