耐高温凝胶调剖体系成胶性能影响因素研究

Influencing Factors of Gel Forming Properties of High Temperature Gel Profile Control System

通过优化聚合物及交联剂类型及比例,研究对凝胶体系成胶性能及耐温耐盐性能的影响,研制出了适用于高温高盐油藏的凝胶调剖体系,并获得了主要性能指标。实验结果表明,所研究的高温凝胶体系在温度140℃、矿化度50000 mg·L^(-1)条件下,成胶强度高、稳定性好且脱水率低,满足海上油田调剖技术的应用需求。

By optimizing the type and proportion of polymer and crosslinking agent, influence on gel gelation properties,temperature and salt tolerance was studied, a gel system suitable for high temperature and high salinity reservoirs was developed, and the main performance indicators were obtained. The experimental results showed that the high temperature gel system had high gel strength, good stability and low dehydration rate under the condition of 140 ℃ and 50 000 mg·L^(-1)salinity, and met the application requirements of offshore oilfield profile control technology.