“2+3”驱油技术提高稀油油藏采收率实验研究  

Study on"2+3"oil displacement technology in enhancing thin oil reservoir efficiency

作　　者：周雅萍[1] 刘其成[1] 刘宝良[1] 赵丽辉[1] 庞树斌[1] 

机构地区：[1]中油辽河油田公司勘探开发研究院,辽宁盘锦124010

出　　处：《化学工程师》2009年第6期58-62,共5页Chemical Engineer

摘　　要：针对辽河油田某特定稀油油藏所面临的高含水、注水效果差,剩余油难以采出,常规工艺措施无法解决油层深部和平面矛盾等问题,提出了应用"2+3"驱油提高原油采收率技术来改善其开发效果。通过对该区块油藏地质特征、开发现状、油水性质分析,开展了适合于该区块油品性质和油藏特点的"2+3"驱油技术的研究。实验结果表明:所筛选确定出的"2+3"驱油体系具有较好的封堵效率和洗油效果,同时其注入性能、与地层的配伍性和稳定性均能满足现场试验要求;物模研究结果证明了"2+3"驱油技术可进一步提高开发中后期非均质稀油油藏的原油采收率,也可作为水驱油藏开发后期的接替技术而推广应用。Because of high water-cut, poor water injection and difficulty in exploiting remaining oil in certain thin oil reservoir of Liaohe oil fields, the regular techniques couldn＇t resolve the problem such as deep oil layer and surface contradiction, the ＂2＋3＂ oil displacement technology was applied in order to enhance the recovery ratio of crude oil. By analyzing geological feature, developing situation and grease properties of this area, study on ＂2＋3＂ oil displacement technology which was suitable for oil properties and oil reservoir of this area Was carried out. The result indicated that the selected ＂2＋3＂ oil displacement system possesses preferable sealing efficiency and oil absorbing effect, meantime its injection capability, compatibleness and stability all could meet the needs of experiments; ＂2＋3＂ technology was also testified by physical model that it could further enhance the crude oil recovery ratio of heterogenous thin oil reservoir in middle and latter exploitation phases, it also can be applied and expended as substitute of water-drive reservoir technology in latter exploitation phases.

关 键 词：凝胶粘度“2+3”驱油体系 封堵效率 界面活性图 驱油效率 静态吸附 物理模拟 

分 类 号：TQ427.2[化学工程] TE357.46[石油与天然气工程—油气田开发工程]