Efficient Parallel Computing Using Multiscale Multimesh Reservoir Simulation
Safian Atan, Hossein Kazemi, Donald H. Caldwell · SPE Annual Technical Conference and Exhibition · 2006
Abstract The multiscale, multimesh flow simulators have been designed for the sole purpose of running very large, heterogeneous reservoir, flow problems on massively parallel computers. This paper shows the flow simulation results and the corresponding CPU times. The multiscale flow simulator is written in Fortran 90/95 with OpenMP directives and compiled on high-performance SMP computers. The simulations were performed for several highly heterogeneous, channelized, reservoir cases with realistic rock-fluid interaction (viscous, capillarity, gravity, and compressibility) to evaluate the efficacy of the multiscale, multimesh simulation in parallel computing. It is shown that the aforementioned multiscale technique reduces computing time by several orders of magnitude, while maintaining the same accuracy as the conventional fine scale simulation.