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磺化腐植酸/胍胶压裂液的制备及其性能研究

安娜 罗攀登 李永寿 方裕燕 王晨

安娜,罗攀登,李永寿,等. 磺化腐植酸/胍胶压裂液的制备及其性能研究[J]. 钻井液与完井液,2021,38(5):657-662 doi: 10.12358/j.issn.1001-5620.2021.05.018
引用本文: 安娜,罗攀登,李永寿,等. 磺化腐植酸/胍胶压裂液的制备及其性能研究[J]. 钻井液与完井液,2021,38(5):657-662 doi: 10.12358/j.issn.1001-5620.2021.05.018
AN Na, LUO Pandeng, LI Yongshou, et al.Preparation of and study on sulfonated humic acid/guar gum fracturing fluid[J]. Drilling Fluid & Completion Fluid,2021, 38(5):657-662 doi: 10.12358/j.issn.1001-5620.2021.05.018
Citation: AN Na, LUO Pandeng, LI Yongshou, et al.Preparation of and study on sulfonated humic acid/guar gum fracturing fluid[J]. Drilling Fluid & Completion Fluid,2021, 38(5):657-662 doi: 10.12358/j.issn.1001-5620.2021.05.018

磺化腐植酸/胍胶压裂液的制备及其性能研究

doi: 10.12358/j.issn.1001-5620.2021.05.018
基金项目: 中国石化股份公司科技攻关项目“顺北超深断溶体油藏高效酸压技术研究”(P20064-3)
详细信息
    作者简介:

    安娜,助理研究员,硕士,1985年生,主要从事油田化学品的研究与开发。电话(0991)3161148;E-mail:ann.xbsj@sinopec.com

    通讯作者:

    王晨,副教授,博士,研究方向为油田化学品。E-mail:sustwangchen@163.com

  • 中图分类号: TE357.12

Preparation of and Study on Sulfonated Humic Acid/Guar Gum Fracturing Fluid

  • 摘要: 采用亚硫酸钠对腐植酸进行磺化改性,磺化腐植酸(SHA)与羧甲基胍胶(CMGG)混合后,加入有机锆交联形成新型耐温耐盐型压裂液凝胶(SHA/CMGG),并研究了压裂液的应用性能。结果表明,SHA/CMGG凝胶比CMGG凝胶具有更好的黏弹性和悬砂能力,其中添加量0.3%SHA/CMGG压裂液性能最好,平均沉降速度为0.32 mm/min。由于磺酸根的引入,SHA/CMGG表现了优异的耐盐性,1%外加盐浓度下表观黏度下降率为50%。同时0.3%SHA/CMGG压裂液表现出良好的耐温耐剪切性能,在140 ℃和170 s−1剪切下,黏度为120 mPa·s,可保持60 min基本不变。破胶后,SHA/CMGG破胶液的黏度和岩心伤害性均变大,但增加量并不显著。通过SEM观察了压裂液作用过程的微观结构变化,SHA/CMGG凝胶具有致密的网状结构,对支撑剂的悬浮起着重要作用。

     

  • 图  1  磺化腐植酸的红外谱图

    图  2  SHA/CMGG压裂液基液的表观黏度

    图  3  SHA/CMGG凝胶的储能模量和损耗模量

    图  4  0.3%SHA/CMGG压裂液的耐温耐剪切曲线

    图  5  不同外加盐浓度下0.3%SHA/CMGG压裂液的表观黏度

    图  6  0.3%SHA/CMGG压裂液的SEM变化

    表  1  压裂液悬砂性能测试结果

    压裂液沉降速度/mm·min−1
    CMGG1.12
    0.1%SHA/CMGG0.96
    0.2%SHA/CMGG0.57
    0.3%SHA/CMGG0.32
    0.4%SHA/CMGG0.53
    0.5%SHA/CMGG0.79
    下载: 导出CSV

    表  2  破胶液黏度和岩心伤害实验结果

    样品η /
    mPa·s
    K0/
    mD
    Kd/
    mD
    Kd/K0 /
    %
    CMGG4.253.1922.80212.23
    0.1%SHA/CMGG4.313.1922.76713.31
    0.2%SHA/CMGG4.593.1922.74913.89
    0.3%SHA/CMGG4.783.1922.73114.43
    0.4%SHA/CMGG5.223.1922.72714.56
    0.5%SHA/CMGG6.073.1922.71914.83
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-08
  • 录用日期:  2021-08-17
  • 刊出日期:  2021-10-01

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