裂缝性油藏窜流函数及形状因子研究(一)  

Research on Transfer Function and Shaping Factors for Fractured Reservoir(I)

作　　者：李晓良[1] 何勇明[2] 金潮苏[3] 栾万里[4] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]成都理工大学博士后科研流动站,四川成都610059 [3]山东胜利职业学院,山东东营257000 [4]辽河石油勘探局钻井一公司,辽宁盘锦124010

出　　处：《石油钻探技术》2008年第1期73-75,共3页Petroleum Drilling Techniques

摘　　要：提出了一种推导双重介质模型中裂缝和低渗基质之间窜流函数以及相应形状因子的新方法,即用单相窜流方程的微分形式和压力扩散方程的解析解来推导瞬时压力扩散方程中形状因子的解析解。该方法避免了很多在假设条件下推导窜流函数和形状因子所带来的局限性,并能很好地解释基质中非线性压力的梯度问题,获得了没有假设拟稳态情况下的一套、二套和三套裂缝的窜流函数及形状因子的表达式,并求得了其解析解,可以以此解释拟稳态情况下的压力特征。A new method for transfer function and shape factors controlling mass transfer between the fracture and matrix system in fractured reservoirs were derived, namely an analytical solution to shape factors of transient pressure diffusion equation using differential form of single phase transfer equation and analytical solution to pressure diffusion equation. The limitation of transfer function and shape factors derived using a lot of assumption can be avoided using this method. Further, it better explain the non-linear pressure gradients in the matrix very well. Transfer function and shape factors with one set, two sets and three sets of fractures without the assumption of pseudo steady were derived, and its analytical solution which can be used to explain the pressure characteristics in pseudo-steady state was obtained.

关 键 词：裂缝性油气藏 低渗透油气藏 窜流 形状因子 

分 类 号：TE344[石油与天然气工程—油气田开发工程]