Process for forming an in situ oil shale retort

Details Process for forming an in situ oil shale retort Process for forming an in situ oil shale retort

1982-06-28

1984-05-08

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

102312, E21C 4110

Patent

active

044470908

ABSTRACT:
A process is provided for forming an in situ oil shale retort which minimizes channeling, explosion gas turbulence and flame front tilting. In the process, explosives are detonated in an underground formation of oil shale to blast the oil shale into a permeable rubblized mass defining a retort, and gases emitted from the explosion are symmetrically vented. In the preferred form, the gases are vented through vertical vent holes and blast holes which extend through the top of the retort, as well as through a lateral access tunnel which extends into the bottom of the retort.

REFERENCES:
patent: 4266826 (1981-05-01), French

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