采出液回注方式对驱油效果的影响研究——以辽河油田J区块为例  

Influence of produced liquid reinjection way on oil displacement effect:A case study from J block in Liaohe Oilfield

作　　者：姚振杰 马永晶 金志 闫文华[3] 郑晓松[4] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,西安710075 [2]陕西延长石油集团炼化公司延安炼油厂,陕西延安727406 [3]东北石油大学提高采收率教育部重点实验室,黑龙江大庆163318 [4]中国石油辽河油田分公司锦州采油厂,辽宁盘锦121209

出　　处：《岩性油气藏》2016年第3期133-136,共4页Lithologic Reservoirs

基　　金：国家自然科学基金项目"高浓度粘弹性聚合物在微观孔隙中的驱油机理研究"(编号:50874023)资助

摘　　要：辽河油田J区块多数油井高含水,储层非均质性强、层间矛盾突出,为了提高J区块的原油采收率,实施了二元复合驱。二元复合驱会产生大量采出液,而采出液中含有化学剂,排放会对环境造成污染,且处理成本较高。利用室内驱替实验来模拟二元复合驱的采出液,优化采出液的回注方式,研究二元复合驱采出液回注的可行性。结果表明:聚合物含量较高的采出液可直接作为二元复合驱油体系的前置段塞;采出液原样可直接作为后续保护段塞并后续水驱;采出液的不同回注方式均可提高化学驱采出程度(化学驱采出程度均大于20%),采出液的回注不仅可以节约聚合物的用量,同时可以解决采出液的污水处理问题。Because of high water cut for most oil wells,strong reservoir heterogeneity and serious interlayer contradiction,surfactant/polymer compound flooding was carried out to enhance oil recovery in J block,Liaohe Oilfield.However,there are large amounts of produced liquids during surfactant/polymer compound flooding,which is not environmental,and the dealing cost is high.Through simulating produced liquid of surfactant/polymer compound flooding,displacement experiment was proceeded to optimize reinjection method and study its feasibility.The results show that produced liquids with high content of polymer can be used as pre-slug directly and subsequent protection slug.Oil recovery can be enhanced exceed 20% with different reinjection methods.The produced liquid reinjection can not only save the amount of polymer,but also solve the problem of effluent dealing.

关 键 词：采出液 二元复合驱 回注方式 驱油效果 

分 类 号：TE357[石油与天然气工程—油气田开发工程]