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Method and Apparatus for Fluid Influx Detection While Drilling

  • US 20070144740A1
  • Filed: 12/14/2006
  • Published: 06/28/2007
  • Est. Priority Date: 12/16/2005
  • Status: Active Grant
First Claim
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1. A method of detecting a presence of a second fluid from an earth formation into a borehole containing a first fluid, the method comprising:

  • (a) conveying a logging tool into the borehole;

    (b) irradiating the earth formation with a source thereof on the logging tool;

    (c) measuring radiation resulting from interaction of the irradiation with nuclei in the borehole at at least one detector; and

    (d) estimating from the measured radiation the presence of the second fluid in the borehole.

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