考虑外边界影响的多层复合油藏试井解释数学模型  

Logging interpretation mathematical model of multi-bed composite reservoir considering the influence of boundary

作　　者：杨志刚[1] 陈玉祥[1] 王霞[1] 

机构地区：[1]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

出　　处：《石油化工应用》2011年第3期16-19,共4页Petrochemical Industry Application

基　　金：教育部博士学科点新教师类基金资助项目;项目编号:20095122120012

摘　　要：油田在注水时多层复合油藏由于地层非均质性从而导致舌进现象,简单油藏模型不能真实反映出井下情况,需要建立复杂的多层复合油藏数学模型进行试井解释。通过建立封闭边界条件下多层复合油藏模型,利用Stehfest数值反演得出Laplace空间解,绘制无因次压力及压力导数与无因次时间双对数理论图版,并详细分析多种情形下井底压力动态的影响因素,对油田多层复合油藏的开发具有一定的指导意义。When waterflooding multilayer composite reservoir,owing to formation heterogeneity, it leads into phenomenon of tonguing,simple reservoir model can＇t reflect downhole real situation,so we need to build complex multilayer composite mathematical reservoir model for well test interpretation.In models of closed boundary condition in multi-bed composite reservoir,we have given the Laplace space solutions in closed boundary condition.After in-depth research of the space solutions,through theoretical calculation, we have obtained the non-dimensional pressure and pressure derivative and the non-dimensional time log-log theoretic graphs and made detailed analysis of bottom-hole pressure dynamic factors in various situations.This paper has improved logging interpretation theory of this model,which has certain directive significance on development of multi-bed composite reservoir in oilfield.

关 键 词：多层复合油藏 LAPLACE空间解 影响因素 

分 类 号：TE353[石油与天然气工程—油气田开发工程]