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Numerical simulation of fracture propagation in deep coal seam reservoirs.

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Title: Numerical simulation of fracture propagation in deep coal seam reservoirs.
Authors: Tian, Zhongzheng1 (AUTHOR) zhongzheng.tian@sinofts.com, Xiong, Zhuang2 (AUTHOR), Wei, Yuhua1 (AUTHOR), Ma, Shou1 (AUTHOR), Hu, Xiaodong2 (AUTHOR)
Source: Energy Science & Engineering. Oct2023, Vol. 11 Issue 10, p3559-3574. 16p.
Subject Terms: *Crack propagation, *Hydraulic fracturing, *Coal, *Petroleum prospecting, *Coalbed methane, *Oil spill cleanup
Abstract: As an unconventional oil and gas resource, coalbed methane has become a key area of unconventional oil and gas exploration worldwide, and hydraulic fracturing is the critical technology for the efficient stimulation of coalbed methane. However, due to the strong heterogeneity of deep coal seam reservoirs and the development of natural cleat fractures, the fracture propagation path is quite complex and difficult to capture. In this study, we propose a hydraulic fracture propagation simulation method using the ABAQUS Software for natural cleat fracture networks and a fluid–solid fully coupled two‐dimensional finite element model with the global embedded cohesive zone model (CZM). CZM is established to simulate the propagation of hydraulic fractures in the heterogeneous combination of coal rock and mudstone. The accuracy of this model is verified by using Blanton's experiment criterion. Finally, the model is used to simulate the influence of cleat angle, cleat density, length ratio of coal rock and mudstone combination, and construction displacement on the propagation behavior of hydraulic fractures. This study aims to deepen the understanding of the mechanism of hydraulic fracture propagation in deep coal seams and provides guidance for deep coal seam fracturing and hydraulic fracturing design. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 172875726
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  Label: Title
  Group: Ti
  Data: Numerical simulation of fracture propagation in deep coal seam reservoirs.
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  Data: <searchLink fieldCode="AR" term="%22Tian%2C+Zhongzheng%22">Tian, Zhongzheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhongzheng.tian@sinofts.com</i><br /><searchLink fieldCode="AR" term="%22Xiong%2C+Zhuang%22">Xiong, Zhuang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Yuhua%22">Wei, Yuhua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Shou%22">Ma, Shou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Xiaodong%22">Hu, Xiaodong</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energy+Science+%26+Engineering%22">Energy Science & Engineering</searchLink>. Oct2023, Vol. 11 Issue 10, p3559-3574. 16p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Crack+propagation%22">Crack propagation</searchLink><br />*<searchLink fieldCode="DE" term="%22Hydraulic+fracturing%22">Hydraulic fracturing</searchLink><br />*<searchLink fieldCode="DE" term="%22Coal%22">Coal</searchLink><br />*<searchLink fieldCode="DE" term="%22Petroleum+prospecting%22">Petroleum prospecting</searchLink><br />*<searchLink fieldCode="DE" term="%22Coalbed+methane%22">Coalbed methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Oil+spill+cleanup%22">Oil spill cleanup</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: As an unconventional oil and gas resource, coalbed methane has become a key area of unconventional oil and gas exploration worldwide, and hydraulic fracturing is the critical technology for the efficient stimulation of coalbed methane. However, due to the strong heterogeneity of deep coal seam reservoirs and the development of natural cleat fractures, the fracture propagation path is quite complex and difficult to capture. In this study, we propose a hydraulic fracture propagation simulation method using the ABAQUS Software for natural cleat fracture networks and a fluid–solid fully coupled two‐dimensional finite element model with the global embedded cohesive zone model (CZM). CZM is established to simulate the propagation of hydraulic fractures in the heterogeneous combination of coal rock and mudstone. The accuracy of this model is verified by using Blanton's experiment criterion. Finally, the model is used to simulate the influence of cleat angle, cleat density, length ratio of coal rock and mudstone combination, and construction displacement on the propagation behavior of hydraulic fractures. This study aims to deepen the understanding of the mechanism of hydraulic fracture propagation in deep coal seams and provides guidance for deep coal seam fracturing and hydraulic fracturing design. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/ese3.1540
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 3559
    Subjects:
      – SubjectFull: Crack propagation
        Type: general
      – SubjectFull: Hydraulic fracturing
        Type: general
      – SubjectFull: Coal
        Type: general
      – SubjectFull: Petroleum prospecting
        Type: general
      – SubjectFull: Coalbed methane
        Type: general
      – SubjectFull: Oil spill cleanup
        Type: general
    Titles:
      – TitleFull: Numerical simulation of fracture propagation in deep coal seam reservoirs.
        Type: main
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          Name:
            NameFull: Tian, Zhongzheng
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            NameFull: Xiong, Zhuang
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            NameFull: Wei, Yuhua
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            NameFull: Ma, Shou
      – PersonEntity:
          Name:
            NameFull: Hu, Xiaodong
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          Dates:
            – D: 01
              M: 10
              Text: Oct2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 20500505
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              Value: 11
            – Type: issue
              Value: 10
          Titles:
            – TitleFull: Energy Science & Engineering
              Type: main
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