端氨基聚醚抑制黏土水化膨胀与应用  

Amine-Terminated Polyether Inhibiting Clay Hydration and Swelling and Its Application

作　　者：郭文宇[1] 彭波 GUO Wenyu;PENG Bo(School of Chemistry and Chemical Engineering, Mianyang Teachers'College, Mianyang, Sichuan 621000)

机构地区：[1]绵阳师范学院化学与化学工程学院,四川绵阳621000

出　　处：《绵阳师范学院学报》2022年第2期45-49,63,共6页Journal of Mianyang Teachers＇ College

基　　金：2021年度四川省科技厅应用基础研究项目(21YYJC1761);2019年度绵阳师范学院科研启动项目(QD2019A09).

摘　　要：通过X射线衍射和红外光谱实验,考察了端氨基聚醚D230和T403在黏土上的吸附情况.同时,研究了端氨基聚醚作为钻井液处理剂抑制黏土水化分散和膨胀行为.结果表明,端氨基聚醚通过阳离子交换作用插入黏土晶层间,形成致密的疏水单分子聚合物层,排除层间水分子.添加端氨基聚醚后,黏土的水化分散和膨胀程度得到有效控制,黏土颗粒尺寸变大,并且钻井液保持较低的流变值.D230性能要优于T403.Adsorption of amine-terminated polyethers including D230 and T403 on bentonite clay was investigated by the experiments of X-ray diffraction and infrared spectrum.Simultaneously,the inhibition behaviors of clay dispersion and swelling in the presence of amine-terminated polyethers as drilling fluid additives were studied.The results show that amine-terminated polyethers can intercalate into interlayer spaces of clays via the cationic exchanging reaction and display a dense hydrophobic monolayer arrangement,thereby expelling interlayer water molecules.Addition of amine-terminated polyethers can effectively inhibit the hydration-induced dispersion and swelling of clays and maintain a lower rheological profile in drilling fluids,along with the increase of clay particle size.The properties of D230 are better than those of T403.

关 键 词：水基钻井液 聚醚胺 作用机理 应用 

分 类 号：O69[理学—化学]