改性磺甲基酚醛树脂MSP-1的合成及评价

Synthesis and Evaluation of Modified Sulfomethylated Phenolic Resin MSP-1

在分析磺甲基酚醛树脂应用现状和存在问题的基础上,从钻井液处理剂作用原理和分子结构设计的观点出发,在磺甲基酚醛树脂的分子结构上引入了吸附基团,成功地研制出了新型改性磺甲基酚醛树脂MSP-1。从室内评价结果来看,改性磺甲基酚醛树脂MSP-1在15%的盐水中降滤失效果与SMP-1相当,同时在30%盐水中有更好的降滤失效果,而且不必与SMK配伍评价,180℃老化后高温高压滤失量仅有17 mL;同时由于MSP-1含有强吸附基团,增加了酚醛树脂在膨润土上的吸附量,使得改性后的产品在15%盐水中基本不起泡,而且在钻井液中黏度效应较低,具有良好的推广应用前景。

This paper analyzes the status quo of the application and deficiency of the original sulfomethylated phenolic resin as a filtration reducer in water based drilling fluids.Based on the analysis,a new modified sulfomethylated phenolic resin,MSP-1,has been developed through molecular design to replace the old sulfomethylated phenolic resin.In the molecules of MSP-1 adsorption groups are introduced to render MSP-1 special functions to overcome the problems encountered in field use.Laboratory evaluation results show that in 15%brine drilling fluids,the performance of MSP-1 is comparable to the old sulfomethylated phenolic resin SMP-1,while in 30%brine drilling fluids,MSP-1 performs better than SMP-1.Without the use of the thinner SMK(a sulfomethylated tannin extract),MSP-1 alone can reduce the high temperature high pressure filtration rate of a 30%brine drilling fluid to only 17 mL after aging at 180℃.Since there are strong adsorption groups in the molecules of MSP-1,the amount of MSP-1 adsorbed onto the surfaces of clay particles is increased,almost eliminating the foaming effect of SMP-1 in 15%brine drilling fluids and greatly reducing the viscosity effect of MSP-1 in drilling fluids.These advantages of MSP-1 have rendered it good prospects for promotion and application.