碳酸盐岩油藏冻胶调驱体系研究与效果评价  

Research and effectiveness evaluation of freeze-thaw gel flooding system in carbonate reservoirs

作　　者：徐文娟 周政君 季闻 XU Wenjuan;ZHOU Zhengjun;JI Wen(Tianjin Branch CNOOC(China)Co.,Ltd.,Tianjin 300452,China;Engineering Technology Branch of CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452 [2]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：《石油化工应用》2024年第7期40-44,共5页Petrochemical Industry Application

基　　金：中海石油(中国)有限公司重大项目“渤海水驱稠油油田特高含水期深度挖潜关键技术研究”(KJZH-2024-2204)。

摘　　要：针对双重介质碳酸盐岩油藏,研制了高强度耐温耐盐冻胶调驱体系,完成体系的系统性能评价。冻胶调驱体系封堵率在96.00%以上,热稳定性超过21个月,远远大于常规冻胶调驱体系;开展了裂缝封堵规律和提高动用程度规律研究,绘制冻胶调驱体系堵剂黏度、注入线速度和注入量对最终提高动用程度的影响规律图版,图版工作范围为堵剂黏度:55~105 mPa·s、注入线速度:1~5 mm/min、注入量:0.1~0.5 FVV,对双重介质碳酸盐岩油藏调驱具有重要指导意义。According to the dual media carbonate oil reservoir,a high-strength,temperature and salt-resistance gel was developed,and the system performance evaluation of the gel was completed.The blocking rate of the gel is more than 96.00%,and the thermal stability is more than 21 months,which is much larger than that of the conventional gel.Research on the rules of fracture blocking and the rules of improving the degree of utilization has been carried out,and the influence of plugging viscosity,the injection line speed and the injection volume on the final improvement of the degree of utilization of the gel has been plotted.The working range of the plate is 55~105 mPa·s,1~5 mm/min,and 0.1~0.5 FVV,which is of great significance for the mobilization of dual-media carbonate reservoirs.

关 键 词：双重介质 碳酸盐岩 耐温耐盐 冻胶 调驱机理 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]