低渗气藏克林肯贝尔常数和非达西系数确定新方法  

NEW CALCULATION METHOD OF KELINBERG CONSTANT AND NON-DARCY COEFFICIENT FOR LOW PERMEABLE GAS RESERVOIRS

作　　者：吴英[1] 程林松[1] 宁正福[1] 

机构地区：[1]石油大学.北京

出　　处：《天然气工业》2005年第5期78-80,共3页Natural Gas Industry

基　　金：自然科学基金项目资助(项目批号:90210019);2003年教育部优秀青年教师资助计划项目资助。~~

摘　　要：文章通过室内物理模拟气体驱替岩心实验,从流体在低渗透多孔介质渗流机理出发,对所得实验数据进行处理,研究了一种确定低渗气藏气体渗流克林肯贝尔常数和非达西系数的新方法,并验证了气体在低渗气藏中的渗流存在滑脱现象,即克林肯贝尔效应,遵循非达西渗流规律。通过对实验数据进行回归分析,得到低渗气藏气体渗流克林肯贝尔常数大小与地层平均渗透率关系式,并绘制了求解低渗气藏气体渗流克林肯贝尔常数大小的理论图版。文章中所确定的克林肯贝尔常数和非达西系数数学表达式为建立气、水两相渗流数学模型、数值模型以及求解数值模型奠定了基础。With the indoor experiments of gas displacing cores by physical simulation, based on the percolation mechanism of fluid in low permeable porous medium, the ex perimental data are processed and a new calculation method of Kelinberg constant and non-Darcy coefficient is developed for low permeable gas reservoirs. Also, it is demonstrated the gas percolation in low permeable gas reservoirs has slippage phenomenon i. e. Kelinberg effect, which obey the Darcy percolation law. With the regression analysis of the experimental data, the relational expression between the Kelinberg constant of gas percolation and the average formation permeability for low permeable gas reservoirs is obtained and the theoretical chart board is made to calculate the Kelinberg constant of gas percolation for low permeable gas reservoirs. The mathematical expression to calculate Kelinberg constant and non-Darcy coefficient provides the ground for the establishment of mathematical and numerical models of gas/water bi-phase percolation and the solution of numerical model.

关 键 词：低渗气藏 贝尔 林肯 常数 低渗透多孔介质 气体渗流 实验数据 数值模型 平均渗透率 数学表达式 岩心实验 物理模拟 渗流机理 渗流规律 回归分析 理论图版 数学模型 两相渗流 行处理 关系式 文章 求解 驱替 滑脱 

分 类 号：TE377[石油与天然气工程—油气田开发工程] H059[语言文字—语言学]