Analysis of factors influencing the mobility and adsorption in the flow of polymer solution through porous media
The rheological behavior of the flow of polymer solution through porous media could be Newtonian at low flow rates, pseudoplastic at intermediate flow rates, and dilatant at high flow rates. The pseudoplastic behavior is modeled with the Blake-Kozeny model for power law model fluids. The dilatant behavior is modeled with the viscoelastic properties of the polymer solution. The reduction in permeability is postulated to be due to a trapped or adsorbed layer of polymer molecules that either plugs or reduces the effective size of the pores. A dimensionless number has been formulated to correlate the permeability reduction factor withthe polymer, brine, and rock properties. This dimensionless number represents the ratio of the size of the polymer molecular coil to an effective pore radius of the porous medium. A model has been developed to represent adsorption as a function of polymer, brine, and rock properties. The model assumes that the polymer is absorbed on the surface of the porous medium as a monolayer of molecular coils that have a segment density only slightly greater than the molecular coil in dilute solution. (25 refs.)
- OSTI ID:
- 6137553
- Report Number(s):
- CONF-7210140-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE-4026; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Flow of polymer solutions through porous media
Behavior of partially hydrolyzed polyacrylamide solutions in porous media
Related Subjects
020300* -- Petroleum-- Drilling & Production
ADSORPTION
BRINES
DILUTION
ENERGY SOURCES
ENHANCED RECOVERY
FLOW RATE
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
MATERIALS
MOBILITY
OIL WELLS
PERMEABILITY
PETROLEUM
PLUGGING
POLYMERS
POROUS MATERIALS
RECOVERY
RHEOLOGY
SORPTION
VISCOSITY
WATER TREATMENT
WATERFLOODING
WELLS