钻井液与完井液2018，Vol.35Issue(1)：114-118,5.DOI:10.3969/j.issn.1001-5620.2018.01.022
一种压裂液用疏水阳离子改性瓜胶的制备与评价
Preparation and Evaluation of a Hydrophobic Cationic Guar Gum for Fracturing Fluid
刘通义 1唐瑭 1陈光杰 2董国峰 1唐文越1
作者信息
- 1. 西南石油大学化学化工学院,成都610500
- 2. 成都佰椿石油科技有限公司,成都610500
- 折叠
摘要
Abstract
A modified guar gum (CTGG) has been prepared to minimize formation damage caused by conventional guar gum fracturing fluids.CTGG was obtained through solvent method using guar gum as the raw material,CT1 (a long chain hydrophobic cationic monomer produced with N,N-Dimethyl dodecyl amine and epichlorohydrin) as etherizing agent,methanol as solvent,and sodium hydroxide as catalyst.Characterization of CTGG with IR spectroscopy showed that hydrophobic cationic group has been introduced into the molecular structure of CTGG which dissolved in 60 min.Water insoluble matters and residue were both less than conventional guar gum,The viscosity of CTGG is greater than GG and HPG at different concentrations.Other evaluation experiments indicated that gels formed by CTGG in water had viscosity of 300 mPa · s at 120 ℃.A fracturing fluid containing 0.35％ CTGG (mass ratio) was resistant to shearing at 120 ℃,having viscosity of at least 67.4 mPa · s and residue of only 246.45 mg/L.These data demonstrate that CTGG has good solubility,thickening performance and temperature and shearing resistance,which are beneficial to protect reservoirs from being damaged.关键词
阳离子改性瓜胶/疏水基团/压裂液Key words
Cationically modified guar gum/Hydrophobic group/Fracturing fluid分类
能源科技引用本文复制引用
刘通义,唐瑭,陈光杰,董国峰,唐文越..一种压裂液用疏水阳离子改性瓜胶的制备与评价[J].钻井液与完井液,2018,35(1):114-118,5.
