水平裂缝水平井的压力动态分析方法  

A Method of Dynamic Analysis of the Pressure of Horizontal Well with Horizontal Fracture

作　　者：许学雷[1] 徐献芝[2] 

机构地区：[1]安徽省气象局培训中心,安徽合肥230031 [2]中国科学技术大学力学与机械工程系,安徽合肥230027

出　　处：《苏州科技学院学报（自然科学版）》2004年第3期38-43,58,共7页Journal of Suzhou University of Science and Technology （Natural Science Edition）

基　　金：国家自然科学基金资助项目(10272100)。

摘　　要：根据渗流力学原理,提出了一种分析计算水平井伴有有限导流水平裂缝瞬变压力的方法,即在计算机软件中通过系统模拟与参数拟合的方法动态分析与研究水平裂缝水平井的压力。假设裂缝内流动的是一维流动,地层内流动是三维流动,让两个流场中解出的压力表达式在裂缝边界上相等以求出流量分布,最后求出地层的瞬态压力分布。通过计算比较了不同长宽比的水平裂缝对瞬态压力的影响,比较不同裂缝传导率对瞬态压力的影响。从导数曲线上可以看出代表有限导流水平裂缝特征的两个流动段,裂缝的不稳定流动过渡段和地层内的垂直径向流动段。According to the theory of permeation fluid mechanics,this paper presents a new method to analyze and calculate transient pressure in a horizontal well with finite conductivity horizontal fracture,i.e. to analyze and study the pressure of horizontal well with horizontal fracture dynamically by system simulation and parameter fit in the computer. Suppose that the flow in the fracture is one dimension flow and that in the stratum three dimensions,the pressure distribution is given by the rate of flow which could be offered by the pressure continuity property at the boundary of the two flow fields,finally the transient pressure distribution in the stratum as well. The influences given by horizontal fractures with different length and width and the different rate of fracture conductivity on the transient pressure are compared through calculation. The two flowing segments characterizing finite conductivity horizontal fracture,instable transitional flow in the fracture and radial flow in vertical plane of the reservoir are presented at the particular section of the derivative pressure curve.

关 键 词：在于水平井 水平裂缝 有限导流 瞬变压力 动态分析 

分 类 号：O357.3[理学—流体力学] TE353[理学—力学]