摘要
针对目前对层状油藏渗流规律的研究普遍集中在均质油藏方面,忽视对双孔介质层状油藏研究的现状,在Bourdet对具有层间窜流的单孔介质双层油藏渗流模型和Warren-Root对单层油藏双孔介质渗流模型研究的基础上,认真分析了具有层间窜流的双重孔隙介质双层油藏的复杂渗流机理,经过认真、严格、详细的推导,首次合理地建立了该类油藏的渗流模型,并对模型进行了正确求解,利用Stehfest数值反演和计算机编程,绘制了井底流压的典型曲线,最后从渗流机理和渗流过程上分析了地层参数对曲线形态的影响。所获得的结果有助于正确地认识此类复杂油藏的渗流机理,可用于试井分析、油藏产能研究等,为合理开发此类油藏提供科学的理论依据。
On the basis of Bourdet's research on the reservoir model with single porosity and two layers and Warrant-Root's research on the reservoir model with single layer and dual-porosity,aiming at the present study focusing on homogeneous reservoirs and the research on layered reservoirs with dual-porosity media being neglected,the authors of the paper analyze the complex flow mechanism of two-layered reservoirs with dual-porosity media and interface crossflow,through strict and detailed derivation,the flow model of this types of reservoirs is firstly built up,and the model is solved.By means of Stehfest numerical inversion and computer programming,the typical curves of bottom hole flow pressure are plotted.Finally,the influence of formation parameters on curve shape is analyzed according to flow mechanism and process.The achieved conclusion will be helpful to correctly recognize the flow mechanism of the reservoirs,and can be used to analyze well testing and reservoir deliverability.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期178-182,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
教育部博士点基金项目(20040615004)
四川省学术和技术带头人培养基金(2200320)
关键词
层状
窜流
双孔介质
压力动态
数值反演
layered reservoir
crossflow
dual porosity media
pressure performance
numerical inversion
