【摘 要】
：
The injection of fuel-generated CO2 into oil reservoirs will lead to two benefits in both enhanced oil recovery (EOR) and the reduction in atmospheric emission
【机 构】
：
School of Energy Resources,Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation
【基金项目】
：
the National Science and Technology Major Projects;the Fundamental Research Funds for the Central Universities;the Project-sponsored by SRF for ROCS,SEM;the joint research on \"Investigation of Math
论文部分内容阅读
The injection of fuel-generated CO2 into oil reservoirs will lead to two benefits in both enhanced oil recovery (EOR) and the reduction in atmospheric emission of CO2.To get an insight into CO2 miscible flooding performance in oil reservoirs,a multi-compositional non-isothermal CO2 miscible flooding mathematical model is developed.The convection and diffusion of CO2-hydrocarbon mixtures in multiphase fluids in reservoirs,mass transfer between CO2 and crude,and formation damages caused by asphaltene precipitation are fully considered in the model.The governing equations are discretized in space using the integral finite difference method.The Newton-Raphson iterative technique was used to solve the nonlinear equation systems of mass and energy conservation.A numerical simulator,in which regular grids and irregular grids are optional,was developed for predicting CO2 miscible flooding processes.Two examples of one-dimensional (lD) regular and three-dimensional (3D) rectangle and polygonal grids are designed to demonstrate the functions of the simulator.Experimental data validate the developed simulator by comparison with lD simulation results.The applications of the simulator indicate that it is feasible for predicting CO2 flooding in oil reservoirs for EOR.
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