Simulação de escoamento bifásico imiscível em reservatórios de petróleo usando o método dos volumes finitos

Abstract

A petroleum reservoir is a porous media composed by sedimentary rocks and void spaces occupied by water and hidrocarbonets components (gas and oil). It is frequently found in depths that make difficult measurements and characterization. The reservoir simulation is important for the oil industry therefore supplies it with some information about the basin: useful life, production capacity and better location of the injectors and producers wells. The present work presents a numerical solution using the finite-volume method and the IMPES (Implicit Pressure Explicit Saturation) technique to predict the two-phase flow (oil and water) inside petroleum reservoirs. The mathematical model employed is Black-Oil with the formulation in saturations, considering fluid injection. The iterative method Gauss-Seidel was used to solve the equations system generated for the pressure. Results of the oil saturation and pressure distributions as a function of the position and time inside porous media and the oil production are presented and analyzed.