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.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
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)
关键词
油藏数值模拟
压力修正
多块修正
TDMA算法
numerical reservoir simulation
pressure correction
multi-block correction
TDMA al-gorithm
