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Journal Articles Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles Year : 2014

Efficient Scheme for Chemical Flooding Simulation


In this paper, we investigate an efficient implicit scheme for the numerical simulation of chemical enhanced oil recovery technique for oil fields. For the sake of brevity, we only focus on flows with polymer to describe the physical and numerical models. In this framework, we consider a black-oil model upgraded with the polymer modeling. We assume the polymer only transported in the water phase or adsorbed on the rock following a Langmuir isotherm. The polymer reduces the water phase mobility which can change drastically the behavior of water oil interfaces. Then, we propose a fractional step technique to resolve implicitly the system. The first step is devoted to the resolution of the black-oil subsystem and the second to the polymer mass conservation. In such a way, jacobian matrices coming from the implicit formulation have a moderate size and preserve solvers efficiency. Nevertheless, the coupling between the blackoil subsystem and the polymer is not fully resolved. For efficiency and accuracy comparison, we propose an explicit scheme for the polymer for which large time step is prohibited due to its CFL (Courant-Friedrichs-Levy) criterion and consequently approximates accurately the coupling. Numerical experiments with polymer are simulated : a core flood, a 5-spot reservoir with surfactant and ions and a 3D real case. Comparisons are performed between the polymer explicit and implicit scheme. They prove that our polymer implicit scheme is efficient, robust and resolves accurately the coupling physics. The development and the simulations have been performed with the software Puma- Flow [PumaFlow (2013) Reference manual, release V600, Beicip Franlab].
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hal-01068294 , version 1 (25-09-2014)



Benjamin Braconnier, Eric Flauraud, Quang Long Nguyen. Efficient Scheme for Chemical Flooding Simulation. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2014, 69 (4), pp. 585-601. ⟨10.2516/ogst/2013189⟩. ⟨hal-01068294⟩


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