油藏数值模拟软件的粗粒度层并行计算方法

本文针对目前油藏模拟模型大、求解精度高的特点，在迭代解法进行深入研究的基础上，对预处理方法、节点排序方法等进行了优化，优化出适于并行的最佳解法。以优化后的预处理共轭梯度法为基础，对多层二维二相模拟模型进行按层粗粒度并行。为解决存储及通讯问题，采用了压缩存储及压缩通讯技术，有效地提高了软件的并行效率。模型及实例计算表明并行化的多层二维二相模型具有较高的并行效率。通过对通讯量、层数、共享与分布等实用性影响因素分析，为大规模油藏模拟的并行化提供了有力的工具。

THE PARALLEL REALIZATION OF THE RESERVOIR SIMULATION MODEL USING COARSE GRANULARITY LAYER PARALLEL

Aiming at the characteristic of big model and high precision solution about reservoir simulation,the paper optimizes pretrement method,nod compositor method etc.to produce the best solution fitting for paralleling on the base of deep reserch about iterative solution.At the base of optimized pretrement method,the muti-layer two dimension two phase model has been paralleled as coarse granularity.In order to solve the problem of memory and communication,the compressed memory and communication technology is adopted and eficiently increased paralleling efficiency of the software.The computation outcome indicated that the paralleled muti-layer two dimension two phase model possesses upper parallel efficiency.By the analyses of influencing factors about communication capacity,the numbers of layer,sharling and distributing fashion etc.,a powerful tool is provided for the paralleling of cosmicaly reservoir simulation.