第33卷第6期 2016年11月
钻井液与完井液
DRILLING FLUID & COMPLETION FLUID
doi: 10.3696/j.issn.1001-5620.2016.06.005
Vol.33 No.6 Nov.2016
新型聚酰胺-胺树枝状聚合物页岩抑制特性研究
汤志川，邱正松，钟汉毅，张馨，
张道明
（中国石油大学（华东）石油工程学院，山东青岛266580）
荡志用等，新型案酰胺-要时状累合费质鲁押制特性所究[]结井减与完井减，2016，33（6：28-32.
摘要村核状象合物由于其独特的分子结构和特性，近年来日益受列关注。累脱胺-胺（PAMAM）作为研究最为或熟的树技状聚合曲，目前已在各领项得列应用，并在油阳化学方向发挥潜力。采用将制整测土资票实验、项者滚动分傲实验和程度分布测试降合评价不同代款需联胺-胺收状聚合物的神制性，带助表面张力、Ze电位测试和X-别热街射等表征测试了不同民载系践胺·肢的特性。结累表病，不用代数（G0～GS）聚酸胺-股测模状系合物均其有优良的抑制性，其中 GO和G5持制性优于传晚的KCI和国外聚胺Vltrahib，不同代氨树校状聚合物在粘土层同的吸附状态与其次有关，求度下为率层受用，高次度下为及层慢。录象联-股测获状系合物表面股基密度高，水溶液中部分质子化后，通过静电作用、氢键作用等强受附在混更常表面，降低款土求化斥力，排将出基间水分子，绅制真要水化分截。
关键词聚就服-服；树核状聚合物；百卷押制剂；作用机理：水化
中图分类号：TE254
文献标识码：A
文章编号：1001-5620（2016)06-0028-05
Shale Inhibition Characteristics of a New Polyamide-Amine Dendrimer TANG Zhichuan, QIU Zhengsong, ZHONG Hanyi, ZHANG Xin, ZHANG Daoming
(College of Petroleum Engineering,China University of Petroleum,Qingdao,Shandong 266580)
Abstraet Dendrimers, because of their uniquc 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 (GO-G5) all have superior shale inhibitive capacity, better than that of KCI 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.
Key words Polyamine-amine; Dendrimer; Shale inhibitor; Working mechanism; Hydration
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引言
随着油气勘探开发领域的拓展，泥页岩地层井
壁不稳定问题日益突出，泥页岩水化膨胀导致的井壁培塌掉块等情况，对钻井产生的直接经济损失巨
大。传统的油基钻井液由于其优异的页岩稳定性，成为钻遇页岩地层时的首选，但其高成本和环境保护问题限制了其推广应用。因此，众多学者试图寻求一种高抑制性的水基钻并液，以替代部分油基钻并液-。由于页岩水化机理研究的不断深人3-5]，
基金项目：国家自然基全面上项目（51474236）、中央高校基本科研业务费专项资全（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。
第一作者简介：汤志川，1993年生，在读硕士研究生，主要从事钻并液研究工作。B-mail；teamo_tzc@163.com。
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