Wells – Processes – With indicating – testing – measuring or locating
Patent
1989-06-01
1990-05-08
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166 53, 166 551, 166 552, 137 14, 137572, E21B 2908, E21B 3306, F16K 31122, F17D 301
Patent
active
049230085
ABSTRACT:
A hydraulic system and method are provided for supplying high pressure hydraulic fluid to a cylinder for operating a ram, e.g. a shearing and/or shut-off ram for a blowout preventer. It comprises means for supplying high pressure hydraulic fluid to the cylinder, said hydraulic fluid supply means comprising first and second storage means for storing hydraulic fluid under pressure, first conduit means for supplying hydraulic fluid under pressure from said first storage means to the cylinder, a pressure sensing device for determining the back pressure in said first conduit means, second conduit means for supplying hydraulic fluid under pressure from said second storage means to the cylinder and valve means for automatically opening said second conduit means when the back pressure in the first conduit means reaches a predetermined amount.
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Downie R. James
Wachowicz Stanley W.
Baroid Technology Inc.
Novosad Stephen J.
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