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Preparation of a novel fracturing fluid with good heat and shear resistance

机译：制备具有良好热和剪切抗性的新型压裂液

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摘要

A new terpolymer (MAS-1) was created by copolymerizing acrylamide (AM), acrylic acid (AA), and 4-isopropenylcarbamoyl-benzene sulfonic acid (AMBS). Thermogravimetric analysis (TGA) suggested that MAS-1 has better heat resistance and meets the requirements for a fracturing fluid at 200 degrees C. X-ray diffraction (XRD), and conductivity tests showed that MAS-1 has good water solubility. The viscosity of the fracturing fluids containing MAS-1 was found to be about 135 mPa s after 120 min at 170 s(-1) and 150 degrees C. SEM images and the determination of viscoelasticity showed that MAS-1 has a dense and robust spatial network structure in the fracturing fluid. The sedimentation velocity of the proppant was 0.0528 cm min(-1) at 90 degrees C. When enough ammonium persulfate was added to yield approximately 0.10 wt%, the viscosity of the broken fluid was 4.5 mPa s, and the gel broken fluid was transparent without visible residue. In addition, the fracturing fluid did little damage to the reservoir. The drag reduction rate of MAS-1 was always higher than KYPAM-6A and HPAM with the shear rate ranging from 1000 s(-1) to 7000 s(-1). Therefore, this fracturing fluid could be an alternative for low permeability reservoir stimulation.
机译：通过共聚丙烯酰胺（AM），丙烯酸（AA）和4-异丙苯基氨基酰苯磺酸（AMB）来产生新的三元共聚物（MAS-1）。热重分析（TGA）表明MAS-1具有更好的耐热性，并满足200摄氏度的压裂液的要求。X射线衍射（XRD）和电导率试验表明MAS-1具有良好的水溶性。在170s（-1）和150摄氏度下120分钟后，发现含有MAS-1的压裂液的粘度为约135MPas .SEM图像和粘弹性的测定显示MAS-1具有密集且稳健压裂液中的空间网络结构。支撑剂的沉降速度在90℃下为0.0528cm min（-1）。当加入足够的过硫酸铵以产生约0.10wt％时，破碎流体的粘度为4.5MPa S，凝胶破碎的流体是透明的没有可见的残留物。此外，压裂液对储层造成损坏。 MAS-1的阻力降低率总是高于Kypam-6a和HPAM，剪切速率范围为1000 s（-1）至7000 s（-1）。因此，这种压裂流体可以是低渗透储层刺激的替代方案。

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  • 来源
    《RSC Advances》 |2019年第3期|共9页
  • 作者

    Zhang Yang; Mao Jincheng; Xu Tao; Zhang Zhaoyang; Yang Bo; Mao Jinhua; Yang Xiaojiang;

  • 作者单位

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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