Retorting of oil shale

Details Retorting of oil shale Retorting of oil shale

E - Fixed Constructions

21

B

166/36

E21B 43/24 (2006.01) E21B 43/243 (2006.01)

Patent

CA 1044595

ABSTRACT An in situ oil shale retort in which a cavity filled with broken particles of oil shale is formed within the sub-surface oil shale formation and air is forced down through the cavity to sustain combustion of the top layer of oil shale particles. The products of combustion are withdrawn through a plurality of transverse exhaust pipes at the bottom of the cavity, the exhaust pipes each being provided with series of holes along the length of the pipes within the cavity, the holes being graded in size to compensate for the pressure drop along the length of the pipe 90 as to provide substantially equal volume of gas flow through each of the holes.

233289

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