Doping a retort with radioactive nuclides to determine the locus

Details Doping a retort with radioactive nuclides to determine the locus Doping a retort with radioactive nuclides to determine the locus

1978-12-26

1981-02-10

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166252, 166259, 299 2, 299 13, E21B 43247, E21B 43263

Patent

active

042496039

ABSTRACT:
The locus of a processing zone advancing through a fragmented permeable mass of formation particles in an in situ oil shale retort in a subterranean formation containing oil shale and which generates an effluent fluid is determined by placing a radionuclide source for providing an identifiable radionuclide, and monitoring effluent fluid from the processing zone for presence of such radionuclide. The radionuclide source provides radionuclide at a predetermined temperature.

REFERENCES:
patent: 2658724 (1953-11-01), Arps
patent: 3011566 (1961-12-01), Graham
patent: 3044543 (1962-07-01), Ramey, Jr.
patent: 3116450 (1963-12-01), Longwill
patent: 3661423 (1972-05-01), Garrett
patent: 3678883 (1972-07-01), Fischer
patent: 4148529 (1979-04-01), Burton
patent: 4149592 (1979-04-01), Burton et al.
Burwell et al., "Krypton 85 Tracer Aids Evaluation of Underground Combustion Oil-Recovery Tests", Producers Monthly, Jan. 1965, pp. 21-23.

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