钻井液用纳米封堵剂研究进展

发布时间：2018-11-03 06:50

【摘要】：分析了硬脆性泥页岩井壁失稳的原因,介绍了纳米材料特点及其应用,并概述了国内外钻井液用纳米封堵剂的研究进展,包括有机纳米封堵剂、无机纳米封堵剂、有机/无机纳米封堵剂,以及纳米封堵剂现场应用案例。笔者认为:利用无机纳米材料刚性特征以及有机聚合物可任意变形、支化成膜等特性,形成的一种核壳结构的无机/聚合物类纳米封堵剂,能够很好地分散到钻井液中,且对钻井液黏度和切力影响较小,这种类型的纳米封堵剂能够在低浓度下封堵泥页岩孔喉,建立一种疏水型且具有一定强度的泥页岩人工井壁,这不仅能够阻止钻井液侵入,而且还能提高地层承压能力,无机纳米材料与有机聚合物的结合是未来钻井液防塌剂的发展方向。
[Abstract]:This paper analyzes the reasons for the instability of hard and brittle shale shaft lining, introduces the characteristics of nanometer materials and their applications, and summarizes the research progress of nano plugging agents used in drilling fluids at home and abroad, including organic nano plugging agents and inorganic nano plugging agents. Organic / inorganic nano-plugging agent and field application case of nano-plugging agent. The author believes that a kind of inorganic / polymer nano-plugging agent with core-shell structure can be well dispersed into drilling fluid by using the rigid characteristics of inorganic nano-materials and the characteristics of organic polymers that can be deformed arbitrarily and branched into films. And it has little effect on the viscosity and shear force of drilling fluid. This kind of nano-plugging agent can block shale pore throat at low concentration and establish a kind of hydrophobic shale artificial wellbore with certain strength, which can not only prevent drilling fluid from invading. The combination of inorganic nanomaterials and organic polymers is the development direction of drilling fluid sloughing agents in the future.
【作者单位】：北京石大胡扬石油科技发展有限公司;中国石化江苏油田分公司石油工程技术研究院;渤海钻探定向井技术服务分公司;
【分类号】：TE254.4

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