Petroleum recovery chemical retention prediction technique
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United States of America Patent
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Jun 16, 1981
Grant Date -
N/A
app pub date -
Jul 30, 1979
filing date -
Jul 30, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The amount of a petroleum recovery chemical retained within a subterranean reservoir is predicted by first gathering data from at least one injection-soak-production cycle in a single well wherein the produced fluids are monitored for both the chemical concentration in the produced fluid as well as the concentration of a nonabsorbing tracer and, second, utilizing this data in a chemical flood mathematical model to simulate at least one repetition of the injection-soak-production cycle. The simulated cycles are repeated until the simulated produced fluid concentration of the chemical is virtually the same as the actual produced fluid concentration of the nonabsorbed tracer. The amount of the chemical retained per unit of reservoir volume is then determined by conventional techniques.
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