Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1980-10-07
1983-02-08
Pate, III, William F.
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166330, C21B 3412
Patent
active
043723918
ABSTRACT:
A screw operated emergency release and safety valve includes a valve housing having a flow passage therethrough and adapted to be connected to a lower portion of a tubing string. A full opening ball valve is disposed in the valve housing for opening and closing the flow passage. A stinger assembly is adapted to be connected to an upper portion of the tubing string, and includes a stinger mandrel releasably telescopingly received within the valve housing. An actuating mandrel assembly is operably associated with the stinger mandrel and connected to the ball valve and is movable between first and second positions for opening and closing the ball valve in response to manipulation of the upper portion of the tubing string. A threaded connecting collar releasably interconnects the valve housing and the stinger assembly. The valve housing, ball valve, stinger assembly, actuating mandrel assembly and threaded connecting collar are so arranged and constructed that, when disconnecting the threaded connecting collar, a first predetermined number of rotations of the stinger assembly in a right-hand direction relative to the valve housing causes the actuating mandrel assembly to move to its said second position thereby closing the ball valve, and an additional predetermined number of rotations of the stinger assembly in the right-hand direction relative to the valve housing is necessary to release the stinger assembly from the valve housing. Methods of use are also disclosed.
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Halliburton Drawing TC-013-0023-02, dated Dec. 31, 1978.
Halliburton Services Sales and Service Catalog No. 40, p. 3485.
Halliburton Drawing TC-013-0001-45, dated Dec. 31, 1978.
Halliburton Services Sales and Service Catalog No. 40, p. 3484.
Otis Engineering Corp. Catalog OEC-5134C, at pp. 10-15.
Brochure of Flopetrol Division of Schlumberger entitled "Deep Water Operation System".
Barrington Burchus Q.
Clayton Wilbur P.
Jackson Gerald D.
Beavers Lucian Wayne
Halliburton Company
Pate III William F.
Walkowski Joseph A.
Weaver Thomas R.
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