Wells – Processes – Placing or shifting well part
Patent
1985-01-22
1987-05-19
Novosad, Stephen J.
Wells
Processes
Placing or shifting well part
166122, E21B 2306
Patent
active
046659927
ABSTRACT:
Remote control of hydraulically set packers is achieved by incorporating a hydraulic energy accumulator into a well tubing string. A hydraulic line connecting the accumulator with the packers setting mechanism is blocked by a shearable plug connected between the accumulator body and a movable control sleeve. In one embodiment, upward force exerted on the cable of a shifting tool latched into the control sleeve causes the plug to shear and pressure from the accumulator to set the packers. In another, the plug is sheared by movement of the sleeve through contact with a pressure differential sensitive piston that shifts in response to an increase in annular pressure.
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Neider William P.
Novosad Stephen J.
Schlumberger Technology Corporation
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