三重介质模型试井分析方法  

Well Testing Analysis Method for the Triple Porosity Reservoir

作　　者：程时清[1] 屈雪峰[2] 

机构地区：[1]江汉石油学院 [2]长庆石油勘探局研究院

出　　处：《油气井测试》1997年第1期5-11,73,共8页Well Testing

摘　　要：给出了一类三重介质油藏试井物理模型描述，建立了有效井径数学模型，通过拉普拉斯变换方法求出了井底压力的拉氏空间解以及早期、中期、晚期压力表达式，分析了压力变化特征，从理论上揭示三重介质油藏压力导数曲线存在两个凹陷，这两个凹陷分别反映了第一类孔隙介质与裂缝、第二类孔隙介质与裂缝的窜流特征。本文还提出了新的典型曲线拟合法。In this paper,the description of the triple porosity physical model is given- The effect wellbore racial mathematical model is established. By using the Laplace transform method,the solution of wellbore pressure in Laplace domain is got. The characteristics of the type curves are analyzed. In theory, there are two sags in the pressure derivative curve: the first response the cross flow character between the first porosity and the fracture system;the second response the cross flow character between the second porosity and the fracture system. New type curve matching tnethod is also presented in this paper.

关 键 词：试井分析 (三重介质) 物理模型 数学模型 井底压力 典型曲线拟合 

分 类 号：TE3[石油与天然气工程—油气田开发工程]