Wells – Processes – With indicating – testing – measuring or locating
Patent
1977-05-18
1978-04-04
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
299 2, E21B 4324, E21B 4500, E21B 4712
Patent
active
040821455
ABSTRACT:
The locus of a processing zone advancing through a fragmented permeable mass of particles in an in situ oil shale retort in a subterranean formation containing oil shale is determined by monitoring for sound produced in the retort, preferably by monitoring for sound at at least two locations in a plane substantially normal to the direction of advancement of the processing zone. Monitoring can be effected by placing a sound transducer in a well extending through the formation adjacent the retort and/or in the fragmented mass such as in a well extending into the fragmented mass.
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VAN Poollen, "Transient Tests Find Fire Front in an In Situ Combustion Project", The Oil and Gas Journal, vol. 63, No. 5, 2/1/65 pp. 78-80, 166-251.
Novosad Stephen J.
Occidental Oil Shale Inc.
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