Behavior of partially hydrolyzed polyacrylamide solutions in porous media
The variables are surveyed which determine the behavior of partially hydrolyzed polyacrylamide, often mentioned as an additive for viscous waterflooding. The parameters studied are composition of the brine in which the polymer is dissolved, the chemical composition of the solid phase which the polymer solution contacts, the pore sizes of the solid phase, molecular weight of the polymer, flow rate of the polymer solution, and temperature. The results show that the extent of polymer adsorption from solution may be quite high if the solution is very saline or is in contact with carbonate rock. The results also suggest that solution salinity, flow rate, rock pore size and polymer molecular weight exert major influences on the reduction of mobility and permeability by polymer solution. At temperatures where the polymer is chemically stable, the effect of temperature on flow behavior appears trivial. In Berea Sandstone, alternation of wettability and oil saturation appears to have no marked effect on either polymer solution mobility or reduction of permeability. (12 refs.)
- Research Organization:
- Sinclair Oil Corp
- OSTI ID:
- 5493111
- Report Number(s):
- CONF-690466-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE-2422; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ABSORPTION
ADDITIVES
AMIDES
BRINES
CARBONATE ROCKS
CHEMICAL COMPOSITION
DISPERSIONS
ENERGY SOURCES
ENGINEERING
FLOW RATE
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
GEOLOGIC FORMATIONS
MIXTURES
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PERMEABILITY
PETROLEUM
POLYMERS
POROSITY
RECOVERY
RESERVOIR ENGINEERING
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
VISCOSITY
WATERFLOODING
WETTABILITY