适合煤层气储层的滑溜水压裂液体系研究  

Research of Multifunctional Slickwater Fracturing Fluid System Suitable for Coalbed Methane Reservoirs

作　　者：张仰强 ZHANG Yangqiang(National Key Laboratory of Coal Mine Disaster Prevention and Control,Chongqing 400037,China;Chongqing Research Institute of China Coal Industry Group,Chongqing 400037,China)

机构地区：[1]煤矿灾害防控全国重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《石油化工高等学校学报》2025年第1期59-64,共6页Journal of Petrochemical Universities

基　　金：重庆市自然科学基金面上项目(CSYB2023NSCQ-MSX0577);中国煤炭科工集团有限公司科技创新创业资金专项重点项目(2022-2-TD-ZD008)。

摘　　要：将含有可降解基团和氧化金属离子的双功能还原剂作为氧化还原剂引发自由基聚合,合成聚合物减阻剂,从而在乙烯基聚合物骨架上构建了可降解基团;通过凝胶渗透色谱(GPC)对含温度敏感型偶氮基团的聚合物减阻剂进行分子质量测定,并对其降解行为进行了研究。结果表明,偶氮基团在高温下可被降解,同时具有较高的水解稳定性;聚合物主链上含有多个不稳定键;聚合物主链上含偶氮键的减阻剂与纯减阻剂一样具有良好的减阻性能;聚合物主链上含偶氮键的减阻剂一旦受到高温的影响会失去减阻性能。研究结果可为选择适合煤层气储层的低伤害、多功能的滑溜水压裂液体系提供参考依据。The authors used a bifunctional reducing agent containing degradable groups and oxidized metal ions as a redox agent to initiate free radical polymerization and synthesize a polymer damper to build degradable groups on the vinyl polymer backbone.The results showed that the azo groups were degradable under high temperature and also had high hydrolytic stability.The degradation behavior of polymeric drag reducers containing temperature-sensitive azo groups was characterized by gel permeation chromatography(GPC),which demonstrated that the polymer backbone contained multiple unstable bonds.It was also found that the drag reducers with azo bonds on the polymer main chain had as good drag reducer properties as the pure drag reducers.However,those with azo bonds in the main chain will lose their damping performance once subjected to high temperatures.This study provides a reference for the selection of low-injury multifunctional slickwater fracturing fluid systems suitable for shale gas reservoirs.

关 键 词：减阻剂水溶液 聚合物 低伤害 可降解 

分 类 号：TE357[石油与天然气工程—油气田开发工程]