油井水泥专用丁苯胶乳的实验评价

摘要

针对传统丁苯胶乳在油井水泥浆中适用性能差的问题，采用种子乳液聚合方法合成了一种油井水泥专用丁苯胶乳，并对其进行了微观结构和应用性能评价。该丁苯胶乳物理性能、红外及热失重分析结果表明：该丁苯胶乳乳液稳定性好，高温下分子结构稳定。丁苯胶乳水泥浆的应用性能结果和微观结构分析表明：该丁苯胶乳水泥浆API失水可控制在50 mL内，耐盐性能好，可解决传统胶乳水泥浆稠化实验"鼓包"、"包心"等问题；加有该丁苯胶乳的水泥浆早期强度发展快，胶凝强度过渡时间短；丁苯胶乳能细化水泥浆的孔径结构，提高水泥浆的胶结强度和形变能力，并且其水泥石的柔韧性比原浆水泥石提高了30%；此外，能够满足深井、超深井和气井等复杂井的固井作业要求。

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	肖明明
	郭锦棠
	靳建洲
	于永金
	樊金杰

关键词：油井水泥丁苯胶乳乳液稳定性耐盐性防气窜柔韧性

Abstract：

With regard to poor applicability of traditional styrene-butadiene latex in oil well cement, styrene-butadiene latex specialized for oil well cement was developed by seeded emulsion polymerization, while its micro-structure and properties were evaluated. Physical properties with styrene-butadiene latex, IR and TG analysis show that:styrene-butadiene latex has good emulsion stability and stable molecular structure. The application performance and microstructure of slurries show that:API filtration of slurries with styrene-butadiene latex can be controlled under 50 mL. Slurries with styrene-butadiene latex has excellent salt-resistance and can also deal with the package of thickening curve in traditional styrene-butadiene latex; slurries mainly prepared by styrene-butadiene latex present rapid development of early strength, short transit time during thickening process. What is more, styrene-butadiene latex can refine the pore structure to improve the cementing strength of the cement slurry and the deformation ability, And the flexibility is relatively higher by 30% in comparison with ordinary oil well cement. It can satisfy cementing requirements in deep well, ultra-deep well and gas well.

Keywords： oil well cement； styrene butadiene latex； emulsion stability； salt tolerance； gas channeling prevention； flexibility

Received 2016-03-23;

Fund:

国家科技重大专项（2011ZX05021-004），天津市自然科学基金项目（15JCYBJC21100）。

Corresponding Authors: 郭锦棠,E-mail:jtguo@tju.edu.cn。 Email: jtguo@tju.edu.cn

About author: 肖明明(1989-),女,硕士,现从事油田化学品方面的研究。

引用本文:

肖明明, 郭锦棠, 靳建洲, 于永金, 樊金杰.油井水泥专用丁苯胶乳的实验评价[J]. 化学工业与工程, 2017,34(6): 18-23

Xiao Mingming, Guo Jintang, Jin Jianzhou, Yu Yongjin, Fan Jinjie.Laboratory Evaluation on Styrene Butadiene Latex Specialized for Oil Well Cement[J]. Chemcial Industry and Engineering, 2017,34(6): 18-23

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