无固化剂环氧树脂乳液对油井水泥早期水化的影响

发布时间：2018-08-11 10:06

【摘要】：将不同聚合度环氧树脂乳液以不同掺量掺加到固井水泥浆中,制备环氧树脂乳液改性水泥浆。在无固化剂、不同温度条件下,通过水化热测量,扫描电子显微镜,X射线衍射等方法研究了环氧树脂乳液对油井水泥早期水化特性的影响。结果表明:相对于纯油井水泥浆体,环氧树脂水泥浆的水化进程被延缓,但是水化产物没有明显变化,环氧树脂在硬化水泥浆体中主要以聚合物膜的形式存在,可填充水泥石内部的毛细孔隙,使环氧树脂水泥石的抗压强度随着环氧树脂掺量的提高而略有增加。
[Abstract]:Epoxy resin emulsion modified cement slurry was prepared by adding different amount of epoxy resin emulsion to cementing cement slurry with different degree of polymerization. The effect of epoxy resin emulsion on the early hydration characteristics of oil well cement was studied by means of hydration heat measurement and scanning electron microscope X-ray diffraction under different temperature without curing agent. The results showed that the hydration process of epoxy resin cement paste was delayed compared with pure oil well cement paste, but the hydration product did not change obviously, and epoxy resin mainly existed in the form of polymer film in hardened cement paste. The capillary pores in cement stone can be filled, and the compressive strength of epoxy resin cement stone increases slightly with the increase of epoxy resin content.
【作者单位】：清华大学土木工程系;中海油田服务股份有限公司;
【基金】：国家自然科学基金项目(No.51678344,No.51678343)
【分类号】：TE256.6

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