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Method for borehole measurement of formation properties

  • US 7,310,580 B2
  • Filed: 12/13/2002
  • Issued: 12/18/2007
  • Est. Priority Date: 10/10/2000
  • Status: Expired due to Fees
First Claim
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1. A method of estimating a subsurface formation'"'"'s velocity ratio using a bottom hole assembly comprising:

  • (a) generating a compressional wave having a first wavelength from said bottom hole assembly;

    (b) detecting a compressional wave received signal using said bottom hole assembly;

    (c) generating a shear wave having a second wavelength from said bottom hole assembly;

    (d) detecting a shear wave received signal using said bottom hole assembly; and

    (e) phase matching said detected compressional and shear wave received signals to determine said velocity ratio.

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