Supporting technology for enhanced oil recovery: CO/sub 2/ miscible flood predictive model
The CO/sub 2/ Miscible Flood Predictive Model (CO2PM) was developed by Scientific Software-Intercomp for the US Department of Energy and was used in the National Petroleum Council's (NPC) 1984 survey of US enhanced oil recovery potential (NPC, 1984). The CO2PM is applicable to both secondary (mobile oil) and tertiary (residual oil) floods, and to either continuous CO/sub 2/ injection or water-alternating-gas (WAG) processes. In the CO2PM, an oil rate versus time function for a single pattern is computed, the results of which are passed to the economic calculations. To estimate multi-pattern project behavior a pattern development schedule is required. After-tax cash flow is computed by combining revenues with costs for drilling, conversion and well workovers, CO/sub 2/ compression and recycle, fixed and variable operating costs, water treating and disposal costs, depreciation, royalties, severance, state, federal and windfall profit taxes, cost and price inflation rates, and the discount rate. A lumped parameter uncertainty model is used to estimate risk, allowing for variation in computed project performance within an 80% confidence interval. The CO2PM is a three-dimensional (layered, five-spot), two-phase (aqueous and oleic), three component (oil, water, and CO/sub 2/) model. It computes oil and CO/sub 2/ breakthrough and recovery from fractional theory modified for the effects of viscous fingering, areal sweep, vertical heterogeneity and gravity segregation. 23 refs., 19 figs., 57 tabs.
- Research Organization:
- INTEVEP, Filial de Petroleos de Venezuela, SA, Caracas; USDOE Bartlesville Project Office, OK
- OSTI ID:
- 6503908
- Report Number(s):
- DOE/BC-86/12/SP; ON: DE87001209
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
C CODES
CARBON DIOXIDE INJECTION
COMPUTER CODES
COMPUTERIZED SIMULATION
COST
ECONOMICS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FORECASTING
FOSSIL FUELS
FUELS
MATHEMATICAL MODELS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
PETROLEUM
RECOVERY
SIMULATION
SWEEP EFFICIENCY
THREE-DIMENSIONAL CALCULATIONS
WELLS