Transient Pressure of Percolation Through One Dimension Porous Media with Threshold Pressure Gradient
-
摘要: 考虑启动压力梯度的影响,本文得到了在一维低渗透岩心和圆形油藏中一开一关渗流的数学方程,并进行有动边界问题的数值求解。以数值解为基础,分析了:1.渗流终态时井底(或岩心采液端)压力及压力影响半径(或距离)与启动压力梯度和关闭时间的关系,并给出相应的公式;2.压力峰值的传播规律。得到了有意义的结果,为低渗透油藏开发室内实验和现场应用提供理论基础。Abstract: This paper studies the transient pressure of percolation during one production and one shutting in one dimension porous media with threshold pressure gradient. The differential equations are derived and solved with numerical computation. Basing on numerical solution, It is analyzed that:1.the relation between the steady pressure at well bore (or at endpoint) and threshold pressure gradient shut-in time, and the correspondent formulae are derived;2.the regulation of transient pressure peak. The result is very useful and will help experiments and applications in development of the low permeadility reservoir with threshold pressure gradient.
-
[1] 戈尔布诺夫A T.异常油田开发[M](张树宝译).北京:石油工业出版社,1987,181 [2] 冯文光.非达西低速渗流的研究现状与进展[J].石油勘探与开发,1986,13(4):76～80 [3] 闫庆来,何球轩等.低渗透油层中单相液体渗流特征的实验研究[J].西安石油学院学报,1990,5(2):1～6 [4] 李凡华,刘慈群.含启动压力梯度的不定常渗流的压力动态分析[J].油气井测试,1997,6(1):1～4. -
点击查看大图
计量
- 文章访问数: 2372
- HTML全文浏览量: 114
- PDF下载量: 759
- 被引次数: 0
下载:
