底水油藏高含水期水平井转注后对采收率影响研究  

Influence of Horizontal Well Injection on Recovery in High Water Cut Stage of Bottom Water Reservoir

作　　者：孙恩慧 郭敬民 赵秀娟 张东 SUN En-hui;GUO Jing-min;ZHAO Xiu-juan;ZHANG Dong(CNOOC Tianjin Branch, Tianjin 300452, China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《承德石油高等专科学校学报》2022年第1期24-26,31,共4页Journal of Chengde Petroleum College

摘　　要：为了分析底水油藏中水平井转注后对油藏采收率的影响,建立数模机理模型,对影响采收率的地质油藏因素进行敏感性研究,分析转注时机和注采比对油藏采收率的影响。结果表明,水平井转注后,可以提高整个油藏采收率,储层的非均质性越小、地层原油黏度越小、水平井转注时间越早、注采比越大,注水对油藏的增油效果越好。该研究对同一类型油藏提供一定的指导意义。In order to analyze the water injection effect of horizontal well in bottom water reservoir,the sensitivity of geological reservoir factors affecting water injection effect is studied,the influence of water injection timing and injection production ratio on stimulation effect is analyzed.The results show that recovery of the whole reservoir can be improved after horizontal well is converted into injection,but the effect of increasing oil is not obvious.The research shows that with decrease of the heterogeneity of reservoir and viscosity of formation oil,the effect of water flooding becomes better.The earlier water flooding time of horizontal wells is,the greater the injection production ratio becomes,and the effect of water injection and oil production is better.This study provides some guidance for the same type of reservoirs.

关 键 词：底水油藏 水平井 注水效果 数值模拟 敏感性分析 

分 类 号：TE357[石油与天然气工程—油气田开发工程]