钻井液用新型纳米润滑剂SD-NR的制备及特性  

Preparation and properties of nanoparticle-based lubricant SD-NR for drilling fluids

作　　者：王伟吉[1] 邱正松[1] 钟汉毅[1] 黄维安[1] 董兵强 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《断块油气田》2016年第1期113-116,共4页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金面上项目"海洋深水浅层井壁稳定与水合物抑制的机理和新方法研究"(51474236);国家科技重大专项课题"大位移井强抑制高润滑水基钻井液技术研究与复杂地层井壁稳定技术研究"(2011ZX05021-004);中央高校基本科研业务费专项资金项目"页岩地层温敏型聚N-异丙基丙烯酰胺/纳米SiO2智能纳米粒子研究"(15CX06021A);中国石油大学(华东)研究生创新工程资助项目"页岩地层温敏型纳米聚合物微球智能封堵剂研究"(YCX2015011)

摘　　要：针对目前钻井液用常规润滑剂极压膜强度低、抗温性差、毒性大等突出问题,采用硅烷偶联剂KH570对纳米SiO_2进行超声表面改性,然后将其与表面活性剂S1按一定比例添加到菜籽油中,80℃下搅拌并加入适量稳定剂制备出纳米润滑剂SD-NR,通过红外光谱（FT-IR）和透射电镜（TEM）对产物进行了表征。性能评价表明,SD-NR加量为1%时润滑系数降低率大于85%,对钻井液流变性无明显影响,具有一定的降滤失性和抑制性,极压膜强度高,抗温达180℃以上,荧光级别在1～2级。In allusion to the drawbacks of conventional lubricant for drilling fluids such as low extreme pressure film intensity,inferior lubrication persistence, high-fluorescence and poor temperature resistance performance, in this article, firstly, we carry out ultrasonic surface modification on the nano-silica with silane coupling agent K570, then, we get SD-NR by putting surface modified nano-silica and surfactant into colleseed oil in a certain proportion. the product was characterized by FT-IR and TEM. Indoor experiment evaluation shows that the reducing rate of the friction coefficient is over 85% when the dosage of SD-NR is 1%, SD-NR has no adverse effects on the behavior of drilling fluid and can enhance fluid loss control and suppression performance to some extent. With higher extreme pressure film intensity and lubrication persistence, SD-NR can be used at temperature as high as 180℃,the fluorescence level is 1 to 2.

关 键 词：润滑剂 纳米SIO2 菜籽油 硅烷偶联剂 钻井液 

分 类 号：TE254.4[石油与天然气工程—油气井工程]