新型聚酰胺-胺树枝状聚合物页岩抑制特性研究

发布时间：2018-01-20 16:41

本文关键词： 聚酰胺-胺树枝状聚合物页岩抑制剂作用机理水化　出处：《钻井液与完井液》2016年06期 　论文类型：期刊论文

【摘要】：树枝状聚合物由于其独特的分子结构和特性,近年来日益受到关注。聚酰胺-胺(PAMAM)作为研究最为成熟的树枝状聚合物,目前已在各领域得到应用,并在油田化学方向发挥潜力。采用抑制膨润土造浆实验、页岩滚动分散实验和粒度分布测试综合评价不同代数聚酰胺-胺树枝状聚合物的抑制性,借助表面张力、Zeta电位测试和X-射线衍射等表征测试了不同代数聚酰胺-胺的特性。结果表明,不同代数(G0~G5)聚酰胺-胺树枝状聚合物均具有优良的抑制性,其中G0和G5抑制性优于传统的KCl和国外聚胺Ultrahib。不同代数树枝状聚合物在黏土层间的吸附状态与其浓度有关,低浓度下为单层吸附,高浓度下为双层吸附。聚酰胺-胺树枝状聚合物表面胺基密度高,水溶液中部分质子化后,通过静电作用、氢键作用等强吸附在泥页岩表面,降低黏土水化斥力,排挤出层间水分子,抑制泥页岩水化分散。
[Abstract]:Dendritic polymers have attracted more and more attention in recent years because of their unique molecular structure and properties. As the most mature dendritic polymers, polyamide-amine (PAMAM) has been applied in various fields. The inhibition properties of different algebraic polyamide-amine dendritic polymers were evaluated by the experiments of inhibiting bentonite slurry making shale rolling dispersion and particle size distribution. The properties of different algebraic polyamide-amines were measured by surface tension Zeta potential measurement and X-ray diffraction. The dendritic polymers of polyamide-amine have excellent inhibition ability. The inhibition of G _ 0 and G _ 5 is better than that of traditional KCl and foreign polyamine ultrahib. the adsorption state of different algebraic dendrimer in clay layer is related to its concentration, and it is monolayer adsorption at low concentration. High concentration of polyamide-amine dendrimer surface amines high density, after partial protonation in aqueous solution, through electrostatic action, hydrogen bonding and other strong adsorption on the shale surface. The hydration repulsion of clay is reduced, the interlayer water molecules are squeezed out, and the hydration dispersion of shale is restrained.
【作者单位】：中国石油大学(华东)石油工程学院;
【基金】：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
【分类号】：TE254
【正文快照】： 汤志川等.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):28-32.0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垮塌掉块等情况,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

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