Numerical three-phase model of the two-dimensional steam flood process
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5376349
A numerical mathematical model is described that is a significant extension of a previously published one-dimensional model of the steam-flood process. The model describes the simultaneous flow of the 3 phases--oil, water, and gas--in 2 dimensions. Interphase mass transfer between water and gas phases is allowed, but the oil is assumed nonvolatile and the hydrocarbon gas insoluble in the liquid phases. The model allows 2-dimensional heat convection within the reservoir and 2-dimensional heat conduction in a vertical cross section spanning the oil sand and adjacent strata. Example calculations are presented which, on comparison with experimental results, tend to validate the model. Steam overriding due to gravity effects is shown to reduce significantly oil recovery efficiency in a thick system while failing to do so in a thinner system. A study of the effect of capillary pressure indicates that failure to scale capillary forces in laboratory models of thick sands may lead to optimistic recovery predictions, while properly scaled capillary forces may be sufficiently low as to play no important role in oil recovery. Calculations made with and without vertical permeability show that failure to account for vertical fluid flow can lead to predictions of pessimistic oil-recovery efficiency.
- Research Organization:
- Esso Production Res Co
- OSTI ID:
- 5376349
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-2798
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CALCULATION METHODS
ENERGY TRANSFER
ENGINEERING
ENHANCED RECOVERY
FLOW MODELS
FLUID INJECTION
FORECASTING
HEAT TRANSFER
MATHEMATICAL MODELS
OIL WELLS
RECOVERY
RESERVOIR ENGINEERING
STEAM INJECTION
THERMAL RECOVERY
TWO-DIMENSIONAL CALCULATIONS
WELLS
020300* -- Petroleum-- Drilling & Production
CALCULATION METHODS
ENERGY TRANSFER
ENGINEERING
ENHANCED RECOVERY
FLOW MODELS
FLUID INJECTION
FORECASTING
HEAT TRANSFER
MATHEMATICAL MODELS
OIL WELLS
RECOVERY
RESERVOIR ENGINEERING
STEAM INJECTION
THERMAL RECOVERY
TWO-DIMENSIONAL CALCULATIONS
WELLS