Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ON THE NUMERICAL RESERVOIR SIMULATION OF SINGLE PHASE TWO COMPONENTS FLOW ALONG WITH INTERMEDIATE TIME STEPS
Submission Author:
João Gabriel Souza Debossam , RJ
Co-Authors:
João Gabriel Souza Debossam, Paulo de Tarço Honorio Junior, Grazione de Souza, Helio Pedro Amaral Souto
Presenter: João Gabriel Souza Debossam
doi://10.26678/ABCM.COBEM2019.COB2019-0958
Abstract
The goal of this work is to develop a numerical reservoir simulator to study an isothermal single-phase two-components porous media flow, and we use different time steps as a strategy for reducing computational time. The Peng-Robinson equation of state is used along with a volume translation to evaluate fluid properties. To solve the partial differential equations we use a discrete grid, and the Finite Difference Method with a time implicit formulation and a first-order upwind scheme. We also use an operator splitting technique, and the decoupled equations for the pressure and the molar fraction are solved using the Conjugate Gradient and Bi-conjugated Gradient Stabilized methods. Therefore, the pressure equation is solved just once while the molar fraction equation a couple of times for a full-time step. The first results show that the use of intermediate time steps may result in decreased computational effort.
Keywords
Compositional Flow, equation of state, Finite Difference Methods, Reservoir Simulation
