钻井液与完井液2016，Vol.33Issue(6)：28-32,5.DOI:10.3696/j.issn.1001-5620.2016.06.005
新型聚酰胺-胺树枝状聚合物页岩抑制特性研究
Shale Inhibition Characteristics of a New Polyamide-Amine Dendrimer
摘要
Abstract
Dendrimers,because of their unique molecular structures and characteristics,have been receiving more and more attention in recent years.Polyamide-amine (PAMAM),the most understood dendrimer,has been widely used in many fields,including oilfield chemistry.In a recent study,the inhibitive capacity of PAMAM with different generations was evaluated through bentonite yield test,hot rolling test and particle size distribution test etc.Using surface tension tester,Zeta potentiometer and X-ray diffraction tester,PAMAMs of different generations were characterized.It has been shown that PAMAM s of different generations (G0-G5) all have superior shale inhibitive capacity,better than that of KCl and Ultrahib (a polyamine product used as a shale inhibitor).The adsorption of PAMAMs in between the layers of clay is related to their concentrations.At low concentrations,the adsorption is monolayer adsorption;at higher concentrations,the adsorption becomes double-layer adsorption.PAMAM has high intensity of amine base at its surface,and after partial protonation in water,it is adsorbed on to the surface of clay particles through electrostatic force and hydrogen bond,reducing the hydration repulsion of clay particles and squeezing interlayer water molecules out of clay,thereby inhibiting the hydration and dispersion of shales.关键词
聚酰胺-胺/树枝状聚合物/页岩抑制剂/作用机理/水化Key words
Polyamine-amine/Dendrimer/Shale inhibitor/Working mechanism/Hydration分类
能源科技引用本文复制引用
汤志川,邱正松,钟汉毅,张馨,张道明..新型聚酰胺-胺树枝状聚合物页岩抑制特性研究[J].钻井液与完井液,2016,33(6):28-32,5.基金项目
国家自然基金面上项目(51474236)、中央高校基本科研业务费专项资金(16CX02023A)、青岛市应用基础研究计划项目青年专项(15-9-1-43-jch)资助. （51474236）
