砾岩油藏复合驱过程中化学剂的吸附滞留规律  

Adsorption and Retention Law of Chemicals Agent in Process of Compound Flooding in Conglomerate Reservoir

作　　者：栾和鑫 唐文洁[1,2,3,4] 陈艳萍 陈权生[1,2,3,4] 关丹[1,2,3,4] 阙庭丽 徐崇军[1,2,3,4] 云庆庆 帕提古丽·麦麦提[1,2,3,4] 焦秋菊 向湘兴[1,2,3,4] LUAN Huoxing;TANG Wenjie;CHEN Yanping;CHEN Quansheng;GUAN Dan;QUE Tingli;XU Chongjun;YUN Qingqing;PATIGULI·Maimaiti;JIAO Qiuju;XIANG Xiangxing(Research Institute of Exploration and Detection,Xinjiang Oilfield Branch Company,PetroChina,Karamay,Xinjiang 834000,P R of China;Key Labortary of Conglomerate Reservoir Exploration and Development,CNPC,Karamay,XinJiang 834000,P R of China;Xinjiang Laboratory of Petroleum Reserve in Conglomerate,Karamay,Xinjiang 834000,P R of China;Key Laboratory of Oilfield Chemistry Xinjiang Oilfield Sub-lab.,CNPC,Karamay,Xinjiang 834000,P R of China;Xingang Company of Xinjiang Oilfield Company,Karamay,Xinjiang 834000,P R of China)

机构地区：[1]中国石油新疆油田分公司实验检测研究院,新疆克拉玛依834000 [2]中国石油天然气集团公司砾岩油气藏勘探开发重点实验室,新疆克拉玛依834000 [3]新疆砾岩油藏实验室,新疆克拉玛依834000 [4]中国石油天然气集团公司油田化学重点实验室新疆油田分研究室,新疆克拉玛依834000 [5]新疆油田公司新港公司,新疆克拉玛依834000

出　　处：《油田化学》2021年第3期504-507,514,共5页Oilfield Chemistry

基　　金：国家科技重大专项“化学驱提高采收率技术”(项目编号2016ZX05010-004);中国石油科技重大专项“新疆和吐哈油田勘探开发关键技术研究与应用”(项目编号2017E-04-06)。

摘　　要：为研究砾岩油藏复合驱过程中化学剂在油藏运移过程中的吸附滞留规律,以不同液固比条件下研究复合驱油体系在砾岩油砂吸附后界面性能以及化学剂吸附损耗量。研究结果表明:不同固液比条件下,二元体系(0.2%KPS202+0.1%KYPAM2)/三元体系(0.3%KPS304+0.15%KYPAM1+1.2%碳酸钠)经过岩心砂4次吸附后界面张力未发生明显改变,平衡界面张力IFT_(120 min)均达到超低界面张力(10-3mN/m)的指标要求;二元体系/三元体系经过岩心砂4次吸附后各化学剂含量均随着吸附次数增加而减少,随着岩心砂含量增加各化学剂浓度逐渐降低。化学剂浓度随吸附次数增加降低幅度大小排序为:ASP碱浓度>ASP表面活性剂浓度>SP表面活性剂浓度>ASP聚合物浓度≈SP聚合物浓度。In order to research the adsorption and retention law of chemicals agent in process of compound flooding in conglomerate reservoir,the interfacial property and the adsorption retention of chemical agents of the SP system/ASP system after conglomerate core sand adsorption at different liquid-solid ratios was investigated.The results showed that at different liquid-solid ratios,the interfacial tension between SP system/ASP system and the crude oil changed a little after four times of the conglomerate core sand adsorption,and the equilibrium interfacial tension(IFT_(120 min))could reach the requirement of ultra-low interfacial tension,being of 10-3 mN/m.After four times of conglomerate core sand adsorption,the concentration of the chemical agents in SP system/ASP system decreased with the increase of adsorption times.The reduction degree of the concentration of the chemical agents was arraged as follows,alkali concentration of ASP system>surfactant concentration of ASP system>surfactant concentraion of SP system>polymer concentration of ASP system≈polymer concentration of SP system.

关 键 词：吸附滞留 固/液界面 复合驱 色谱分离 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]