摘要
近年来,烷基葡萄糖苷越来越多地被作为环保型防塌成膜处理剂应用于钻井液中,但其加量大,增加了钻井液成本,且极易生物降解,分子稳定性相对较差,限制了烷基糖苷在钻井液中的大范围应用。为此合成了抗高温抑制剂——磺甲基乙基葡萄糖苷(SEG),通过引入磺甲基的方法增强烷基葡萄糖苷的抑制性及高温稳定性。介绍了SEG的合成原理及方法,对产品进行了红外结构表征和热重分析(TGA),评价了SEG的抑制性、高温稳定性及润滑性,并与乙基葡萄糖苷(EG)进行了对比。实验结果表明,SEG的抑制性强,加量为5%～10%时能已达到很好的抑制效果,而EG的加量一般大于25%;与EG相比,SEG的高温稳定性强,能抗180℃高温;同时SEG延续了EG良好的润滑性能。
A high temperature shale inhibitor,SEG is synthesized for use at temperatures up to 180 ℃. SEG is a sulfomethyl ethyl glucoside which is synthesized by introducing sulfo-methyl group into alkyl glucoside to improve its inhibitive capacity and high temperature stability,aiming at replacing alkyl glucoside(ethyl glucoside,EG,for instance) because of its high concentration needed and poor stability. This paper introduces the methodology of SEG synthesis. Laboratory study(IR characterization and TGA analysis) shows that SEG has strong inhibitive capacity at a concentration between 5% and 10%,whereas EG may need a concentration of 25% for the same inhibitive capacity. Like EG,SEG also has good lubricity.
出处
《钻井液与完井液》
CAS
2010年第2期20-22,共3页
Drilling Fluid & Completion Fluid
