针对现有的降阻剂抗盐性能较差的问题,研制出一种新型表面活性剂类抗盐降阻剂.该降阻剂采用阴-阳离子表面活性剂复配而成,主表面活性剂为双子季铵盐阳离子表面活性剂,助表面活性剂为长碳链有机胺聚氧乙烯醚羧酸.室内实验表明,新型降阻剂抗盐性能良好,加量 0.04%时,在标准盐水配制的溶液中降阻率可达 63.95%.在四川地区的现场施工也取得较好效果,加量 0.06%时,平均降阻率可达 78.8%.%Aiming at the poor salt resistance of current friction reducers, a novel salt-resisting friction reducer was developed, which was prapared from anionic-cationic surfactants. The main surfactant is Gemini quaternary ammonium cationic surfactant,and the co-surfactant is long carbon chain organic amine polyoxyethylene ether carboxylate. Indoor experiments show that new salt-resisting friction reducer has good performance. When adding amount is 0.04%, the resistance-reducing rate is 63.95% in the solution. Field construction has also achieved preferable results in Sichuan:with an average resistance-reducing rate of 78.8% under 0.06% adding amount.
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