A Mass-Conservative Sequential Implicit Multiscale Method for Isothermal Equation-of-State Compositional Problems
A Mass-Conservative Sequential Implicit Multiscale Method for Isothermal Equation-of-State Compositional Problems is a scholarly work, published in 2018 in ''SPE Journal''. The main subjects of the publication include nonlinear system, conservation of mass, Reservoir simulation, equation of state, statistical physics, grid, mechanics, finite-volume method, mathematical optimization, residual, computer science, flow, carbon sequestration, enhanced oil recovery, isothermal process, multiscale modeling, applied mathematics, mathematics, and solver. The authors use basis functions computed using restricted smoothing to allow for generally unstructured grids.The new method is verified against existing research and commercial compositional simulators using a simple conceptual test case and also using more-complex cases represented on both unstructured and corner-point grids with strong heterogeneity, faults, and pinched-out and eroded cells.The SI method and the implementation described here represent the first demonstrated multiscale method applicable to general compositional problems with complexity relevant for industrial-reservoir simulation..