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A Numerical Investigation of Fault Slip Induced by Injection–Production Operations in Oilfields.

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Title: A Numerical Investigation of Fault Slip Induced by Injection–Production Operations in Oilfields.
Authors: Zheng, Xianbao1 (AUTHOR) zhengxianbao@petrochina.com.cn, Jiang, Xueyan1,2 (AUTHOR), Zhu, Lihong1,3 (AUTHOR), Lu, Jiyuan1,4 (AUTHOR), Qiao, Lu2,5 (AUTHOR), Gao, Tingting3,6 (AUTHOR), Zhang, Tingting1,4 (AUTHOR), Gu, Zichen2,5 (AUTHOR), Chen, Tianyu3,6 (AUTHOR), Zhang, Xiaoyu4,6 (AUTHOR)
Source: Energies (19961073). Feb2026, Vol. 19 Issue 3, p840. 19p.
Subject Terms: *Oil fields, *Computer simulation, *Earthquake hazard analysis, *Slow earthquakes, *Fluid-structure interaction
Abstract: During oilfield injection and production operations, fluid injection and withdrawal can significantly alter the stress state around faults, potentially triggering fault reactivation and even seismic events, which has become a focal issue in both industry and academia. In this study, based on fluid–solid coupling theory and the rate-and-state friction constitutive model, a mechanical framework was developed to evaluate fault shear slip behavior induced by injection–production activities. Numerical simulations were conducted using COMSOL Multiphysics to systematically investigate the effects of injection–production rate, operational schemes, well placement, reservoir permeability, and fault dip angle on fault stability. The results indicate that higher injection–production rates, non-steady operational schemes, injection wells located closer to faults, production wells farther from faults, lower fault core permeability, and larger fault dip angles can significantly enhance fluid pressure buildup and effective stress variations within the fault core zone. These processes lead to pronounced increases in Coulomb Failure Stress (CFS) and reductions in critical stiffness, thereby elevating the risk of fault instability and slip. Overall, the findings suggest that optimizing injection–production parameters and well placement can effectively mitigate the likelihood of fault reactivation. This study provides theoretical insights into the mechanisms of injection–production-induced fault slip and offers valuable references for safe oilfield operations and seismic risk assessment. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 191587319
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: A Numerical Investigation of Fault Slip Induced by Injection–Production Operations in Oilfields.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Zheng%2C+Xianbao%22">Zheng, Xianbao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhengxianbao@petrochina.com.cn</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Xueyan%22">Jiang, Xueyan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Lihong%22">Zhu, Lihong</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Jiyuan%22">Lu, Jiyuan</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qiao%2C+Lu%22">Qiao, Lu</searchLink><relatesTo>2,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Tingting%22">Gao, Tingting</searchLink><relatesTo>3,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Tingting%22">Zhang, Tingting</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gu%2C+Zichen%22">Gu, Zichen</searchLink><relatesTo>2,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Tianyu%22">Chen, Tianyu</searchLink><relatesTo>3,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xiaoyu%22">Zhang, Xiaoyu</searchLink><relatesTo>4,6</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Feb2026, Vol. 19 Issue 3, p840. 19p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Oil+fields%22">Oil fields</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Earthquake+hazard+analysis%22">Earthquake hazard analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Slow+earthquakes%22">Slow earthquakes</searchLink><br />*<searchLink fieldCode="DE" term="%22Fluid-structure+interaction%22">Fluid-structure interaction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: During oilfield injection and production operations, fluid injection and withdrawal can significantly alter the stress state around faults, potentially triggering fault reactivation and even seismic events, which has become a focal issue in both industry and academia. In this study, based on fluid–solid coupling theory and the rate-and-state friction constitutive model, a mechanical framework was developed to evaluate fault shear slip behavior induced by injection–production activities. Numerical simulations were conducted using COMSOL Multiphysics to systematically investigate the effects of injection–production rate, operational schemes, well placement, reservoir permeability, and fault dip angle on fault stability. The results indicate that higher injection–production rates, non-steady operational schemes, injection wells located closer to faults, production wells farther from faults, lower fault core permeability, and larger fault dip angles can significantly enhance fluid pressure buildup and effective stress variations within the fault core zone. These processes lead to pronounced increases in Coulomb Failure Stress (CFS) and reductions in critical stiffness, thereby elevating the risk of fault instability and slip. Overall, the findings suggest that optimizing injection–production parameters and well placement can effectively mitigate the likelihood of fault reactivation. This study provides theoretical insights into the mechanisms of injection–production-induced fault slip and offers valuable references for safe oilfield operations and seismic risk assessment. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en19030840
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        Text: English
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        PageCount: 19
        StartPage: 840
    Subjects:
      – SubjectFull: Oil fields
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Earthquake hazard analysis
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      – SubjectFull: Slow earthquakes
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      – SubjectFull: Fluid-structure interaction
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      – TitleFull: A Numerical Investigation of Fault Slip Induced by Injection–Production Operations in Oilfields.
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 19
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