低渗压敏双重孔隙介质油藏试井分析  

Analysis of Pressure-Sensitive Dual-Porosity Reservoir with Low Permeability

作　　者：卓红 何秀玲[2] 王新海[2] 张学 

机构地区：[1]中国石油集团测井有限公司生产测井中心,陕西西安710201 [2]教育部油气资源与勘探技术重点实验室(长江大学),湖北武汉430100

出　　处：《油气井测试》2013年第3期17-21,76,共5页Well Testing

基　　金：中国石油天然气集团公司科技项目"非常规油气地球物理识别新方法研发及应用"(2011A3604;2011D-4104)资助

摘　　要：根据数值试井分析方法,建立了低渗压敏双重孔隙介质油藏渗流的数学模型,在考虑启动压力梯度、压力敏感效应、井筒储集效应和表皮系数的情况下,通过块中心网格和隐式差分格式对定解问题离散后求出了数值解。用该模型对西部某油田SP35-99井进行解释,结果表明,该模型可以较好地反映井底压力复杂的变化过程,能较准确地解释低渗压敏双重孔隙介质油藏流动期或恢复期的测试资料。According to numerical well test analysis method to establish the mathematical model of pressure sensitive dual porosity media reservoir of low permeability,under condition of considering the starting pressure gradient,and skin effects coefficient of pressure sensitive effect of well-bore storage,through the block center grid and implicit difference scheme after dispersing definite solution,numerical solution is reached.Explained by the model of oilfield SP35-99 well,the results show that the model can reflect the complex change process of the bottom hole pressure,and can explain the low permeability test data of pressure sensitive dual porosity reservoir flow period and recovery period accurately.

关 键 词：关键词 低渗压敏 双重孔隙 非均质油藏 试井分析 压力曲线 

分 类 号：TE353[石油与天然气工程—油气田开发工程]