Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1977-09-19
1979-07-31
Weakley, Harold W.
Fluid handling
Systems
Flow path with serial valves and/or closures
251344, 251347, 251348, 166301, 166312, 166323, F16K 1110
Patent
active
041626915
ABSTRACT:
Valve apparatus may comprise a first tubular member; a second tubular member telescopically engaging the first tubular member for axial movement between a retracted position and an extended position, the first and second tubular members forming flow passage through which fluid communication may be established between the opposite ends of the apparatus; ports through the walls of one of the tubular members by which fluid communication may be established between the flow passage and the exterior of the valve apparatus; and a closure assembly carried by one of the tubular members for selectively opening and closing the ports to permit or prevent fluid communication with the exterior of the apparatus. Methods of using the valve apparatus in remedial oil and/or gas well operations are also disclosed.
REFERENCES:
patent: 2344121 (1944-03-01), Bassinger
patent: 3094306 (1963-06-01), Conrad
patent: 3376936 (1966-04-01), Tomlin
Berryhill Bill B.
Kajan Specialty Co., Inc.
Weakley Harold W.
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