Method for maximum in-situ visbreaking of heavy oil
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United States of America Patent
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Jul 23, 1985
Grant Date -
N/A
app pub date -
Apr 5, 1982
filing date -
Apr 5, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the recovery of viscous oil from a subterranean, viscous oil-containing formation by injecting steam into the formation via at least one well at a sufficient temperature, rate, and in a sufficient amount to effect maximum visbreaking of the oil in place, terminating injection of steam and producing fluids including oil through the same well used for injecting steam. The injection-production cycle may be repeated for a plurality of cycles until the ratio of oil/water in the produced fluids is unfavorable.
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