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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.
Based on the additional correction method proposed by Watts for solving algebraic equations, a block correction technique is proposed to speed up the iterative convergence of reservoir pressure calculation in reservoir pressure numerical calculation.In the process of calculation, A correction value of the whole calculation block is changed to block correction to different calculation areas according to the boundary and the difference of the porosity of each calculation block.The calculation shows that under the same calculation conditions, The correction obviously speeds up the calculation of iterative convergence rate. Finally, this paper analyzes the reasons for the speed of convergence of block correction.