Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2007-04-10
2007-04-10
Gay, Jennifer H (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S053000, C166S068000, C166S177200, C166S250010, C175S040000, C073S152220, C073S152510, C367S083000, C340S853300, C340S856400
Reexamination Certificate
active
10639133
ABSTRACT:
The apparatus includes a pump for circulating pressurized fluid in a wellbore. A control device controls the pump which a conduit interconnects to the wellbore. A downhole transducer detects changes in fluid pressure at a downhole location and generates signals accordingly. A processor generates actuator commands based on the signals. Actuators activate a downhole tool based on the actuator command. A modulating valve modulates the fluid pressure. A remote transducer detects the pressure remotely from the downhole transducer. The control device causes the pump to generate acoustic signals in the fluid via wave forms which the downhole transducer detects. The modulating valve generates wave forms in the fluid. The control device sends control signals via the fluid to the downhole transducer. Consequently the processor actuates the tools. Following correct actuation the modulating valve generates signals via pressure changes which the remote transducer receives to indicate successful tool deployment.
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Chaplin Michael John
Easter Charles Richard
Spencer Michael Charles
Gay Jennifer H
Paul & Paul
Reeves Wireline Technologies Limited
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