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Spectral power ratio method and system for detecting drill bit failure and signaling surface operator

  • US 6,681,633 B2
  • Filed: 10/26/2001
  • Issued: 01/27/2004
  • Est. Priority Date: 11/07/2000
  • Status: Expired due to Term
First Claim
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1. A system for predicting drill bit failure, comprising:

  • a drill string having a drill bit and a sub assembly;

    one or more sensors located on said sub assembly;

    wherein data from said one or more sensors is separated into frequency bands; and

    wherein drill bit failure is predicted based on the ratios of energy in said frequency bands.

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