非牛顿流体油藏数值模拟理论研究  

A numerical simulation research on reservoir with nonNewtonian fluid

作　　者：张茂林[1] 雷从众[2] 梅海燕[1] 肖春林[2] 郭平[1] 饶政[2] 

机构地区：[1]西南石油学院 [2]新疆油田分公司

出　　处：《中国海上油气（工程）》2004年第2期140-144,共5页China Offshore Oil and Gas

基　　金：系"油气藏地质及开发工程国家重点实验室"开放基金资助项目 (PLN990 2 )研究成果

摘　　要：根据非牛顿流体在多孔介质中渗流的流变特性 ,结合油藏注水开发的特点 ,建立了三维油、水两相非牛顿流体渗流数学模型。利用已开发的数值模拟软件对一个具有Bingham原油特性油藏注水开发的五点注采井网实例进行了数值模拟研究 ,论证了非牛顿流体油藏注水开发的一般性开采原则。在均质地层中 ,若保证相同的累积注水量 ,当牛顿水驱替牛顿原油时 ,原油注采强度对最终的开发指标影响不大 ;而当牛顿水驱替非牛顿原油时 ,原油注采强度对最终的开发指标影响较大。当驱替液为牛顿流体、被驱替液为非牛顿流体时 ,如果非牛顿流体表现为Bingham塑性流体或剪切变稀特性 ,大压差生产有利于提高原油的采出程度 ;如果非牛顿流体表现为剪切变稠特性 ,则应尽可能采用小压差生产。Based on the rhelogical behavior of non_Newtonian flow in porous media and the reservoir behavior in water_injection exploitation, a mathematical model has been developed for the non_Newtonian fluid 3D flow of two phases, i.e. oil and water. A developed software has been used to simulate a reservoir example which contains a Bingham fluid and is developed by a five_point injection and production system, and to demonstrate general principles of water_injection development for this type of reservoir. In a homogeneous formation and at the same cumulative volume of injected water, the production rate can not make a great effect on the final exploitation parameters when Newtonian water is driving Newtonian oil. By contrast, the effect may be guite great when Newtonian water is driving non_Newtonian oil. When the driving fluid is Newtonian and the driven fluid is non_Newtonian, a great production rate is favorable to improve oil recovery if the driven fluid has behaviors of Bingham plastic fluid or shear thinning, and a small production rate should be preferable if the driven fluid behaves with shear thickening.

关 键 词：非牛顿流体 油藏 多孔介质 注水开发 地层 剪切速率 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程] TE32