A multilevel preconditioner and its shared memory implementation for a new generation reservoir simulator

作者：Wu Shuhong^*; Xu Jinchao; Feng Chunsheng; Zhang Chen-Song; Li Qiaoyun; Shu Shi; Wang Baohua; Li Xiaobo; Li Hua

来源：Petroleum Science, 2014, 11(4): 540-549.

DOI：10.1007/s12182-014-0370-1

• Multilevel
• preconditioner
• shared memory
• large-scale linear system
• reservoir simulation

As a result of the interplay between advances in computer hardware, software, and algorithm, we are now in a new era of large-scale reservoir simulation, which focuses on accurate flow description, fine reservoir characterization, efficient nonlinear/linear solvers, and parallel implementation. In this paper, we discuss a multilevel preconditioner in a new-generation simulator and its implementation on multicore computers. This preconditioner relies on the method of subspace corrections to solve large-scale linear systems arising from fully implicit methods in reservoir simulations. We investigate the parallel efficiency and robustness of the proposed method by applying it to million-cell benchmark problems.

• 出版日期2014-12
• 单位中国科学院数学与系统科学研究院; 湘潭大学; 中国石油天然气股份有限公司勘探开发研究院