Hydraulic power source for downhole instruments and actuators
First Claim
1. A system for providing power to devices in a well having a production tubing and a packer sealing an annulus between the well and tubing comprising:
- a conduit connecting the annulus above said packer to the annulus below said packer, and an electrical generator coupled to said conduit using energy from fluid flowing through said conduit to generate electrical power.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a system for using pressure differential between completion fluid in an oil well and produced fluids to power downhole devices, including instruments and actuators. A conduit is provided bypassing a packer which seals a production string to a well casing. A control system, including a flow valve, allows fluid to flow to an electrical generator as needed to charge an electrical storage device. Downhole electrically operated devices, e.g. a temperature sensor and signal transmitter, draw power from the storage device. Alternatively, fluid may also be directed to hydraulically driven actuators to, for example, operate a production fluid control valve.
25 Citations
40 Claims
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1. A system for providing power to devices in a well having a production tubing and a packer sealing an annulus between the well and tubing comprising:
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a conduit connecting the annulus above said packer to the annulus below said packer, and an electrical generator coupled to said conduit using energy from fluid flowing through said conduit to generate electrical power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for providing power to devices in a well having a production tubing and a packer sealing an annulus between the well and tubing comprising:
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a conduit connecting the annulus above said packer to the annulus below said packer, and a hydraulically driven actuator coupled to said conduit using fluid flowing through said conduit to provide power to devices located in said well. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for providing power to devices in a well having a production tubing and a packer sealing an annulus between the well and tubing comprising:
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a conduit connecting the annulus above said packer to the annulus below said packer, and power means coupled to said conduit for using fluid flowing through said conduit to provide power to devices located in said well. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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- 34. A method for providing power to devices in a producing well having a production tubing and a packer sealing an annulus between the well and tubing comprising using pressure differential between fluid above said packer and fluid below said packer to provide power to said devices.
Specification