华池油田长3岩性油藏流动单元划分及其合理性验证  

The Flow Units Division and Reasonableness Verification of Chang 3 Lithologic Oil Reservoir of Huachi Oilfield in Ordos Basin

作　　者：朱玉双[1] 柳益群[1] 赵继勇[1] 朱圣举[2] 赵向宏[2] 徐森[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室 [2]长庆油田公司勘探开发研究院,西安710021

出　　处：《沉积学报》2008年第1期120-127,共8页Acta Sedimentologica Sinica

基　　金：国家重点基础研究发展计划(973)项目(2003CB214603)

摘　　要：提出岩性油气藏流动单元划分及其合理性验证方法。研究中针对华池油田长3岩性油藏的特点,采取控制流体渗流的主要参数,对流动单元进行了划分。同时采用数学方法、微观渗流实验方法、宏观生产动态分析方法对流动单元划分的合理性进行了验证。研究结果表明:1)研究区流动单元可以分为三类,分别为A类、B类和C类。不同流动单元所处相带位置不同,物性也不同。2)判别分析的方法、渗流实验方法和生产动态分析法是验证流动单元划分合理性的有效手段。研究区流动单元的正判率达95%以上;相同流动单元具有相似的微观渗流特征及生产动态特征,不同流动单元的微观渗流特征及生产动态特征明显不同。3)C类流动单元及注采井间不同流动单元对接区域是剩余油的主要富集区,应注意挖潜,提高油层采收率。To provide a reasonable means for the flow units division and verification Considering the characteristics of Chang 3 lithologic oil reservoir of Huachi oiLfield in lithologic oil and gas reservoir. in Ordos Basin, the main parameters that controlling fluid flowing has been taken to divide flow units after formation division and facies differentiation, and mathematical method, micro-flow experiments, and dynamic analysis in macro has been adopt to verify the reasonableness of the flow units division in the research. The study results show ： 1 ） three kinds of flow units are divid- ed, they are called as A, B and C. The A flow unit is always located in the main face tract of underwater distributary river course, and its physical property is better. The C flow unit is always located in the edge of underwater distributary river course, and its physical property is not so good. The B flow unit is always in the middle of A flow unit and C flow unit no matter the face position or its physical property; 2） The methods of discrimination analysis, micro-flow experiments, and dynamic analysis in macro are effective to verify the reasonableness of the flow units division. The correct rate of 100 data points that be selected randomly have been over 95% ; the same flow units have similar micro- flow characteristics, and different flow units are obvious disparate, which reflect in the order of fluid entry, the fluid displacement mode, and the remaining oil types; the product dynamic characters are related with the classification of flow units, reflecting in initial production, the hygroscopic state of water wells, and response and breakthrough of oil wells ; 3 ） C flow units and the joint areas of different flow units between injection well and production well will be the main oil-rich of residual oil. And an injection well had better be opened the same flow units at the same time for reducing the water level of interference, and as while the same flow units should be opened to reducing the injected water finger advan

关 键 词：岩性油藏 流动单元划分 合理性验证 判别分析 微观渗流特征 宏观生产动态 剩余油 

分 类 号：TE311[石油与天然气工程—油气田开发工程]