Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1995-06-06
1997-02-04
Tokar, Michael J.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
250262, G01V 504
Patent
active
056001355
ABSTRACT:
A method for providing gain stabilization to a nuclear spectroscopy tool by use of gross features of largely invariant spectra. A particle or gamma ray energy spectrum of an earth formation and wellbore are measured. A ratio of the number of particles or gamma rays measured in a first energy window to the number of particles or gamma rays measured in a second energy window is calculated. The gain of the nuclear spectroscopy tool is adjusted as a function of the calculated ratio. The first energy window is selected to span substantially an entire range of measured energies for the spectrum and the second energy window is selected to span an upper range of the measured energies for the spectrum.
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Halliburton Company
Nguyen Kiet T.
Tokar Michael J.
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