Wells – Processes – With indicating – testing – measuring or locating
Patent
1981-02-09
1983-01-25
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
436 28, 436133, E21B 43243, G01N 3112
Patent
active
043698425
ABSTRACT:
An in situ oil shale retort is formed in a subterranean formation containing oil shale. The retort contains a fragmented permeable mass of particles comprising kerogen and various inorganic carbonates. A processing zone is established in the fragmented mass of formation particles and advanced therethrough. Off-gas, including carbon dioxide from carbonate decomposition, is withdrawn from the retort. The carbon dioxide content of the withdrawn off-gas, being a function of the processing zone temperature, is then determined. The determined carbon dioxide content of the withdrawn off-gas is then compared to values of carbon dioxide content of off-gas predicted as a function of processing zone temperature.
REFERENCES:
patent: 3032102 (1962-05-01), Parker
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patent: 3520363 (1970-07-01), Bauer
patent: 3892270 (1975-07-01), Lindquist
patent: 4148529 (1979-04-01), Burton
patent: 4151877 (1979-05-01), French
patent: 4166721 (1979-09-01), Cha
patent: 4249603 (1981-02-01), Skogen
"Thermal Decomposition Rates of Carbonates in Oil Shale", Industrial and Engineering Chemistry, 45, (1953), pp. 2711-2714.
Novosad Stephen J.
Occidental Oil Shale Inc.
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