A minimum miscibility pressure study using impure CO/sub 2/ and West Texas oil systems: Data base, correlations, and compositional simulation

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5604054

Kovarik, F S

This paper presents results from the study to improve the impure CO/sub 2/ minimum miscibility pressure (MMP) prediction capability. The MMP data base was obtained from laboratory slim tube runs. Rigorous criteria for MMP determinations were established. These data were correlated as a function of mole fraction of contaminants in CO/sub 2/, as a function of injection gas pseudocritical properties, and using a modified Peng-Robinson equation of state, with average errors in the range of 2 to 6 percent. The CO/sub 2/ impurities were N/sub 2/, C/sub 1/, C/sub 2/, C/sub 3/, C/sub 5/. Concentrations of impurities varied from 0 to 30 mole percent. Comparisons with literature data indicate that the correlations, although developed using only West Texas oils, can be generalized to include a wide spectrum of reservoir fluids. These correlations, when compared to others in the literature, are found to be superior for injection gas mixtures which contain nitrogen and methane contaminants. An ARCO developed compositional simulator was calibrated using slim tube and PVT data from the West Texas oil-CO/sub 2/ system. The model simulates recovery curves reasonably well and predicts the pure and impure CO/sub 2/ minimum miscibility pressures for West Texas oils to within 50-150 psi.

• OSTI ID: 5604054
• Report Number(s): CONF-8511174-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ABSTRACTS
ALKANES
ANALOG SYSTEMS
BENCH-SCALE EXPERIMENTS
CARBON DIOXIDE INJECTION
COMPUTERIZED SIMULATION
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
ENHANCED RECOVERY
EQUATIONS
EQUATIONS OF STATE
ERRORS
FEDERAL REGION VI
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GEOLOGIC DEPOSITS
HYDROCARBONS
IMPURITIES
LEADING ABSTRACT
MATHEMATICAL MODELS
MEETINGS
METHANE
MINERAL RESOURCES
MISCIBLE-PHASE DISPLACEMENT
NITROGEN
NONMETALS
NORTH AMERICA
OIL WELLS
OIL YIELDS
OPTIMIZATION
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DEPOSITS
QUANTITY RATIO
RECOVERY
RESERVOIR FLUIDS
RESERVOIR PRESSURE
RESOURCES
SIMULATION
SIMULATORS
SOLUBILITY
STIMULATION
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WELL STIMULATION
WELLS
YIELDS