改性聚合物压裂液的合成及其性能

doi:10.11944/j.issn.1000-0518.2018.11.170410

摘要/Abstract

摘要：

为了提高油田压裂改造中常用水基压裂液的耐温和耐盐性能,本文以丙烯酸(AA)、丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)和季铵盐型长尾疏水单体(DS)为原料,制备了疏水改性聚合物增稠剂(AAAD)。有机硼酸盐与葡萄糖酸钠形成配合物(GS-2)为交联剂,再加入其它添加剂,AAAD通过交联反应,制备出改性聚合物压裂液。评价了该体系的流变性、黏弹性、耐温性、抗盐性和破胶性等性能。结果表明,压裂液在温度150 ℃、剪切速率170 s^-1条件下具有良好的流变性能;在90 ℃,破胶剂过硫酸铵质量分数为0.01%条件下,4 h即可破胶,破胶液黏度为1.6 mPa·s。

关键词: 疏水改性聚合物, 压裂液, 抗温性能, 流变性能

Abstract:

In order to improve the temperate and salt tolerance performance of water base fracturing fluid used in fracturing and reconstruction of oil field, acrylic acid(AA), acrylamide(AM), 2-acrylamide-2-methyl propane sulfonic acid(AMPS) and cationic hydrophobic long chain monomer(DS) were used as raw materials to prepare a modified hydrophobic polymer thickener(AAAD). A new fracturing fluid system was prepared using AAAD as the thickening agent, the complex of organic borates and sodium gluconate(GS-2) as the crosslinking agent. The system rheology and viscoelasticity, temperature resistance, salt resistance and gel breaking performance were evaluated. The results show that the fracturing fluid has good rheological properties at 150 ℃ with the shear rate of 170 s^-1. The gel can be broken within 4 h at 90 ℃ and the viscosity of the gel breaking liquid is 1.6 mPa·s when mass fraction of ammonium persulfate is 0.01%.

Key words: hydrophobic modified polymers, fracturing fluid, temperature resistance, rheological characteristic

鲁大丽,陈勇,张俊,杨雪. 改性聚合物压裂液的合成及其性能[J]. 应用化学, 2018, 35(11): 1295-1300.

LU Dali,CHEN Yong,ZHANG Jun,YANG Xue. Synthesis and Properties of Modified Polymer Fracturing Fluid[J]. Chinese Journal of Applied Chemistry, 2018, 35(11): 1295-1300.

参考文献

[1]	DU Tao,YAO Yiming,JIANG Tingxue,et al. Study of the Rheological Property and Proppant-carrying Capacity for Reversible Cross-linking Polymer Fracturing Fluid[J]. Appl Chem Ind,2015,44(10):1788-1790(in Chinese). 杜涛,姚奕明,蒋廷学,等. 可逆交联聚合物压裂液流变及悬砂性能研究[J]. 应用化工,2015,44(10):1788-1790.
[2]	HOU Fan,ZHANG Ye,FANG Yuyan,et al. Study on Low Molecular Weight Polymer Fracturing Fluid and Its Application in Tahe Oilfield[J]. Drill Fluid Compl Fluid,2014,31(1):76-79(in Chinese). 侯帆,张烨,裕燕,等. 低分子量聚合物压裂液的研究及其在塔河油田的应用[J]. 钻井液与完井液,2014,31(1):76-79.
[3]	LIU Qingpu.The Application of Polyacrylamide and Derivatives[J]. Pet Technol,1991,20(5):345-352(in Chinese). 刘庆普. 聚丙烯酰胺及其衍生物的应用[J]. 石油化工,1991,20(5):345-352.
[4]	Yan Z,Deng Y.Cationic Microparticle Based Flocculation and Retention Systems[J]. Chem Eng J,2000,80(1):31-36.
[5]	Ovenden C,Xiao H.Flocculation Behaviour and Mechanisms of Cationic Inorganic Microparticle/Polymer Systems[J]. Colloids Surf A,2002,197(1/2):225-234.
[6]	DAI Yongsheng,LIU Jinhe,YE Tianxu,et al. Development Trends of Hydrophobically Associating Water-soluble Polymer[J]. Fine Spcialty Chem,2003,11(19):18-21(in Chinese). 戴永胜,刘金河,叶天旭,等. 疏水缔合水溶性耐温耐盐聚合物的研究进展[J]. 精细与专用化学品,2003,11(19):18-21.
[7]	Evani S,Rose G D.Water Soluble Hydrophobe Association of Polymers[J]. Polym Mater Sci Eng,1987,57:477-481.
[8]	LUO Kaifu,ZHANG Xi,HUANG Ronghua.Synthesis of Hydrophobically Associating Water-soluble Polymers[J]. Oilfield Chem,1999,16(3):282-285(in Chinese). 罗开富,张熙,黄荣华. 疏水缔合水溶性聚合物的合成[J]. 油田化学,1999,16(3):282-285.
[9]	HAN Lijuan,LUO Pingya,YE Zhongbin,et al. Study of the Microstructure of Hydrophobically Associating Polyacrylamide[J]. Nat Gas Ind,2004,24(12):119-121(in Chinese). 韩利娟,罗平亚,叶仲斌,等. 疏水缔合聚丙烯酰胺的微观结构研究[J]. 天然气工业,2004,24(12):119-121.
[10]	DU Tao,YAO Yiming,JIANG Tingxue,et al. Study on Properties of New Hydrophobic Associating Polymer Fracturing Fluid[J]. Spciality Petrochem,2014,31(3):72-76(in Chinese). 杜涛,姚奕明,蒋廷学,等. 新型疏水缔合聚合物压裂液综合性能评价[J]. 精细石油化工,2014,31(3):72-76.
[11]	WU Wei,LIU Pingping,WU Jihui,et al. Preparation of Hydrophobically as Sociating Polymer AAMS-2 by Inverse Emulsion Polymerization and Its Performance as a Fracturing Fluid Thickener[J]. Appl Chem Ind,2016,45(2):203-206(in Chinese). 吴伟,刘平平,武继辉,等. 反相乳液聚合制备疏水缔合聚合物AAMS-2及其压裂液性能评价[J]. 应用化工,2016,45(2):203-206.
[12]	GUAN Baoshan,XUE Xiaojia,HE Zhiwu,et al. Study on Low Molecular Weight Synthetic Polymer Fracturing Fluid[J]. Oilfield Chem,2006,23(1):36-38(in Chinese). 管保山,薛小佳,何治武,等. 低分子量合成聚合物压裂液研究[J]. 油田化学,2006,23(1):36-38.
[13]	ZENG Ke,HAN Fuli,DONG Jianmin,et al. Synthesis and Application of Small Molecule Branched Chain Polymer Fracturing Fluid[J]. Drill Fluid Compl Fluid,2013,30(5):75-78(in Chinese). 曾科,韩福利,董健敏,等. 小分子支链化聚合物压裂液的合成与应用[J]. 钻井液与完井液,2013,30(5):75-78.
[14]	GAO Chengwu,YIN Shuli,ZHAO Guangyong,et al. Research and Application of Low Polymer Fracturing Fluid[J]. Xinjiang Pet Technol,2003,2(13):13-17(in Chinese). 高成武,尹淑丽,赵光勇,等. 低聚合物压裂液的研究及应用[J]. 新疆石油科技,2003,2(13):13-17.
[15]	HE Chunming,CHEN Hongjun,LIU Chao,et al. Study on High Temperature Synthetic Polymer Fracturing Fluid System[J]. Oilfield Chem,2012,29(1):65-68(in Chinese). 何春明,陈红军,刘超,等. 高温合成聚合物压裂液体系研究[J]. 油田化学,2012,29(1):65-68.
[16]	National Development and Reform Commission. SY/T6376-2008 General Technical Specifications of Fracturing Fluid[S]. Petroleum Industry Press,2008(in Chinese). 国家发展和改革委员会. SY/T6376-2008压裂液通用技术条件[S]. 北京,石油工业出版社,2008.