涠洲高渗油藏冻胶泡沫体系优选及室内评价  

Optimization and Performance Evaluation of Frozen Gel Foam System for Weizhou High Permeability Reservoir

作　　者：杜若飞 张云宝[1] 葛嵩 李文涛 董宏超 单云飞 边永胜 DU Ruofei;ZHANG Yunbao;GE Song;LI Wentao;DONG Hongchao;SHAN Yunfei;BIAN Yongsheng(Key Laboratory of Enhanced Oil Recovery,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Zhanjiang Branch of CNOOC Co.,Ltd.,Zhanjiang Guangdong 524057,China)

机构地区：[1]东北石油大学提高采收率重点实验室,黑龙江大庆163318 [2]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《当代化工》2024年第7期1519-1524,共6页Contemporary Chemical Industry

基　　金：黑龙江省自然科学基金项目(项目编号:LH2022E021);教育部“春晖计划”国际合作科研项目(项目编号:HZKY20220311);海南省重点研发专项“揭榜挂帅”项目(项目编号:ZDYF2024GXJS263)。

摘　　要：为找到耐温抗盐性能优秀、调剖控水能力优良且成冻时间可控的冻胶泡沫体系,进而应用于涠洲高渗高含水油藏,采用Waring Blender法、Sydansk代码法以及物理模拟实验以起泡体积、半衰期、成冻强度、阻力系数及分流量为评价指标,优选出0.2%阴离子型聚合物(KY-6)+0.6%有机铬交联剂(YG107)+0.6%十二烷基苯磺酸钠(BHSN12)+1%缓速剂乳酸钠的冻胶泡沫体系。结果表明:该体系耐温耐盐性能优秀;加入缓速剂后可实现成冻可控(约15 h成冻,强度为G级),稳定时间长;在目标油藏渗透率范围内封堵率大于99%,具有很好的封堵控水作用;渗透率级差为3.2~15.8,能有效注入并封堵强水窜通道,具有优秀的调剖控水能力,其中渗透率级差为7左右调剖效果最优。In order to find a freezing gel foam system with excellent temperature and salt resistance,excellent profiling and water control ability,and controllable freezing time for application in Weizhou high-seepage and high-water-bearing reservoirs,the Waring Blender method,the Sydansk code method,and physical simulations were used to evaluate the evaluation indexes of foaming volume,half-life,freezing strength,resistance coefficient,and flow rate,and a preferred freezing gel foam system was selected:0.2% anionic polymer(KY-6)+0.6% organochromium crosslinker(YG107)+0.6% sodium dodecylbenzene sulfonate(BHSN12)+1% retarder sodium lactate frozen gel foam system.The results showed that the system had excellent temperature and salt resistance;after adding retarder,it could realize controllable freezing(about 15 h freezing,strength of G grade) and long stabilization time;the blocking rate was more than 99% in the range of permeability of the target reservoir,which had good blocking and water control;within the range of permeability gradation difference of 3.2~15.8,it could effectively inject and block the channel of strong water runoff,in which the permeability gradation difference was about 7,and it had the best effect in profile control.

关 键 词：耐温抗盐 高渗油藏 提高采收率 调剖控水 冻胶泡沫 热稳定性 性能评价 

分 类 号：TQ317.3[化学工程—高聚物工业] TE357.46[石油与天然气工程—油气田开发工程]