Production of shale oil by in-situ retorting of oil shale

Details Production of shale oil by in-situ retorting of oil shale Production of shale oil by in-situ retorting of oil shale

1981-04-27

1983-04-05

Pate, III, William F.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

299 13, E21C 4110

Patent

active

043789498

ABSTRACT:
A modified in-situ retort for the retorting of oil shale is constructed by mining an open space having a volume of twenty-five to thirty-five percent of the volume of the retort in the bottom of the retort and thereafter blasting the oil shale that is to remain in the retort as rubble in a manner to cause random free fall of the shale particles onto the rubblized bed. Blasting occurs sequentially from the bottom of the unfragmented shale immediately above the open space to the top of the retort. At each blast, there is an open space below the shale to be broken in the blast having a volume at least one-third the volume of that shale, and the timing of the blasts is such that movement of the broken shale is not interfered with by shale broken in the preceding blast. There is no withdrawal of oil shale that would cause downward movement of the rubble that is to be retorted in-situ. The resultant in-situ retort is characterized by a high and uniform permeability.

REFERENCES:
patent: 3001776 (1961-09-01), van Poollen
patent: 3342257 (1967-09-01), Jacobs et al.
patent: 3434757 (1969-03-01), Prats
patent: 3460867 (1969-08-01), Cameron
patent: 3586377 (1971-06-01), Ellington
patent: 3661423 (1972-05-01), Garrett
patent: 3999607 (1976-12-01), Pennington
patent: 4017119 (1977-04-01), Lewis
patent: 4022511 (1977-05-01), French
patent: 4140343 (1979-02-01), Mills
patent: 4185871 (1980-01-01), Krapil

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