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硼酸盐是水力压裂施工中植物胶压裂液中最常用的交联剂之一,但是其交联时间非常短,耐温性能差,为了合成具有缓交联性能并且抗温性较好的交联剂,在实验室里以硼酸为起始原料,经过与有机碱反应生成硼酸酯后,在催化剂作用下与有机配位体进行络合反应,最终制备了具有缓交联、抗温性好的交联剂。考察了以硼酸酯为原料合成抗温交联剂的反应条件,得到了合成交联剂的最佳工艺。反应温度60~65℃,合成反应时间是3h左右,催化剂用量是0.3%(质量比),络合配位剂用量是35%(质量比)。
Borate is one of the most commonly used cross-linking agents in the fracturing fluid of hydraulic fracturing in hydraulic fracturing. However, the crosslinking time is very short, the temperature resistance is poor, and the borate has a slow cross-linking performance and a good temperature resistance Of the crosslinking agent, boric acid in the laboratory as the starting material, after the reaction with the organic base borate ester, the role of the catalyst with the organic ligand complexation reaction, and finally prepared with slow cross-linked, anti- Good temperature crosslinking agent. The reaction conditions of synthesizing temperature-resistant cross-linking agent with boric acid ester as raw materials were investigated, and the best process of synthesizing cross-linking agent was obtained. The reaction temperature is 60 ~ 65 ℃, the reaction time is about 3h, the amount of catalyst is 0.3% (mass ratio) and the amount of complexing agent is 35% (mass ratio).