摘要
在高温高盐的中原油田,用于封堵油水井管外窜、层间窜的常用堵剂难以达到施工要求。在原堵剂中加入复合增韧剂（CaCl2、改性橡胶、偶联剂按质量比2∶1∶1复配形成）制成DJS-2堵剂,最佳加量为0.5%。DJS-2堵剂具有直角稠化特性,凝结时间为0.5~1 h。与原堵剂相比,DJS-2堵剂的突破压力增加8.2 MPa,封堵率提高0.5%,抗压强度及封堵性能得到明显改善。在20~80℃,随温度的升高,堵剂抗压强度增加。现场应用13井次,措施有效率76.9%,共增油2999.3 t,有效期大于190 d。
At high temperature and high salinity Zhongyuan oil fields,common plugging agents which were used to plug outside channeling and interzonal crossflow could hardly satisfy the construction requirements.To solve this problem,DJS-2 plugging agent was prepared from previous plugging agent and composite toughener composed of CaCl2 salt,modified rubber and coupling agent in mass ratio 2∶1∶1.The optimum dosage of composite toughener was of 0.5%.DJS-2 plugging agent had right-angle-set property and setting time was shortened to 0.5～1 h.Compared to previous plugging agent,the breakthrough pressure of DJS-2 plugging agent was increased of 8.2 MPa and the plugging rate was improved by 0.5%,compressive strength and plugging performance were modified.With increasing temperature,compressive strength increased at 20～80℃.DJS-2 plugging agent was applied in 13 wells on site and the efficiency was of 76.9%.Cumulative quantity of oil was of 2999.3 t and the valid period was more than 190 d.
出处
《油田化学》
CAS
CSCD
北大核心
2010年第3期288-290,294,共4页
Oilfield Chemistry
关键词
堵剂
配方研究
直角稠化特性
抗压强度
封堵性
中原油田
plugging agent
formulations
right-angle-set property
compressive strength
plugging performance
Zhongyuan oil fields
作者简介
王志宝（1982-），男，助理工程师，2008年毕业于中国石油大学（华东）勘查技术与工程专业，从事油田开发方面的研究工作，通讯地址：457001河南省濮阳市中原路157号濮城油田开发研究项目，E—mail：djy1226@qq．com。
