中高渗油藏开发流体势对剩余油分布控制机理  

Controlling mechanism on remaining oil distribution by development fluid potential in middle-high permeability reservoir

作　　者：赵俊威[1,2] 徐怀民[1,2] 徐朝晖[1,2] 魏启任 国殿斌[4] 刘云华[4] 杨辉[1,2] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中海石油(中国)有限公司深圳分公司,广东深圳510240 [4]中国石化中原油田分公司勘探开发研究院,河南郑州450000

出　　处：《中国矿业大学学报》2016年第3期535-543,共9页Journal of China University of Mining & Technology

基　　金：国家科技重大专项(2011ZX05009-003;2011ZX05001-003)

摘　　要：针对中国东部中高渗老油田开发中后期剩余油分布预测研究,采用受力分析、理论模型建立及实例研究的方法,对开发流体势控制的剩余油分布机理进行研究.以Hubbert流体势理论为基础,对已开发油藏流体进行受力分析,确定流体所具有的开发流体势能类型及地质意义,建立中高渗油藏不同开发阶段流体势理论模型,研发了开发流体势模拟软件,提出一种基于开发流体势场的剩余油表征方法.结果表明：不同类型开发流体势场对油水运动控制存在差异性,提出3类流体势低势区,即低位能、低压能及低界面能低势区,运用开发流体势原理对文33沙二下油藏进行实例解剖分析,提出3类低势区控制的剩余油富集区,即低位能低势区控制的＂阁楼型＂剩余油、低压能低势区控制的＂动态型＂剩余油和低界面能低势区控制的＂边缘型＂剩余油,相应低势区流体势分布为2.7×107~3.1×107 J/m3,有效预测了不同类型剩余油的空间分布.To predict the distribution of remaining oil in middle and late development period in middle-high permeability old oilfields in eastern China, controlling mechanism on remaining oil distribution by development fluid potential was studied through force analysis, theoretical model establishment and case study. The force status of fluid in development reservoir was ana- lyzed based on fluid potential theory proposed by Hubbert. The types of development fluid potential and its geological significance were determined, and development fluid potential theoret- ical model was established in different development stages in mid-high permeability reservoir. Fluid potential simulation software was developed, and a method for remaining oil characterization based on development fluid potential field was presented. The results show that there is difference between oil and water movement controlled by different development fluid potential types. Three kinds of low fluid potential area were put forward which included low gravitation- al, low pressure and low interracial potential area. Through the analysis on Wen 33 reservoir based on the theory, three types of remaining oil enrichment area were found which include ＂ loft＂ type of remaining oil controlled by low gravitational potential area, ＂dynamic＂ type con- trolled by low pressure potential area and ＂marginal＂ type controlled by low interfacial poten- tial area, the numerical range of low potential area is 2.7 × 107-3.1 × 107 J/m3. The method can effectively predict the spatial distribution of different types of remaining oil.

关 键 词：中高渗油藏 开发流体势 油水运动差异 低势区 剩余油分布 

分 类 号：TE122.2[石油与天然气工程—油气勘探]