Page 210 - 《精细化工》2020年第11期

第 37 卷第 11 期 精 细 化 工 Vol.37, No.11
2020 年 11 月 FINE CHEMICALS Nov. 2020

油田化学品与油品添加剂
改性羟丙基瓜尔胶/表面活性剂复合压裂液

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黄飞飞 ，张 孝 ，何小龙 ，刘 波 ，蒲春生 ，林树军
〔1. 中国石油大学（华东） 石油工程学院，山东 青岛 266580；2. 重庆前卫科技集团有限公司，重庆 401121；
3. 中国石油长庆油田分公司第一采油厂，陕西 延安 716000〕
摘要：以溴代十四烷对羟丙基瓜尔胶进行了疏水改性，对改性产物进行了红外和热重分析。用质量分数 0.15%
疏水改性羟丙基瓜尔胶和质量分数 0.8%阳离子双子表面活性剂 1,3-N-双(3-十二烷基丙酰胺)-1,1,3,3-N-四甲
基异丙醇-1,3-二溴化铵制备了复合压裂液，并对复合压裂液的耐温耐剪切性、流变性、动态携砂性、破胶
液界面性质、储层伤害性进行了系统评价。结果表明，羟丙基瓜尔胶成功接入了疏水碳链，且热稳定性良
好；所制备的复合压裂液在 90 ℃下黏度高于 109 mPa·s；该体系表现为典型的黏弹性流体，动态携砂性良
好；破胶液油/水界面张力为 0.9 mN/m，且可显著增强储层岩石亲水性；储层基质油相渗透率损害率和裂缝
导流能力损害率分别仅为 9.1%和 5.3%。
关键词：疏水改性羟丙基瓜尔胶；双子表面活性剂；复合压裂液；耐温耐剪切；携砂性；储层伤害；油田化
学品
中图分类号：TE39；TE34 文献标识码：A 文章编号：1003-5214 (2020) 11-2356-07

Modified hydroxypropyl guar/surfactant based fracturing fluid

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HUANG Feifei , ZHANG Xiao , HE Xiaolong , LIU Bo , PU Chunsheng , LIN Shujun
[1. School of Petroleum Engineering China University of Petroleum (East China), Qingdao 266580, Shandong, China; 2.
Chongqing Qianwei Technologies Group Co., Ltd, Chongqing 401121, China; 3. First Plant of Changqing Oilfield,
Yan'an 716000, Shaanxi, China]
Abstract: Hydroxypropyl guar was hydrophobically modified by 1-bromotetradecane. The modified product
was characterized by FTIR and thermogravimetric analysis. Then, a composite fracturing fluid composed of
mass fraction of 0.15% modified hydroxypropyl guar and mass fraction of 0.8% Gemini surfactant
1,3-N-bis (3-dodecylpropanamide)-1,1,3,3-N-tetramethylisopropanol-1,3-ammonium dibromide was prepared.
The heat and shear resistance, rheological property, dynamic proppant transport capacity, interfacial
property, and formation damage of the composite fracturing fluid were investigated. The results showed that
the hydrophobic carbon chains were connected to hydroxypropyl guar successfully. The composite
fracturing fluid exhibited good thermal stability with a viscosity of over 109 mPa·s at 90 ℃ and typical
viscoelasticity and favorable dynamic proppant transport. The oil/water interfacial tension of the broken
fracturing fluid was 0.9 mN/m, and the hydrophilicity of reservoir rocks aged in the broken fracturing fluid
was significantly enhanced. The loss rates of matrix permeability for the oil phase and crack conductivity
were only 9.1% and 5.3% respectively.
Key words: hydrophobically modified hydroxypropyl guar; Gemini surfactant; composite fracturing fluid;
heat and shear resistance; proppant carrying capability; formation damage; oil field chemicals

随着常规油气资源的日益减少，低渗透等非常 油藏有效开发的关键技术 [5-6] 。交联瓜尔胶（GG）
[7]
规油藏开发力度逐年加大 [1-4] ，水力压裂改造是该类 压裂液体系在当前压裂作业中应用最为广泛 ，但

收稿日期：2020-05-13; 定用日期：2020-07-15; DOI: 10.13550/j.jxhg.20200396
基金项目：国家自然科学基金（51874339、51904320）；中央高校基本科研业务费专项资金（17CX05004、18CX02095A）
作者简介：黄飞飞（1987—），男，博士生，E-mail：feifeihuang_upc@hotmail.com。联系人：蒲春生（1959—），男，教授，E-mail：chshpu_tx@
126.com。