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Electric power supply for use downhole

  • US 5,149,984 A
  • Filed: 02/20/1991
  • Issued: 09/22/1992
  • Est. Priority Date: 02/20/1991
  • Status: Expired due to Term
First Claim
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1. A downhole electrical power supply apparatus, comprising:

  • a high fluid pressure source zone defined at least partially in said apparatus;

    a low fluid pressure discharge zone defined at least partially in said apparatus;

    a fluid powered engine means, for providing a rotational mechanical output powered by fluid flowing from said source zone through said engine means to said discharge zone;

    a fluid supply valve means between said source zone and said discharge zone for controlling flow of fluid from said source zone through said engine means; and

    electrical power generating means for converting said rotational mechanical output of said engine means into electrical output.

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