基于系统稳定性的水驱曲线合理直线段选取新方法
发布时间：2018-11-22 14:25
【摘要】：准确选取水驱曲线合理直线段对于运用水驱曲线法正确预测油藏开发指标具有重要意义。根据稳定渗流理论,推导了体积波及系数与含水率、累计产液量之间的数学模型,提出了基于油藏系统稳定性的水驱曲线合理直线段选取新方法。当含水率函数与累计产液量的双对数曲线呈现斜率为-1的直线时,油藏即处于稳定水驱阶段,该阶段即为水驱曲线的合理直线段。在渤海SZ油田进行了实际应用,结果表明,该方法能够直观、定量判断水驱曲线合理直线段,从而避免了直线段选取时的主观性和随意性,预测结果更为客观可靠,具有推广应用价值。
[Abstract]:It is of great significance to select the rational straight line section of water drive curve for correctly predicting reservoir development index by using water drive curve method. According to the theory of steady percolation, the mathematical model of volume sweep coefficient, water cut and accumulative liquid production is derived, and a new method for selecting rational straight line section of water drive curve based on reservoir system stability is proposed. When the double logarithmic curve of water cut function and accumulative liquid production shows a straight line with slope of -1, the reservoir is in the stable water drive stage, which is the reasonable straight line of the water flooding curve. The practical application in SZ oilfield of Bohai Sea shows that the method can directly and quantitatively judge the rational straight line segment of the water drive curve, thus avoiding subjectivity and randomness in the selection of straight line segments, and the prediction results are more objective and reliable. It has the value of popularization and application.
【作者单位】： 中海石油(中国)有限公司天津分公司渤海石油研究院;
【基金】：国家科技重大专项课题“海上油田丛式井网整体加密及综合调整油藏工程技术应用研究”(2011ZX05024-002);“海上油田丛式井网整体加密及综合调整油藏工程技术示范”(2011ZX05057-001)
【分类号】：TE357.6
，
本文编号：2349631
[Abstract]:It is of great significance to select the rational straight line section of water drive curve for correctly predicting reservoir development index by using water drive curve method. According to the theory of steady percolation, the mathematical model of volume sweep coefficient, water cut and accumulative liquid production is derived, and a new method for selecting rational straight line section of water drive curve based on reservoir system stability is proposed. When the double logarithmic curve of water cut function and accumulative liquid production shows a straight line with slope of -1, the reservoir is in the stable water drive stage, which is the reasonable straight line of the water flooding curve. The practical application in SZ oilfield of Bohai Sea shows that the method can directly and quantitatively judge the rational straight line segment of the water drive curve, thus avoiding subjectivity and randomness in the selection of straight line segments, and the prediction results are more objective and reliable. It has the value of popularization and application.
【作者单位】： 中海石油(中国)有限公司天津分公司渤海石油研究院;
【基金】：国家科技重大专项课题“海上油田丛式井网整体加密及综合调整油藏工程技术应用研究”(2011ZX05024-002);“海上油田丛式井网整体加密及综合调整油藏工程技术示范”(2011ZX05057-001)
【分类号】：TE357.6
，
本文编号：2349631
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