Improved multiple-mixing-cell method for accelerating minimum miscibility pressure calculations
Improved multiple-mixing-cell method for accelerating minimum miscibility pressure calculations
复制标题
改进的多混合池方法可加速最小混溶压力计算
DOI：
10.2118/199360-pa
复制
发表时间：
--
期刊：
影响因子：
3.6
通讯作者：
Zhengbao Fang
中科院分区：
文献类型：
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作者：
Haining Zhao;Zhengbao Fang
提出了一种利用多重混合单元(MMC)方法加速计算最小混相压力的改进算法。MMC法被广泛用于精确计算基质金属蛋白酶。在本研究中，我们在原有MMC方法的基础上提出了一种加速算法，在计算过程中通过调整油气混合比，直接定位一定接触后的最短关键联络线。该算法包括以下几个关键部分：1)混合单元截断策略，避免了不必要的闪光计算；2)调整油气混合比，防止在单元截断过程中丢失最短关键联络线上的信息；3)压力搜索算法，以改进下一步压力估计；4)将全牛顿法与最近提出的迭代变量和传统的逐次替换法相结合，实现快速可靠的两相闪存。结果表明，改进后的MMC模型在计算最小均方根数时比原MMC方法更快。
An improved algorithm for accelerating minimum miscibility pressure (MMP) computation by use of the multiple-mixing-cell (MMC) methods is presented. The MMC method is widely used to accurately calculate the MMP. In this study, we proposed an acceleration algorithm towards original MMC method to directly locate the shortest key tie-line after a certain amount of contacts through the adjustment of the gas-oil mixing ratio during the calculation process. The algorithm contains the following key components: 1) mixing-cell cut off strategy to avoid unnecessary flash calculations; 2) gas-oil mixing ratio adjustment to prevent lost information on the shortest key tie-line during the cell cut-off process; 3) a search algorithm for pressure to improve the next step pressure estimate; 4) the fast and reliable two-phase flash implementation by combining full Newton method with recently proposed iteration variables and conventional successive substitution method. The improved MMC model is shown to be faster than the original MMC method in computing MMP.