Method for correcting gamma ray spectra for borehole tracer inte

Details Method for correcting gamma ray spectra for borehole tracer inte Method for correcting gamma ray spectra for borehole tracer inte

1988-06-24

1990-07-03

Howell, Janice A.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250269, G01V 500

Patent

active

049393618

ABSTRACT:
Techniques are shown for determining the distribution of plural tracer isotopes located inside and outside a cased well borehole. Standard gamma ray spectra of plural tracer isotopes taken inside and outside (and possibly intermediate) a well borehole are fitted to an unknown gamma ray spectrum of a well having plural tracer isotopes used therein. Techniques using a priori knowledge of well geometry and not using such knowledge are disclosed for performing the analysis of the unknown well spectrum.

REFERENCES:
patent: 4717825 (1988-01-01), Smith et al.
patent: 4825071 (1989-04-01), Gadeken et al.

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