In situ recovery of shale oil

Details In situ recovery of shale oil In situ recovery of shale oil

1977-09-19

1984-01-03

Pate, III, William F.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

299 13, 299 19, 299 11, E21C 4110

Patent

active

044239076

ABSTRACT:
An in situ oil shale retort is formed in a subterranean formation containing oil shale and having horizontal cleavage planes extending parallel to the bedding of the formation and approximately orthogonal vertical cleavage plane sets extending perpendicular to the horizontal cleavage planes. The in situ retort is formed by excavating an opening or void in a retort site in the formation and placing explosive in the formation adjacent the void such that the explosive can fracture formation along the vertical cleavage planes and expand remaining formation within the retort site toward the void, forming a fragmented permeable mass of formation particles containing oil shale within the retort site.

REFERENCES:
patent: 3586377 (1971-06-01), Ellington
patent: 3661423 (1972-05-01), Garret
patent: 3917346 (1975-11-01), Janssen
J. F. T. Agapito, Pillar Design in Competent Bedded Formation, Thesis for colorado School of Mines, 1972.
Sellers, et al., Rock Mechanics Research on Oil Shale Mining, paper delivered at AIME convention 1971.
Mining Engineer's Handbk., 3rd Ed., Peele ed., John Wiley & Sons N.Y., vol.1 pp. 477-478.

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