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Development and Evaluation of Mesoporous SiO 2 Nanoparticle-Based Sustained-Release Gel Breaker for Clean Fracturing Fluids.

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Title: Development and Evaluation of Mesoporous SiO 2 Nanoparticle-Based Sustained-Release Gel Breaker for Clean Fracturing Fluids.
Authors: Fei, Guiqiang1 (AUTHOR), Liu, Banghua1 (AUTHOR) bs240811025@sust.edu.cn, Guo, Liyuan1 (AUTHOR), Chang, Yuan1 (AUTHOR), Xue, Boliang1 (AUTHOR)
Source: Polymers (20734360). Aug2025, Vol. 17 Issue 15, p2078. 18p.
Subjects: Mesoporous silica, Controlled release technology, Coalbed methane, Nanoparticles, Fracturing fluids, Controlled release preparations
Abstract: To address critical technical challenges in coalbed methane fracturing, including the uncontrollable release rate of conventional breaker agents and incomplete gel breaking, this study designs and fabricates an intelligent controlled-release breaker system based on paraffin-coated mesoporous silica nanoparticle carriers. Three types of mesoporous silica (MSN) carriers with distinct pore sizes are synthesized via the sol-gel method using CTAB, P123, and F127 as structure-directing agents, respectively. Following hydrophobic modification with octyltriethoxysilane, n-butanol breaker agents are loaded into the carriers, and a temperature-responsive controlled-release system is constructed via paraffin coating technology. The pore size distribution was analyzed by the BJH model, confirming that the average pore diameters of CTAB-MSNs, P123-MSNs, and F127-MSNs were 5.18 nm, 6.36 nm, and 6.40 nm, respectively. The BET specific surface areas were 686.08, 853.17, and 946.89 m2/g, exhibiting an increasing trend with the increase in pore size. Drug-loading performance studies reveal that at the optimal loading concentration of 30 mg/mL, the loading efficiencies of n-butanol on the three carriers reach 28.6%, 35.2%, and 38.9%, respectively. The release behavior study under simulated reservoir temperature conditions (85 °C) reveals that the paraffin-coated system exhibits a distinct three-stage release pattern: a lag phase (0–1 h) caused by paraffin encapsulation, a rapid release phase (1–8 h) induced by high-temperature concentration diffusion, and a sustained release phase (8–30 h) attributed to nano-mesoporous characteristics. This intelligent controlled-release breaker demonstrates excellent temporal compatibility with coalbed methane fracturing processes, providing a novel technical solution for the efficient and clean development of coalbed methane. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Development and Evaluation of Mesoporous SiO 2 Nanoparticle-Based Sustained-Release Gel Breaker for Clean Fracturing Fluids.
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  Data: <searchLink fieldCode="AR" term="%22Fei%2C+Guiqiang%22">Fei, Guiqiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Banghua%22">Liu, Banghua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> bs240811025@sust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Guo%2C+Liyuan%22">Guo, Liyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chang%2C+Yuan%22">Chang, Yuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Boliang%22">Xue, Boliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Aug2025, Vol. 17 Issue 15, p2078. 18p.
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  Data: <searchLink fieldCode="DE" term="%22Mesoporous+silica%22">Mesoporous silica</searchLink><br /><searchLink fieldCode="DE" term="%22Controlled+release+technology%22">Controlled release technology</searchLink><br /><searchLink fieldCode="DE" term="%22Coalbed+methane%22">Coalbed methane</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Fracturing+fluids%22">Fracturing fluids</searchLink><br /><searchLink fieldCode="DE" term="%22Controlled+release+preparations%22">Controlled release preparations</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To address critical technical challenges in coalbed methane fracturing, including the uncontrollable release rate of conventional breaker agents and incomplete gel breaking, this study designs and fabricates an intelligent controlled-release breaker system based on paraffin-coated mesoporous silica nanoparticle carriers. Three types of mesoporous silica (MSN) carriers with distinct pore sizes are synthesized via the sol-gel method using CTAB, P123, and F127 as structure-directing agents, respectively. Following hydrophobic modification with octyltriethoxysilane, n-butanol breaker agents are loaded into the carriers, and a temperature-responsive controlled-release system is constructed via paraffin coating technology. The pore size distribution was analyzed by the BJH model, confirming that the average pore diameters of CTAB-MSNs, P123-MSNs, and F127-MSNs were 5.18 nm, 6.36 nm, and 6.40 nm, respectively. The BET specific surface areas were 686.08, 853.17, and 946.89 m2/g, exhibiting an increasing trend with the increase in pore size. Drug-loading performance studies reveal that at the optimal loading concentration of 30 mg/mL, the loading efficiencies of n-butanol on the three carriers reach 28.6%, 35.2%, and 38.9%, respectively. The release behavior study under simulated reservoir temperature conditions (85 °C) reveals that the paraffin-coated system exhibits a distinct three-stage release pattern: a lag phase (0–1 h) caused by paraffin encapsulation, a rapid release phase (1–8 h) induced by high-temperature concentration diffusion, and a sustained release phase (8–30 h) attributed to nano-mesoporous characteristics. This intelligent controlled-release breaker demonstrates excellent temporal compatibility with coalbed methane fracturing processes, providing a novel technical solution for the efficient and clean development of coalbed methane. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/polym17152078
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      – Code: eng
        Text: English
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        PageCount: 18
        StartPage: 2078
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      – SubjectFull: Mesoporous silica
        Type: general
      – SubjectFull: Controlled release technology
        Type: general
      – SubjectFull: Coalbed methane
        Type: general
      – SubjectFull: Nanoparticles
        Type: general
      – SubjectFull: Fracturing fluids
        Type: general
      – SubjectFull: Controlled release preparations
        Type: general
    Titles:
      – TitleFull: Development and Evaluation of Mesoporous SiO 2 Nanoparticle-Based Sustained-Release Gel Breaker for Clean Fracturing Fluids.
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            NameFull: Fei, Guiqiang
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            – D: 01
              M: 08
              Text: Aug2025
              Type: published
              Y: 2025
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