In situ oil shale retort with a generally T-shaped vertical cross section
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United States of America Patent
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-
Dec 1, 1981
Issued Date -
N/A
app pub date -
Nov 2, 1979
filing date -
Jul 31, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An in situ oil shale retort is formed in a subterranean formation containing oil shale. The retort contains a fragmented permeable mass of formation particles containing oil shale and has a production level drift in communication with a lower portion of the fragmented mass for withdrawing liquid and gaseous products of retorting during retorting of oil shale in the fragmented mass. The principal portion of the fragmented mass is spaced vertically above a lower production level portion having a generally T-shaped vertical cross section. The lower portion of the fragmented mass has a horizontal cross sectional area smaller than the horizontal cross sectional area of the upper principal portion of the fragmented mass above the production level.
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