Cr^(3+)凝胶在改善弱碱三元复合驱吸液剖面中的应用  

Application of Cr^(3+) gel to the improvement of the fluid entry profile of injection wells in weak alkali ASP flooding

作　　者：赵兰兰[1] 张可[1] 卢祥国[1] 庞红[1] 

机构地区：[1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《大庆石油学院学报》2007年第6期58-61,共4页Journal of Daqing Petroleum Institute

摘　　要：基于分析弱碱三元复合驱成垢样机理和现有调剖剂性质特征,提出Cr3+聚合物凝胶改善弱碱三元复合驱注入井吸液剖面技术路线,开展聚合物凝胶配方优选,并在大庆油田北三西块P56井进行调驱矿场试验.试验结果表明,聚合物凝胶具有除垢和封堵高渗透层的双重功能,高渗透层吸液量从调剖前的100%降低为54.9%.By analyzing scaling mechanism and the property of profile control agent,this paper presents technique for Cr3+ polymer gel of improving fluid entry profile of injection well in weak alkali ASP flooding.The optional formula,property evaluation and compatibility condition with weak alkali ASP flooding of polymer gel are studied and tested in Beisanxi P56 pilot of Daqing oilfield.The results of pilot test shows the polymer gel has double function of scavenge and blanking off high permeability zone.The fluid entry in high permeability layer is decreased from 100% to 54.9%.

关 键 词：弱碱三元复合驱油体系 结垢及除垢 铬凝胶除垢 吸液剖面 

分 类 号：TE357.43[石油与天然气工程—油气田开发工程]