Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate
2007-08-07
2007-08-07
Porta, Dave (Department: 2884)
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
C250S269300, C250S252100
Reexamination Certificate
active
10809066
ABSTRACT:
A method for determining concentrations of naturally occurring radioactive elements in earth formation by analysis of gamma ray energy spectra measured by at least one gamma ray detector while the borehole is being drilled. Gain of the gamma ray detector is controlled automatically through analysis of the spectra. The one or more gamma ray detectors are disposed at the periphery of the downhole instrumentation to maximize sensitivity. Elemental concentrations of naturally occurring radioactive elements such as potassium, uranium and thorium are measured either as a function of depth in the borehole, or as a function of aximuthal sectors around the borehole wall, or as a function of both depth and azimuthal sectors.
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Jones Dale A.
Mickael Medhat W.
Phelps Donald A.
Wright John E.
Boosalis Faye
McCollum Patrick H.
Porta Dave
Weatherford Canada Partnership
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