Wells – Processes – In situ combustion
Patent
1984-03-22
1987-01-20
Suchfield, George A.
Wells
Processes
In situ combustion
166259, 166266, E21B 4324
Patent
active
046374647
ABSTRACT:
Product yield and quality is increased during in situ retorting of oil shale by pulsed combustion in which the flow of feed gas to the flame front is intermittently stopped while continuously retorting the oil shale. In the process, a water purge is injected into the retort between pulses of feed gas to enhance transfer of sensible heat from the combustion zone to the retorting zone and enlarge the separation between the combustion zone and the advancing front of the retorting zone. Retort water produced during retorting can be used as part of the water purge and/or feed gas for process economy and efficiency.
REFERENCES:
patent: 4036299 (1977-07-01), Cha et al.
patent: 4192381 (1980-03-01), Cha
patent: 4353418 (1982-10-01), Hoekstra et al.
patent: 4436344 (1984-03-01), Forgac et al.
patent: 4444256 (1984-04-01), Shen
patent: 4457374 (1984-07-01), Hoekstra et al.
patent: 4532991 (1985-08-01), Hoekstra et al.
Forgac John M.
Hoekstra George R.
Amoco Corporation
Chevron U.S.A. Inc.
Kisliuk Bruce M.
Magidson William H.
McClain William T.
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