Wells – Processes – With indicating – testing – measuring or locating
Patent
1979-07-30
1981-06-16
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166252, E21B 4700, E21B 4900
Patent
active
042731879
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.
REFERENCES:
patent: 3427652 (1969-02-01), Seay
patent: 3508876 (1970-04-01), Polly
patent: 4058366 (1977-11-01), Cabbiness
patent: 4090308 (1978-05-01), Deans et al.
patent: 4099565 (1978-07-01), Sheely et al.
patent: 4168746 (1979-09-01), Sheely
Dalton et al., "Single-Well Tracer Method to Measure Residual Oil Saturation," SPE Paper No. 3792, 1972.
Howard Curtis E.
Satter Abdus
Shum Yick M.
Widmyer Richard H.
Kulason Robert A.
Novosad Stephen J.
Park Jack H.
Ries Carl G.
Suchfield George A.
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