直角断层板状双重介质油藏斜井试井模型研究  

Research on Inclined Well Test Model for Orthographic Fault Slabby Double Porosity Reservoir.

作　　者：张小龙 李晓平[2] 张旭[3] 谢维扬[2] 

机构地区：[1]中海石油(中国)有限公司上海分公司研究院,上海200030 [2]西南石油大学"油气藏地质及开发工程"国家重点实验室,四川成都610500 [3]玉门油田分公司,甘肃酒泉735019

出　　处：《油气井测试》2012年第6期1-4,73,共4页Well Testing

摘　　要：在Ozkan等人研究思路基础上,利用点源函数的思想建立了顶底封闭板状油藏试井模型并导出了其基本解。通过引入直角断层、双重介质系统及斜井,利用杜哈美叠加原理、镜像反映原理和Stehfest反演算法,建立并求解了直角断层板状双重介质油藏斜井试井模型,得到了考虑井筒储集和表皮效应影响的斜井无因次压力和压力导数与无因次时间的双对数曲线,讨论了该类油藏斜井渗流特征,分析了窜流系数、弹性储容比、井斜角度以及斜井中心到断层距离对井底压力响应图版的影响,为直角断层双重介质油藏中的斜井试井解释提供一定的理论基础。Based on the research of Ozkan et al.,a well test model of slabby reservoirs is proposed by using the point source function,and the basic solution is derived. Thereafter,by introducing the orthographic fault,double porosity system and inclined well,a well test model is established and solved.Log-Log curves is obtained,which considers the well-bore storage and skin effect.The flow characteristics are discussed.Also,the influence factors on pressure are analyzed,including the interporosity flow coefficient,storativity ratio,angle of inclination and the distance between inclined well center and fault.This study provides a theoretical basis for inclined well test interpretation in orthographic fault double porosity reservoir.

关 键 词：直角断层 双重介质 斜井 试井模型 压力动态 

分 类 号：TE319[石油与天然气工程—油气田开发工程]