Supporting technology for enhanced oil recovery: Polymer predictive model
The Polymer Flood Predictive Model (PFPM) was developed by Scientific Software-Intercomp for the National Petroleum Council's (NPC) 1984 survey of US enhanced oil recovery potential (NPC, 1984). The PFPM is switch-selectable for either polymer or waterflooding, and an option in the model allows the calculation of the incremental oil recovery and economics of polymer relative to waterflooding. The architecture of the PFPM is similar to that of the other predictive models in the series: in-situ combustion, steam drive (Aydelotte and Pope, 1983), chemical flooding (Paul et al., 1982) and CO/sub 2/ miscible flooding (Paul et al., 1984). In the PFPM, an oil rate versus time function for a single pattern is computed and then is passed to the economic calculations. Data for reservoir and process development, operating costs, and a pattern schedule (if multiple patterns are desired) allow the computation of discounted cash flow and other measures of profitability. The PFPM is a three-dimensional (stratified, five-spot), two-phase (water and oil) model which computes water from breakthrough and oil recovery using fractional flow theory, and models areal and vertical sweeps using a streamtube approach. A correlation based on numerical simulation results is used to model the polymer slug size effect. The physical properties of polymer fluids, such as adsorption, permeability reduction, and non-Newtonian effects, are included in the model. Pressure drop between the injector and producer is kept constant, and the injectivity at each time step is calculated based on the mobility in each streamtube. Heterogeneity is accounted for by either entering detailed layer data or using the Dykstra-Parsons coefficient for a reservoir with a log-normal permeability distribution. 24 refs., 27 figs., 59 tabs.
- Research Organization:
- USDOE Bartlesville Project Office, OK; INTEVEP, Filial de Petroleos de Venezuela, SA, Caracas
- OSTI ID:
- 6469746
- Report Number(s):
- DOE/BC-86/10/SP; ON: DE87001207
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ADSORPTION
COMPUTER CODES
COMPUTERIZED SIMULATION
ECONOMICS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FORECASTING
FOSSIL FUELS
FUELS
MATHEMATICAL MODELS
OIL WELLS
P CODES
PERMEABILITY
PETROLEUM
POLYMERS
RECOVERY
SIMULATION
SORPTION
SWEEP EFFICIENCY
THREE-DIMENSIONAL CALCULATIONS
TWO-PHASE FLOW
WATERFLOODING
WELLS