考虑吸渗的双重介质中垂直裂缝井两相渗流  

Two Fhase Flow through Double-Porosity Media with Vertically Fractured Well Working

作　　者：邓英尔[1] 刘慈群[2] 王允诚[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,成都610059 [2]中科院渗流流体力学研究所,廊坊065007

出　　处：《重庆大学学报（自然科学版）》2000年第z1期86-89,共4页Journal of Chongqing University

基　　金：油气藏地质及开发工程国家重点实验室基金项目! (PLC990 1);中国博士后科学基金联合资助

摘　　要：建立了双重介质油藏中垂直裂缝井两相流体渗流数学模型 ,提出将水驱油运动的前沿作为活动边界处理的新思想 ,用有限差分和外推法求解带初边条件的积分 -微分方程。结果表明 :垂直裂缝井开发双重介质油藏时 ,吸渗作用对含水饱和度分布的影响较大 ,使水驱油运动前沿推进速度变慢 ,从而油井见水时间延长。见水前注入率不能太大 ,以充分发挥吸渗驱油的作用 。A mathematical model for flow of two-phase fluid through a vertically fractured well in a double-porosity reservoir in the direction of normal of the ellipses, which is a nonlinear equation with a moving boundary, is established according to concepts of turbulent ellipses and equivalent developing regulations. A new concept which takes the moving oil-water front as a boundary is presented. A numerical solution to it is given by using a finite difference method. Results show that the imbibition makes water break through the well later. The injection rate mustn't be too large before water breaks through the well so that the imbibition can play an important role in the reservoir.

关 键 词：双重介质 吸渗 垂直裂缝井 两相流体 有限差分 外推法 

分 类 号：O357.3[理学—流体力学]