Producing shale oil from a cavity-surrounded central well

Details Producing shale oil from a cavity-surrounded central well Producing shale oil from a cavity-surrounded central well

1975-06-05

1976-07-06

Novosad, Stephen J.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Input and output wells

166245, 166271, 166272, 299 5, E21B 4324, E21B 4328

Patent

active

039678539

ABSTRACT:
In producing shale oil by circulating hot fluid into and out of void spaces within a subterranean oil shale, a plurality of cavities are formed around a central well, the cavities and the well are interconnected by leaching an areally extensive void space within a layer of water-soluble mineral, and hot fluid is circulated in through the cavities and out through the central well.

REFERENCES:
patent: 2561639 (1951-07-01), Squires
patent: 3022986 (1962-02-01), Brandt
patent: 3501201 (1970-03-01), Closmann et al.
patent: 3759574 (1973-09-01), Beard
patent: 3779602 (1973-12-01), Beard et al.
patent: 3792902 (1974-02-01), Towell et al.
patent: 3804169 (1974-04-01), Closmann
patent: 3880238 (1975-04-01), Tham et al.

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