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压裂返排液中瓜胶浓度检测及分子结构解析

斯绍雄 张珍珠 王雨 郭进周 吴永花 宫兆波

斯绍雄, 张珍珠, 王雨, 郭进周, 吴永花, 宫兆波. 压裂返排液中瓜胶浓度检测及分子结构解析[J]. 钻井液与完井液, 2018, 35(5): 115-120. doi: 10.3969/j.issn.1001-5620.2018.05.022
引用本文: 斯绍雄, 张珍珠, 王雨, 郭进周, 吴永花, 宫兆波. 压裂返排液中瓜胶浓度检测及分子结构解析[J]. 钻井液与完井液, 2018, 35(5): 115-120. doi: 10.3969/j.issn.1001-5620.2018.05.022
SI Shaoxiong, ZHANG Zhenzhu, WANG Yu, GUO Jinzhou, WU Yonghua, GONG Zhaobo. Concentration Detection and Molecular Structure Identifcation of Guar Gum in Fracturing Flowback Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 115-120. doi: 10.3969/j.issn.1001-5620.2018.05.022
Citation: SI Shaoxiong, ZHANG Zhenzhu, WANG Yu, GUO Jinzhou, WU Yonghua, GONG Zhaobo. Concentration Detection and Molecular Structure Identifcation of Guar Gum in Fracturing Flowback Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 115-120. doi: 10.3969/j.issn.1001-5620.2018.05.022

压裂返排液中瓜胶浓度检测及分子结构解析

doi: 10.3969/j.issn.1001-5620.2018.05.022
详细信息
    作者简介:

    斯绍雄,工程师,1988年生,毕业于四川大学应用化学专业,现在从事压裂返排液研究工作。电话(0990)6868311;E-mail:sishaoxiong@126.com。

  • 中图分类号: TE357.12

Concentration Detection and Molecular Structure Identifcation of Guar Gum in Fracturing Flowback Fluids

  • 摘要: 压裂返排液中的主要成分是瓜胶,其有效含量的确定以及分子结构的变化对于返排液后续的处理具有指导作用。利用瓜胶的化学性质建立了采用蒽酮比色法检测返排液中瓜胶浓度的方法,建立的标准曲线线性相关性为0.999 2,回收率在96.5%~101.1%之间,方法重现性高,准确可靠。同时利用凝胶色谱(GPC)与飞行时间质谱联用的技术(LC/Q-TOF-MS)解析了压裂返排液中瓜胶的分子量和分子结构的变化过程。结果表明,凝胶色谱测量瓜胶分子量的标准曲线线性相关性为0.995 5,玛湖地区使用的瓜胶的相对分子质量约为84万,随返排时间的增加返排液中大分子瓜胶显著减少,加入氧化破胶剂后瓜胶的B-O键优先断裂,瓜胶生成聚二醇络合物。

     

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出版历程
  • 收稿日期:  2018-07-25
  • 刊出日期:  2018-09-30

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