Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1980-06-13
1983-04-05
Pate, III, William F.
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166321, 166250, 166336, 175 93, E21B 3464
Patent
active
043788505
ABSTRACT:
A hydraulic fluid supply apparatus for a downhole tool includes a first annular zone adapted to be filled with hydraulic oil and a second annular zone adapted to be filled with a pressurized second fluid. The first and second zones are separated by a floating annular piston for transmitting fluid pressure from the second zone to the first zone. A control valve is connected between the first zone and a hydraulically powered component of the downhole tool for directing hydraulic fluid under pressure from the first zone to the hydraulically powered component of the downhole tool.
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Beavers Lucian Wayne
Halliburton Company
Pate III William F.
Walkowski Joseph A.
Weaver Thomas R.
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