Displacement of oil by polymer flooding. Pt. 3
A number of oil displacement runs were made on core samples, with the results given by graphical representation. In one instance, the core had a high permeability and in another instance, the core had a low permeability. The displacement fluid included brine, a polymer, and a mixture of gylcerine-water and polymer. The recoveries obtained when displacing Soltrol were, in general, about 10% higher than those obtained when paraffin oil was the displaced phase. This was probably due to the fact that, when low viscosity Soltrol was displaced, the viscosity ratio of the displacing fluid (brine or polymer solution) was much more favorable than when high viscosity paraffin oil was being displaced. This leads to the conclusion that an already quite favorable viscosity ratio, as is the case for the Soltrol-brine system, yields higher recoveries. The gains in first-phase recovery and second-phase recovery obtained through the use of polymer fluids were about twice as high in paraffin oil-saturated cores as in Soltrol-saturated cores. This may be explained by considering the mobilities of the fluids employed.
- Research Organization:
- Pennsylvania State Univ
- OSTI ID:
- 6760266
- Journal Information:
- Prod. Mon.; (United States), Journal Name: Prod. Mon.; (United States) Vol. 30:7; ISSN PROMA
- Country of Publication:
- United States
- Language:
- English
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ENERGY SOURCES
ENGINEERING
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FLUID INJECTION
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MATHEMATICS
OIL WELLS
PERMEABILITY
PETROLEUM
RECOVERY
RESERVOIR ENGINEERING
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