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pH-responsive clean fracturing fluid based on pseudo-trimeric surfactants.

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Title: pH-responsive clean fracturing fluid based on pseudo-trimeric surfactants.
Authors: Yin, Taiheng1,2 (AUTHOR) yintaiheng@163.com, Liu, Hanbin1,2 (AUTHOR), Wen, Xiaoyong1,2 (AUTHOR), Wang, Wenxiong1,2 (AUTHOR), Wang, Chengwang1,2 (AUTHOR), Yan, Zhaowen3 (AUTHOR), Yang, Zihao3 (AUTHOR)
Source: Colloid & Polymer Science. Mar2023, Vol. 301 Issue 3, p189-197. 9p.
Subjects: Fracturing fluids, Surface active agents, Gas reservoirs, Hydraulic fracturing, Petroleum reservoirs, Shale gas, Gas condensate reservoirs
Abstract: Viscoelastic surfactant fracturing fluids, also known as clean fracturing fluids, have attracted extensive attention in the field of hydraulic fracturing because of their advantages, such as complete gel breaking, no residues, and low formation damage. However, the complex synthesis process, high cost, and the inability to reuse have limited the practical application of clean fracturing fluids. Herein, a pH-responsive clean fracturing fluid with pH-regulated apparent phase and rheological behaviors was constructed based on the mechanism of pseudo-trimeric surfactant and wormlike micelles formed under specific pH conditions by N,N-dimethyl oleoaminde-propylamine and tricarballylic acid. The results show that the zero-shear viscosity of the fracturing fluid can reach more than 111.2 Pa·s, and it can switch between a high-viscosity gel state and a low-viscosity aqueous solution state more than four times by adjusting pH. The constructed clean fracturing fluid is suitable for medium and low-temperature oil and gas reservoirs. The viscosity of the fracturing fluid is still higher than 500 mPa·s after shearing at 60 °C and 170 s−1 for 60 min. In addition, the fracturing fluid can be completely broken within 1 h, and the gel broken-fluid has low viscosity and no residues. [ABSTRACT FROM AUTHOR]
Copyright of Colloid & Polymer Science is the property of Springer Nature 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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Header DbId: egs
DbLabel: Engineering Source
An: 162077796
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: pH-responsive clean fracturing fluid based on pseudo-trimeric surfactants.
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  Data: <searchLink fieldCode="JN" term="%22Colloid+%26+Polymer+Science%22">Colloid & Polymer Science</searchLink>. Mar2023, Vol. 301 Issue 3, p189-197. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Fracturing+fluids%22">Fracturing fluids</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+active+agents%22">Surface active agents</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+reservoirs%22">Gas reservoirs</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+fracturing%22">Hydraulic fracturing</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum+reservoirs%22">Petroleum reservoirs</searchLink><br /><searchLink fieldCode="DE" term="%22Shale+gas%22">Shale gas</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+condensate+reservoirs%22">Gas condensate reservoirs</searchLink>
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  Data: Viscoelastic surfactant fracturing fluids, also known as clean fracturing fluids, have attracted extensive attention in the field of hydraulic fracturing because of their advantages, such as complete gel breaking, no residues, and low formation damage. However, the complex synthesis process, high cost, and the inability to reuse have limited the practical application of clean fracturing fluids. Herein, a pH-responsive clean fracturing fluid with pH-regulated apparent phase and rheological behaviors was constructed based on the mechanism of pseudo-trimeric surfactant and wormlike micelles formed under specific pH conditions by N,N-dimethyl oleoaminde-propylamine and tricarballylic acid. The results show that the zero-shear viscosity of the fracturing fluid can reach more than 111.2 Pa·s, and it can switch between a high-viscosity gel state and a low-viscosity aqueous solution state more than four times by adjusting pH. The constructed clean fracturing fluid is suitable for medium and low-temperature oil and gas reservoirs. The viscosity of the fracturing fluid is still higher than 500 mPa·s after shearing at 60 °C and 170 s−1 for 60 min. In addition, the fracturing fluid can be completely broken within 1 h, and the gel broken-fluid has low viscosity and no residues. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Colloid & Polymer Science is the property of Springer Nature 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: 10.1007/s00396-023-05053-w
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 189
    Subjects:
      – SubjectFull: Fracturing fluids
        Type: general
      – SubjectFull: Surface active agents
        Type: general
      – SubjectFull: Gas reservoirs
        Type: general
      – SubjectFull: Hydraulic fracturing
        Type: general
      – SubjectFull: Petroleum reservoirs
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      – SubjectFull: Shale gas
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      – SubjectFull: Gas condensate reservoirs
        Type: general
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      – TitleFull: pH-responsive clean fracturing fluid based on pseudo-trimeric surfactants.
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            NameFull: Yin, Taiheng
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            NameFull: Liu, Hanbin
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            NameFull: Wen, Xiaoyong
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            NameFull: Wang, Wenxiong
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            NameFull: Wang, Chengwang
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            – D: 01
              M: 03
              Text: Mar2023
              Type: published
              Y: 2023
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