特低渗透油藏可动流体百分数参数及其应用  

Percentage parameter of the movable fluid in ultra-low permeability reservoir and its application

作　　者：杨正明[1] 苗盛[1] 刘先贵[1] 黄冬梅[1] 祁晨琛[1] 

机构地区：[1]石油勘探开发科学研究院廊坊分院渗流流体力学研究所,河北廊坊065007

出　　处：《西安石油大学学报（自然科学版）》2007年第2期96-99,共4页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：中国石油天然气股份公司重点科技攻关项目(编号:030151-2-1)

摘　　要：针对特低渗透油藏特点,阐述了可动流体百分数参数的概念、测试原理及在特低渗透储层评价中的意义,分析了可动流体百分数与渗透率和驱油效率的关系,研究了特低渗透岩心在不同围压下可动流体百分数的变化规律,并对不同特低渗透开发区块进行可动流体百分数测试.研究结果表明:可动流体百分数是评价储层渗流能力及开发潜力的一个重要物性参数,可用可动流体百分数预测特低渗透油藏开发效果.对于特低渗油藏,可动流体百分数是一个比孔隙度和渗透率更能表征储层渗透率的参数.不同的围压,其可动流体百分数和束缚水饱和度是不同的.并对不同特低渗透开发区块进行了可动流体百分数测试.测试结果表明,用可动流体百分数预测特低渗透储层开发效果与油田现场实际开发效果一致,也验证了可动流体百分数概念的可行性.The concept and testing principle of the percentage parameter of the movable fluid in ultra-low permeability reservoirs and the application of it in the reservoir evaluation are described.The relationships between the movable fluid percentage and the permeability and displacement efficiency of cores are analyzed,and the varying law of the movable fluid percentage with the confining pressure of the cores is studied.It is shown that the movable fluid percentage is an important parameter for evaluating the seepage characteristic and development potential of ultra-low permeability reservoirs,it can more accurately describe the physical property of the ultra-low permeability reservoirs than permeability and porosity,and it can be used to predict the development results of the ultra-low permeability reservoirs.Under different confining pressures a core has different movable fluid percentages and irreducible water saturations.The movable fluid percentages of the different development blocks in Jilin and Daqing are measured.The development results of these blocks predicted by the measured movable fluid percentages accord with the practical development results of them,which also proves the feasibility of the parameter.

关 键 词：特低渗透油藏 可动流体 储层评价 变形介质 束缚水饱和度 

分 类 号：TE311[石油与天然气工程—油气田开发工程]