Operation of an in situ oil shale retort

Details Operation of an in situ oil shale retort Operation of an in situ oil shale retort

1978-02-13

1979-04-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

166259, E21C 4110

Patent

active

041497520

ABSTRACT:
An in situ oil shale retort containing a fragmented permeable mass of formation particles containing oil shale is formed in a subterranean formation. The void fraction of the fragmented mass is from about 10 to about 25 percent, and the weight average diameter of particles in the fragmented mass is from about 0.02 to about 0.3 foot. Combustion zone feed containing oxygen is introduced to a combustion zone established in the fragmented mass. The rate at which the combustion zone feed is introduced to the combustion zone is controlled for maintaining the modified Reynolds number of gas passing through the combustion zone in the range of from about 0.1 to about 20.

REFERENCES:
patent: 3318798 (1967-05-01), Kondis et al.
patent: 3941421 (1976-03-01), Burton et al.
patent: 3951456 (1976-04-01), Ridley
patent: 4043595 (1977-08-01), French
patent: 4043597 (1977-08-01), French
patent: 4043598 (1977-08-01), French et al.
"Retorting Ungraded Oil Shale as Related to In-Situ Processing," ACS Preprint, Carpenter et al., 1968.
"Application of Aboveground Retorting Variables To In-Situ Oil Shale Processing," Quarterly of Colorado Schl. of Mines, Carpenter et al., 1968.

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