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Preparation and performance evaluation of a low-damage thickener suitable for fracturing medium and deep coalbed methane.

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Title: Preparation and performance evaluation of a low-damage thickener suitable for fracturing medium and deep coalbed methane.
Authors: Hu, Qiujia1 (AUTHOR), Chen, Biwu1 (AUTHOR), Zhang, Yongqi1 (AUTHOR), Wang, Qingchuan1 (AUTHOR), Yao, Wei1 (AUTHOR), Chen, Keyou2 (AUTHOR), Zhou, Quan2 (AUTHOR), Xie, ChaoQun2 (AUTHOR), Yan, Chaozong2 (AUTHOR) ycz199605@163.com
Source: Journal of Dispersion Science & Technology. 2026, Vol. 47 Issue 9, p1816-1826. 11p.
Subject Terms: *Coalbed methane, *Fracturing fluids, *Rock permeability, *Polymerization, *Drag reduction, *Viscosity, *Polymer structure
Abstract: The middle to deep coalbed methane reservoirs have the characteristics of higher burial depth, developed natural fractures and cleats, and are susceptible to damage from gel residue. To solve those problems, a CBM thickener was synthesized by using 2-acrylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA), methacryl propyl trimethyl ammonium chloride (DMC), and hydroxyethyl methacrylate (HEMA) monomers as raw materials through aqueous solution polymerization. The molecular structure and aqueous solution morphology were characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance hydrogen spectroscopy (1H NMR), and scanning electron microscopy (SEM), respectively. The drag reduction rate and viscosity of different thickener dosages were tested. When the thickener dosage were 0.1 wt%∼1.0 wt%, the drag reduction rate were 81.3%∼61.5%, and the viscosity was 6 mPa·s∼117 mPa·s, and further exploration was conducted by using a rheometer to investigate the temperature and shear resistance at 25–120 °C and the viscoelasticity at 25 °C and 120 °C of 0.6 wt% thickener aqueous solution, indicating its good performance as a fracturing fluid. Finally, the gas permeability changes of the gel breaker with a thickener dosages of 0.4 wt%∼1.0 wt% were investigated to calculate its matrix damage rate, which corresponds to 9.2%∼11.1%, and SEM have been used to characterize the morphological changes of the rock core before and after the gel breaker solution displacement, and verify its damage mechanism. Ultimately, it was proven that the synthesized CBM thickener can be suitable for fracturing operations in middle to deep coalbed methane, with high efficiency in drag reduction and low matrix damage rate. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 195034854
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Preparation and performance evaluation of a low-damage thickener suitable for fracturing medium and deep coalbed methane.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Qiujia%22">Hu, Qiujia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Biwu%22">Chen, Biwu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yongqi%22">Zhang, Yongqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Qingchuan%22">Wang, Qingchuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yao%2C+Wei%22">Yao, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Keyou%22">Chen, Keyou</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Quan%22">Zhou, Quan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+ChaoQun%22">Xie, ChaoQun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Chaozong%22">Yan, Chaozong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> ycz199605@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Dispersion+Science+%26+Technology%22">Journal of Dispersion Science & Technology</searchLink>. 2026, Vol. 47 Issue 9, p1816-1826. 11p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Coalbed+methane%22">Coalbed methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Fracturing+fluids%22">Fracturing fluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Rock+permeability%22">Rock permeability</searchLink><br />*<searchLink fieldCode="DE" term="%22Polymerization%22">Polymerization</searchLink><br />*<searchLink fieldCode="DE" term="%22Drag+reduction%22">Drag reduction</searchLink><br />*<searchLink fieldCode="DE" term="%22Viscosity%22">Viscosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Polymer+structure%22">Polymer structure</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The middle to deep coalbed methane reservoirs have the characteristics of higher burial depth, developed natural fractures and cleats, and are susceptible to damage from gel residue. To solve those problems, a CBM thickener was synthesized by using 2-acrylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA), methacryl propyl trimethyl ammonium chloride (DMC), and hydroxyethyl methacrylate (HEMA) monomers as raw materials through aqueous solution polymerization. The molecular structure and aqueous solution morphology were characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance hydrogen spectroscopy (1H NMR), and scanning electron microscopy (SEM), respectively. The drag reduction rate and viscosity of different thickener dosages were tested. When the thickener dosage were 0.1 wt%∼1.0 wt%, the drag reduction rate were 81.3%∼61.5%, and the viscosity was 6 mPa·s∼117 mPa·s, and further exploration was conducted by using a rheometer to investigate the temperature and shear resistance at 25–120 °C and the viscoelasticity at 25 °C and 120 °C of 0.6 wt% thickener aqueous solution, indicating its good performance as a fracturing fluid. Finally, the gas permeability changes of the gel breaker with a thickener dosages of 0.4 wt%∼1.0 wt% were investigated to calculate its matrix damage rate, which corresponds to 9.2%∼11.1%, and SEM have been used to characterize the morphological changes of the rock core before and after the gel breaker solution displacement, and verify its damage mechanism. Ultimately, it was proven that the synthesized CBM thickener can be suitable for fracturing operations in middle to deep coalbed methane, with high efficiency in drag reduction and low matrix damage rate. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/01932691.2025.2452595
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 1816
    Subjects:
      – SubjectFull: Coalbed methane
        Type: general
      – SubjectFull: Fracturing fluids
        Type: general
      – SubjectFull: Rock permeability
        Type: general
      – SubjectFull: Polymerization
        Type: general
      – SubjectFull: Drag reduction
        Type: general
      – SubjectFull: Viscosity
        Type: general
      – SubjectFull: Polymer structure
        Type: general
    Titles:
      – TitleFull: Preparation and performance evaluation of a low-damage thickener suitable for fracturing medium and deep coalbed methane.
        Type: main
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            NameFull: Hu, Qiujia
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            NameFull: Chen, Biwu
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            NameFull: Zhang, Yongqi
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            NameFull: Wang, Qingchuan
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            NameFull: Yao, Wei
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            NameFull: Chen, Keyou
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            NameFull: Zhou, Quan
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            NameFull: Xie, ChaoQun
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            NameFull: Yan, Chaozong
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          Dates:
            – D: 01
              M: 08
              Text: 2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 01932691
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              Value: 47
            – Type: issue
              Value: 9
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            – TitleFull: Journal of Dispersion Science & Technology
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