JRGW凝胶体系中矿化度对体系的影响

Effect of Mineralization Degree on JRGW Gel System

水溶性酚醛树脂是聚合物凝胶类调剖剂中广泛应用的化学交联剂,也用于制备耐温耐盐的凝胶。该凝胶易在长期高温条件下易形成果冻状冻胶,在地层剪切作用下,其结构易被破坏,降低封堵高渗透率储层的作用;同时其流动性较差,使注入压力升高很快,甚至无法注入。

Water-soluble phenolic resin is a widely used chemical cross-linking agent in polymer gel profile control agent,which is also used to prepare temperature-resistant and salt-resistant gel.The gel is easy to form jelly-like gelatin under long-term high-temperature conditions,and the structure is easy to be damaged under the action of stratum shearing,then reducing the function of plugging high-permeability reservoirs.At the same time,due to its poor liquidity,it makes the injection pressure rise quickly,even unable to inject.