水包水型疏水缔合聚丙烯酰胺增稠剂的合成及在压裂中的应用

doi:10.16085/j.issn.1000-6613.2017-0640

化工进展 ›› 2017, Vol. 36 ›› Issue (08): 3058-3065.DOI: 10.16085/j.issn.1000-6613.2017-0640

水包水型疏水缔合聚丙烯酰胺增稠剂的合成及在压裂中的应用

张锋三^1,2, 沈一丁¹, 吴金桥², 原敏², 孙晓²

1. 教育部轻化工助剂化学与技术重点实验室, 陕西科技大学, 陕西西安 710021;
2. 陕西延长石油(集团)有限责任公司研究院, 陕西西安 710075

收稿日期:2017-04-12 修回日期:2017-05-09 出版日期:2017-08-05 发布日期:2017-08-05
通讯作者: 张锋三(1987-),男,工程师,从事压裂液的研究与现场工作。
作者简介:张锋三(1987-),男,工程师,从事压裂液的研究与现场工作。E-mail:zhangfengsan911@126.com。
基金资助:
国家科技重大专项项目（2017ZX05039004、ycsy2017QNJJ-B-08）。

Synthesis of water-in-water hydrophobically associating polyacrylamide and its application in fracturing

ZHANG Fengsan^1,2, SHEN Yiding¹, WU Jinqiao², YUAN Min², SUN Xiao²

1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China;
2. Research Insititute of Yanchang Petroleum(Group) Co., Ltd., Xi'an 710075, Shaanxi, China

Received:2017-04-12 Revised:2017-05-09 Online:2017-08-05 Published:2017-08-05

摘要/Abstract

摘要： 以丙烯酰胺、2-丙烯酰胺-2-甲基丙磺酸和芥酸酰胺羟丙基磺基甜菜碱为原料，采用水分散聚合方式合成出水包水型疏水缔合聚丙烯酰胺增稠剂，通过FTIR和TG对增稠剂的结构及热解质量进行了测试。分析了OWPAM乳液增稠剂的基本性能及水溶液的微观和宏观性能，结果表明，在单体芥酸CAB用量为4.0%时，乳液的产率、平均粒径、表观黏度和稳定性达到最优，黏均分子量为2.43×10⁶g/mol；OWPAM乳液的临界胶束缔合浓度（CAC）值为0.32%，当浓度大于CAC值后水溶液体系内的缔合形式以分子间缔合为主，OWPAM乳液在0.1%、流速10m/s时减阻率为72%。助黏剂TR-1质量分数为1.0%时可将0.5%水溶液黏度增加至160mPa·s，复配成的压裂液具有较好耐温耐剪切性、黏弹性和悬砂性，在APS质量分数为0.05%时，测试时间为2h压裂液可以完全破胶，能够达到压裂液的使用标准。

关键词: 分散聚合, 聚丙烯酰胺, 疏水缔合, 体积压裂, 压裂液

Abstract: a water-in-water hydrophobically associating polyacrylamide was synthesized using acrylamide,2-acrylamido-2-methyl propane sulfonic acid and erucylamide propyl hydroxy sulfobetaine as raw materials by dispersion polymerization in salt solution. The obtained polymer was characterized by means of FTIR and TG. The basic properties,micro-properties,and macroscopic properties of the OWPAM emulsion were also investigated. The results showed that the obtained emulsion had high yields,better averaged particle size,and better stability with erucic acid CAB of 4.0% viscosity average molecular weight of 2.43×10⁶g/mol,and OWPAM emusion critical associating concentration(CAC)0.32%. At room temperature,flow velocity of 10.0m/s and concentration of 0.10%,the OWPAM solution drag agent was 72%,The viscosity of 0.5% OWPAM solution could be increased up to 160mPa·s with TR-1 concentration of 1.0%. The fracturing fluid had good heat resistance,shear resistance,viscoelastic,and suspended sand. The new fracturing fluid could completely break in 2h when APS concentration was 0.05%.

Key words: dispersion polymerization, polyacrylamide, hydrophobic association, volume fracturing, fracturing fluid

中图分类号:

TQ423.4

张锋三, 沈一丁, 吴金桥, 原敏, 孙晓. 水包水型疏水缔合聚丙烯酰胺增稠剂的合成及在压裂中的应用[J]. 化工进展, 2017, 36(08): 3058-3065.

ZHANG Fengsan, SHEN Yiding, WU Jinqiao, YUAN Min, SUN Xiao. Synthesis of water-in-water hydrophobically associating polyacrylamide and its application in fracturing[J]. Chemical Industry and Engineering Progress, 2017, 36(08): 3058-3065.

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水包水型疏水缔合聚丙烯酰胺增稠剂的合成及在压裂中的应用

Synthesis of water-in-water hydrophobically associating polyacrylamide and its application in fracturing

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