组合调驱提高采收率技术实验研究  

Experimental study on enhanced oil recovery by combination of profile control and displacement

作　　者：王宏申 魏俊 张志军 石端胜 徐良 陈增辉 肖文凤 WANG Hongshen;WEI Jun;ZHANG Zhijun;SHI Duansheng;XU Liang;CHEN Zenghui;XIAO Wenfeng(CNOOC Energy Tech-Drilling&Production Co.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《复杂油气藏》2021年第2期80-84,共5页Complex Hydrocarbon Reservoirs

基　　金：国家科技重大专项“渤海油田化学驱配套工艺、方案优化研究及现场示范”(2016ZX05058-003-001)。

摘　　要：利用三维填砂物理模型,分别开展了聚合物凝胶、纳米微球/预交联颗粒、表面活性剂及三者组合调驱驱油实验,对其驱油效果、压力场分布进行了研究。研究结果表明,组合调驱段塞注入方式相比单一段塞注入效果更好。当以聚合物凝胶+纳米微球/预交联颗粒+表面活性剂的"堵调驱"段塞组合方式,各段塞用量占比分别为15%,60%,25%时,驱油效果最好,相比水驱可提高采收率38.75%。压力场的分布显示"堵调驱"段塞组合方式可有效封堵水流优势通道,并在注采井垂直方向形成近似等压条带,从而形成近活塞式驱替。Using 3 D sand-packing physical models,the oil displacement experiments of polymer gel,nano-microspheres/precrosslinked particles,surfactants,and their combination were carried out studies on oil displacement effect and pressure field distribution.The research results showed that the combined profile control and displacement slug injection method is better than single slug injection.The oil displacement effect is the best,where the combination is composed of the polymer gel,nano-microspheres/precrosslinked particles,surfactants and the amount of each slug is 15%,60%,and 25%,respectively.Compared with waterflooding,the recovery factor can be increased by 38.75%.The combination method can effectively block the dominant channel of water flow,and form approximately equal pressure strips in the vertical direction of the injection-production well,thus forming a near-piston displacement.

关 键 词：聚合物凝胶 预交联颗粒 表面活性剂 组合调驱 提高采收率 

分 类 号：TE357[石油与天然气工程—油气田开发工程]