Method for establishing a combustion zone in an in situ oil shal

Details Method for establishing a combustion zone in an in situ oil shal Method for establishing a combustion zone in an in situ oil shal

1977-06-27

1979-04-03

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

166259, 299 13, E21B 4324, E21B 4326

Patent

active

041473892

ABSTRACT:
A method for retorting oil shale in an in situ oil shale retort includes the steps of excavating a void in a subterranean formation containing oil shale and placing combustible material in the void adjacent an ignition situs. Formation is then explosively expanded toward the void to form a retort containing a fragmented permeable mass of formation particles containing oil shale, the top layer of the fragmented mass adjacent an ignition situs containing such combustible material. The combustible material is then ignited for establishing a combustion zone in the retort.

REFERENCES:
patent: 3165154 (1965-01-01), Santourian
patent: 3349848 (1967-10-01), Burgh
patent: 3417818 (1968-12-01), Dyson
patent: 3454958 (1969-07-01), Parker
patent: 3465819 (1969-09-01), Dixon
patent: 3586377 (1971-06-01), Ellington

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