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US 8,505,294 B2Granted
Method and system for control of hydraulic systems
AssigneeBaker Hughes Incorporated
InventorsDarrin L. Willauer, Conrad G. Weinig, Walter S. Going
Life of this patent
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Abstract
A hydraulic actuation system includes a metering valve; and a piston arrangement hydraulically in parallel with the metering valve, the system configured to preferentially move the piston to precharge an end device with hydraulic fluid prior to supplying an actuation fluid volume to the end device and method for actuating a hydraulic end device.
Claims6
A hydraulic actuation system comprising:
- a metering valve;
- and
- a piston arrangement hydraulically in parallel with the metering valve, the system configured to preferentially move the piston to precharge an end device with hydraulic fluid prior to supplying hydraulic fluid of a specific volume defined by the metering valve in parallel to the end device.
A method for actuating a hydraulic end device comprising:
- pressuring a control line with parallel hydraulic access to a metering valve and a floating piston arrangement;
- stroking a piston of the piston arrangement if the piston arrangement is in a position that allows stroking;
- and
- stroking the metering valve after the piston arrangement is in a position that prevents further stroking of the piston to supply a specific volume of fluid defined by the metering valve to the end device.
1 more element
A hydraulic actuation system comprising:
- a downhole flow control device;
- a metering valve in hydraulic communication with the downhole flow control device;
- and
- a piston arrangement hydraulically in parallel with the metering valve, the system configured to preferentially move the piston to precharge the downhole flow control device with hydraulic fluid prior to supplying hydraulic fluid of a specific volume defined by the metering valve to the downhole flow control device.
1 more element
Dependencies are inferred from the claim text.