致密油藏有效驱替压力系统建立理论与技术  

Theory and Technology of Effective-Displacement-Pressure System of Tight Oil Reservoir

作　　者：程启贵[1,2] 雷启鸿[1,2] 熊维亮[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,陕西西安710018 [2]低渗透国家工程实验室,陕西西安710018

出　　处：《天然气地球科学》2012年第3期570-576,共7页Natural Gas Geoscience

基　　金：国家科技重大专项示范工程项目(编号:2011ZX05044)资助

摘　　要：伴随油气工业的发展,油气勘探开发逐步从常规油气向致密油气拓展。而在致密油藏开发中,建立有效的驱替压力系统尤为关键。根据致密储层渗流特征,形成以启动压力梯度、主流喉道半径、有用孔隙度和可动流体饱和度等评价参数为主的储层评价新方法,应用新的评价方法建立致密储层分类评价图版。同时,探讨致密油藏有效驱替压力系统建立的理论,研究油藏开发过程中驱替端点压力、末端流压、注采平衡系数等关键参数,指出有效驱替压力系统建立的具体途径和方法,开发实践验证了该方法的正确性。With development of oil and gas industry,the exploration and development of oil and gas have been expanded from conventional oil-gas reservoir to tight oil-gas reservoir.The establishment of effective-displacement-pressure system plays a fundamental role in the development of tight oil reservoir.Based on flow characteristics of tight reservoir,a new reservoir evaluation method as main evaluation parameters has been constructed,taking pressure gradient,mainstream throat radius,effective porosity,movable fluid saturation etc.We use this new evaluation method to establish the reservoir classification evaluation chart.Meanwhile,the theory of the effective-displacement-pressure system is explored.Some key parameters such as endpoint displacement pressure,terminal flow pressure,and balance coefficient between injection and production etc are also considered.We also point out how to setup the effective-displacement-pressure system by the specific ways and methods.The process of the development practice has prove its validity.

关 键 词：致密油藏 储层评价 有效驱替压力系统 注采平衡系数 

分 类 号：TE311[石油与天然气工程—油气田开发工程]