Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2006-10-18
2010-06-08
Thompson, Kenneth (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S066700, C166S319000, C166S386000, C166S332300
Reexamination Certificate
active
07730954
ABSTRACT:
A hydraulic control and actuation system for downhole tools. In a described embodiment, a hydraulic control and actuation system includes an internal chamber serving as a low pressure region and a well annulus serving as an energy source. A valve assembly provides selective fluid communication between alternating opposite sides of a piston and each of the energy source and low pressure region. Displacement of the piston operates a well tool. Operation of the valve assembly is controlled via telemetry between a remote location and an electronic circuit of the system.
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Allin Melissa G.
Kyle Donald G.
Ringgenberg Paul D.
Schultz Roger L.
Trinh Tyler T.
Halliburton Energy Service,s Inc.
Smith Marlin R.
Thompson Kenneth
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