Application of a general multiphase, multicomponent chemical flood model to ternary, two-phase surfactant systems
A general multiphase, multicomponent, chemical-flood model has been formulated. The set of mass conservation laws for each component in an isothermal system is closed by assuming local thermodynamic (phase) equilibrium along with Darcy's Law for multiphase flow through porous media and Fick's Law of diffusion. For a ternary, 2-phase system, a simple chemical-flood model is obtained that can be applied to surfactant flooding, polymer flooding, caustic flooding, etc. Numerical solutions to this model are presented for special cases of one-dimensional surfactant floods. These solutions exhibit oil recovery profiles similar to these observed in laboratory tests of oil displacement by surfactant systems in cores. The model includes the effects of surfactant transfer between aqueous and hydrocarbon phases and both reversible and irreversible surfactant adsorption by the porous medium. However, the effects of capillary pressure and diffusion are ignored. A numerical procedure was developed that results in 2 finite difference equations that are accurate to second order in the time-step size and first order in the space-step size. (23 refs.)
- Research Organization:
- Phillips Petroleum Co
- OSTI ID:
- 6687253
- Report Number(s):
- CONF-771014-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE-6727; Conference: 52. annual meeting of the Society of Petroleum Engineers, Denver, CO, USA, 9 Oct 1977
- Country of Publication:
- United States
- Language:
- English
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