Low interfacial tension relative permeability
EOR processes that feature a near miscible process, CO/sub 2/ injected below the minimum miscibility pressure or micellar fluids, require relative permeability data to calculate the flow behavior of the low interfacial tension (low IFT) fluids. The flow behavior of low IFT fluids differs from that of conventional gas and oil or water and oil; it depends upon IFT, viscosity, and flow rate as well as the rock properties of pore size distribution and wettability. The results of laboratory core tests using an alcohol, brine, and oil fluid system in outcrop and reservoir rock samples are presented. Both water and oil relative permeability curves were found to shift upward, indicating the two phases interfere less with each other as IFT is reduced. For a given reservoir rock type, the flow behavior is adequately characterized by a capillary number defined by combined (total) fluid velocity, average viscosity, and interfacial tension. It was also found that flow tests on representative reservoir rock samples are necessary to describe low interfacial tension relative permeability for field process performance calculations.
- Research Organization:
- Amoco Production Co.
- OSTI ID:
- 5361861
- Report Number(s):
- CONF-8310121-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE12171; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CAPILLARY FLOW
CARBON DIOXIDE INJECTION
COMPUTER CALCULATIONS
CRYSTAL STRUCTURE
DATA
DRILL CORES
ENHANCED RECOVERY
EXPERIMENTAL DATA
FLOW MODELS
FLOW RATE
FLUID FLOW
FLUID INJECTION
FLUID MECHANICS
FLUIDS
HYDRAULIC CONDUCTIVITY
HYDRODYNAMICS
INFORMATION
MATERIALS TESTING
MATHEMATICAL MODELS
MECHANICS
MICROSTRUCTURE
MISCIBLE-PHASE DISPLACEMENT
NATURAL GAS WELLS
NUMERICAL DATA
OIL WELLS
PERFORMANCE
PERMEABILITY
POROSITY
RECOVERY
RESERVOIR FLUIDS
RESERVOIR ROCK
ROCK-FLUID INTERACTIONS
SAMPLING
SURFACE PROPERTIES
SURFACE TENSION
TESTING
VISCOSITY
WELLS
WETTABILITY