稠油蒸汽驱封窜剂/驱油剂组合调驱技术  

Compound Profile-control and Oil Displacement Technology of Channeling Plugging Agent and Oil Displacement Agent for Steam Flooding of Heavy Oil

作　　者：单景玲 裴海华[1,2] 郑伟 谢昊君 郑家桢 张贵才 SHAN Jingling;PEI Haihua;ZHENG Wei;XIE Haojun;ZHENG Jiazhen;ZHANG Guicai(School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,P R of China;Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)),Ministry of Education,Qingdao,Shandong 266580,P R of China;CNOOC Research Institute CO.Ltd.,Beijing 100028,P R of China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]非常规油气开发教育部重点实验室(中国石油大学(华东)),山东青岛266580 [3]中海油研究总院有限责任公司,北京100028

出　　处：《油田化学》2022年第1期87-92,共6页Oilfield Chemistry

摘　　要：针对稠油蒸汽驱汽窜严重问题,研究了高温封窜剂+驱油剂组合调驱技术,以高温栲胶体系为蒸汽封窜剂,以磺酸盐表面活性剂SLB和阴-非离子表面活性剂CY复配体系为高温驱油剂,采用非均质双管物理模拟实验评价了封窜剂+驱油剂组合调驱提高蒸汽驱采收率效果。结果表明,高温栲胶封窜剂在250℃蒸汽驱冲刷15 PV后封堵率仍可达90%以上,封堵效果显著;SLB/CY(复配比2∶1)高温驱油剂经过300℃老化后仍可使油水界面张力降到10^(-3)mN/m以下。采用封窜剂+驱油剂组合调驱体系可有效封堵高渗管汽窜通道,保证后续注入驱油剂进入低渗管,最终综合采收率可以提高23.58%,有效地改善非均质地层蒸汽驱的开发效果。Aiming at the serious problems of steam channeling for steam flooding,the combination of high-temperature channeling plugging agent and oil displacement agent were prepared.The high-temperature-resistant channeling plugging agent was prepared with tannin extracts system,the sulfonate surfactant and anionic-nonionic surfactant were compounded to obtain high-temperature oil displacement agent,then the compound profile-control and oil displacement technology of channeling plugging agent and oil displacement agent on improving the recovery rate of steam flooding was investigated by heterogeneous double-tube physical simulation experiments.The results showed that the plugging rate of high temperature tannin extracts plugging agent could maintained above 90%after 15 PV of steam flooding flushing at the temperature of 250℃,exhibiting significantly plugging properties.After aging at 300℃,the high temperature oil displacement agent SLB/CY(2∶1)could still reduce the oil-water IFT to below 0.001 mN/m.In the experiment of heterogeneous double-tube by steam flooding of heavy oil,the combination of channeling plugging agent and oil displacement agent could effectively plug the steam channeling of high permeability tube and ensure the subsequent injection of oil displacement agent into low permeability tube,which could improve the final comprehensive oil drive efficiency by 23.58%and effectively improve the development effect of steam flooding in heterogeneous formation.

关 键 词：稠油 蒸汽驱 封窜剂 高温驱油剂 提高采收率 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]