Erscheint 12 Ausgaben pro Jahr
ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508
Indexed in
IMMISCIBLE DISPLACEMENT OF VISCOPLASTIC WAXY CRUDE OILS: A NUMERICAL STUDY
ABSTRAKT
The displacement of waxy crude oils obeying the Bingham model was numerically investigated in a water-flooding operation. A more accurate bundle-of-tubes model was developed based on the Rabinowitsch correction method to represent a porous medium. The classic Darcy's law was used as the governing equation using the concept of effective viscosity. Owing to the nondifferentiability of the Bingham model, regularized versions of this rheological model were used to calculate the effective viscosity for the Bingham model. Use was made of the implicit-pressure/explicit-saturation numerical method for solving the governing equations for the saturation profiles. Based on the results obtained in the present work, it is concluded that regularized models are well capable of representing displacement flow of Bingham fluids. It is also concluded that the viscosplastic behavior of waxy crude oils has a negative effect on the water-flooding operation.
-
Amiri A., Eslami A., Mollaabbasi R., Larachi F., Taghavi S.M., Removal of a yield stress fluid by a heavier Newtonian fluid in a vertical pipe, Journal of Non-Newtonian Fluid Mechanics, 268, 2019. Crossref