含天然微裂缝变形介质油藏数值模拟方法  

A NEW METHOD OF NUMERICAL SIMULATION FOR NATURALLY MICROFRACTURED LOW-PERMEABILITY RESERVOIR

作　　者：程林松[1] 贺立湘[1] 李春兰[1] 牛光海[2] 

机构地区：[1]石油大学石油天然气工程学院,北京102200 [2]胜利油田有限公司滨南采油厂,山东滨州256606

出　　处：《石油大学学报（自然科学版）》2001年第5期50-52,共3页Journal of the University of Petroleum,China(Edition of Natural Science)

基　　金：国家重点基础研究项目 (G19990 2 2 5 0 9)

摘　　要：在微裂缝油藏开发过程中 ,油藏流体压力的上升或下降会导致微裂缝的张开或闭合 ,油藏的绝对渗透率随之发生变化 ,而且微裂缝的存在使油藏渗透率呈现较强的各向异性 ,从而影响油藏的开发。针对这些特性 ,分析了微裂缝的存在对油藏绝对渗透率大小和主轴方向的影响 ,建立了含天然微裂缝低渗透油藏的三维、三相数学模型及数值模拟模型 ,并在此基础上研制出了油藏模拟软件。运用该软件进行了典型油藏单元的实例计算 ,结果表明 ,开采初期微裂缝油藏日产油量比常规油藏高 ,而后期则比常规油藏低 。The effect of microfractures on the development of low-permeability reservoir is studied. A three-dimension and three-phase mathematical model is established to describe the reservoir containing microfractures, and a new simulator is developed. The software is applied to study the production of a typical unit. It is confirmed that the permeability of micro-fractured reservoir varies with the reservoir pressure. A mathematical model for this kind of reservoir is developed with consideration of these characters. The software is tested to be reliable by comparing its result with that of a commercial simulation software. In a typical injection-production unit, the software is applied to study the effect of microfracture. Some results are obtained and investigated.

关 键 词：微裂缝 变形介质 低渗透油藏 数学模型 数值模拟方法 

分 类 号：TE319[石油与天然气工程—油气田开发工程] TE348