Method for in-situ heated annulus refining process
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United States of America Patent
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Sep 8, 1992
Issued Date -
N/A
app pub date -
Jul 22, 1991
filing date -
Aug 3, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Recovery of viscous petroleum such as from tar sands is assisted using a controlled flow of hot fluid and hydrogen-generating gas in a flow path within the formation; thus a solid-wall hollow tubular member in the formation is used for conducting hot fluid to promote hydrogenation in conjunction with a hydrogen-generating gas and reduce viscosity of the petroleum to develop a potential passage in the formation outside the tubular member into which a drive fluid is injected to promote movement of the petroleum to a production position.
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