高速非达西渗流时三重介质油藏的压力响应  

Pressure responseof triple-porosity-media oil reservoirs with high-velocitynon-Darcy flow

作　　者：张德志[1] 王子胜[2] 战艾婷[1] 

机构地区：[1]中国石化股份胜利油田分公司地质科学研究院,山东东营257015 [2]中国石油大学(华东)石油工程学院,山东东营257061

出　　处：《油气地质与采收率》2009年第1期97-99,110+117-118,共6页Petroleum Geology and Recovery Efficiency

基　　金：“十五”国家重大科技攻关项目“塔河油田开发关键技术”(2001BA605A03)

摘　　要：针对近井地带高速非达西渗流的影响,建立了溶洞与井筒连通情况下三重介质油藏的试井解释模型。通过数学变换和差分离散,给出了模型的数值解。与达西渗流的试井特征曲线不同,压力导数曲线在第一过渡段后明显上翘,孔缝洞总系统径向流的压力导数曲线高于0.5水平线。而近井地带的渗流速度越大,其非达西渗流影响区域就越大;随着溶洞窜流系数和溶洞弹性储容比的减小,压力导数曲线的过渡段出现时间延迟且下凹程度加深的现象。在塔河油田S74井的应用效果表明,新建模型具有较高的可靠性和实用性。Considering the influence of high-velocity non-Darcy flow,a well test interpretation model for triple-porosity-media oil reservoirs was presented on the condition of limestone cave connecting with borehole.The numerical solution of the model was given by math transform and difference.Differing from the characteristic curve of well testing in Darcy flow,pressure derivative curve is upward obviously after the first transition period.The radial flow horizontal line of the total pore-crack-vug system is over 0....

关 键 词：高速非达西渗流 三重介质 窜流系数 弹性储能比 试井 

分 类 号：TE35[石油与天然气工程—油气田开发工程]