加快油藏压力计算收敛速度的数值方法——分区块修正  

Numerical Technique for Promoting the Convergence Speed of Reservoir Pressure Calculation:Block Correction Within Multi-Domains

作　　者：贾欣鑫[1] 徐明海[1] 王胜[2] 胡国华[1] 梁卓[1] 

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《工程热物理学报》2014年第3期545-549,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51276199);国家科技重大专项子课题(No.2011ZX05017-004-HZ01)

摘　　要：本文以Watts提出的求解代数方程组的附加修正值法为基础,在油藏压力数值计算中,提出了一种加快油藏压力计算迭代收敛速度的分块修正技术.在计算过程中,将原来的整个计算区块一个修正值,改变成根据边界以及各计算区块孔隙度的不同,对不同的计算区域分块修正.通过计算表明,在同等计算条件下,分块修正技术较之单块修正明显加快了计算迭代收敛速度,最后本文对分块修正加快收敛速度的原因做了分析.A more advanced Multi-block correction technique to speed up convergence of numerical cMculation of reservoir pressure is presented in this paper, which is based on Watts＇s additive correction value to solve the algebraic equations. In this technique, the single block correction changed into multi-block correction. Depending on different boundary conditions and porosity which sits in the different blocks, the single block correction is changed into multi-block correction. The calculation for different test-eases indicates that in the same conditions the calculating convergence speed of Multi-block correction is faster than the single block correction. Finally, the reason is also discussed in the paper.

关 键 词：油藏数值模拟 压力修正 多块修正 TDMA算法 

分 类 号：TK121[动力工程及工程热物理—工程热物理]