RT Journal Article ID 44ad6d71007bc9e0 A1 Salehi-Shabestari, Ali A1 Raisee, Mehrdad A1 Sadeghy, Kayvan T1 IMMISCIBLE DISPLACEMENT OF VISCOPLASTIC WAXY CRUDE OILS: A NUMERICAL STUDY JF Journal of Porous Media JO JPM YR 2017 FD 2017-05-16 VO 20 IS 5 SP 417 OP 433 K1 Bingham fluid K1 viscosity regularization K1 waxy crude oil K1 porous media K1 Buckley-Leverett problem K1 five-spot problem K1 water flooding AB 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. PB Begell House LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,6c6bbf067aa529c4,44ad6d71007bc9e0.html