高温高盐缝洞型油藏深部堵水体系研制与评价  

Development and evaluation of deep water plugging system in high temperature and high salt fracture-vuggy reservoir

作　　者：周顺明 高士博 金发扬[3] 齐宁[1] ZHOU Shun-ming;GAO Shi-bo;JIN Fa-yang;QI Ning(School of Petroleum Engineering in China University of Petroleum(East China),Qingdao 266580,China;Engineering Technology Institute,SINOPEC Northeast Oil and Gas Company,Changchun 130062,China;State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,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]中国石化东北油气分公司工程技术研究院,吉林长春130062 [3]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《应用化工》2023年第7期2048-2052,2058,共6页Applied Chemical Industry

基　　金：四川省科技计划项目(2019YFG0148)。

摘　　要：结合碳酸盐岩油藏储层特征,研发了一种适用于高温高盐缝洞型油藏的深部堵水体系,组成为2%~5%聚丙烯酰胺+1.0%~1.4%酚醛树脂+0.01%~0.014%偶氮二异丁氰,并加入2%~5%的改性橡胶粉作为增强剂。利用扫描电子显微镜观察发现,改性橡胶颗粒均匀地嵌入在聚合物交联网络中,大幅度增强了堵剂的稳定性。结果表明,堵剂耐温可达140℃,耐矿化度高达2.5×10^(5)mg/L,体系突破压力梯度可达8.05 MPa/m,封堵率高达90.33%,满足高温高盐油藏的堵水作业需求。A deep water plugging system suitable for high temperature and high salt fracture-cavity carbonate reservoir is developed.The system consisted of 2%~5%PAM+1.0%~1.4%phenolic resin+0.01%~0.014%AIBN+2%~5%modified rubber powder.Observed by SEM,the modified rubber particles are evenly embedded in the polymer cross-linked network,which greatly enhanced the stability of plugging agent.The results show that the temperature resistance of the plugging agent can reach 140℃,the salinity resistance can reach 2.5×10^(5) mg/L,the breakthrough pressure gradient can reach 8.05 MPa/m,and the plugging rate is up to 90.33%.This system meets the requirements of water plugging operation in high temperature and high salt reservoir.

关 键 词：高温高盐 接枝改性 深部堵水 性能评价 

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