Thermodynamic modeling of phase and tension behavior of carbon dioxide-hydrocarbon systems
The gradient theory of inhomogeneous fluid is used to predict phase splits and compositions, interfacial composition profiles, and interfacial tension of liquid-liquid, liquid-vapor, and liquid-liquid-vapor equilibria in binary and ternary mixtures of CO/sub 2/ with propane and decane. The inputs of the theory are the equation of state of homogeneous fluid. An efficient computational algorithm is presented for simultaneously generating phase behavior, critical points, interfacial composition profiles, and tension between the phases. Most calculations are made with the Peng-Robinson equation of state and the geometric mixing rule for the influence parameters. Use of other equations of state and alternative schemes for choosing the influence parameters is explored. 51 refs.
- Research Organization:
- Univ of Minn, USA
- OSTI ID:
- 6412484
- Report Number(s):
- CONF-811023-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States); ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
ENHANCED RECOVERY
EQUILIBRIUM
FLUID INJECTION
HYDROCARBONS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
RECOVERY
THERMODYNAMICS
WELLS