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DOWNHOLE ENERGY HARVESTING

  • US 20190323322A1
  • Filed: 12/30/2016
  • Published: 10/24/2019
  • Est. Priority Date: 12/30/2016
  • Status: Active Grant
First Claim
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1. A downhole electrical energy harvesting system for use in a well installation having metallic structure comprising at least one run of metallic elongate members carrying electrical current, the harvesting system comprising:

  • an energy harvesting module comprising an electrical circuit connected between spaced contacts to harvest energy from a potential difference between the spaced contacts, wherein a first of the spaced contacts is made to the at least one run of metallic elongate members at a first location and a second of the spaced contacts is made to the at least one run of metallic elongate members at a second location and the potential difference is caused by the current flowing in the at least one run of elongate members and, at least in part, the impedance of the at least one run of elongate members.

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