Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2007-04-10
2007-04-10
Thompson, Kenneth (Department: 3672)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S053000, C166S066700, C166S319000, C166S334100, C166S386000
Reexamination Certificate
active
10438793
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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Search Report for U.K. application GB 0410709.0.
Examination report dated Aug. 31, 2006 for UK application No. GB0410709.0.
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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