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Hydraulic power source for downhole instruments and actuators

  • US 6,745,844 B2
  • Filed: 03/19/2002
  • Issued: 06/08/2004
  • Est. Priority Date: 03/19/2002
  • Status: Expired due to Term
First Claim
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1. A system for providing power to devices in a producing well having a production tubing, a packer sealing an annulus between the well and tubing, completion fluid in the annulus above the packer and produced fluids below the packer, comprising:

  • a conduit connecting the annulus above said packer to the annulus below said packer, and an electrical generator located in said well below said packer coupled to said conduit using energy from completion fluid flowing through said conduit to generate electrical power.

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