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Reservoir characteristics and influencing factors of multilithofacies shales in the Lianggaoshan Formation, Northeast Sichuan Basin.

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Title: Reservoir characteristics and influencing factors of multilithofacies shales in the Lianggaoshan Formation, Northeast Sichuan Basin.
Authors: Zhou, Yuhang1, Tang, Xin1 mikechouzyh@foxmail.com, Li, Mian1,2, Chen, Qiuqi1, Yan, Zhangping1, Jiang, Haoran3, He, Ruiyu1, Li, Linyan1, Zhou, Xiaoyi1
Source: Oil Shale. 2026, Vol. 43 Issue 1, p31-53. 23p.
Subjects: Shale, Geological formations, Mineralogical chemistry, Porosity, Organic compounds, Petroleum engineering, Shale oils
Geographic Terms: Sichuan Sheng (China)
Abstract: This study focuses on the shale of the Lianggaoshan Formation in the Northeast Sichuan Basin, aiming to analyze the pore structure characteristics and influencing factors of its lithofacies - critical for shale oil exploration, as the area has seen major shale oil and gas exploration breakthroughs. Fresh outcrop shale samples were collected in the field, followed by experiments including polarized-light microscope thin-section identification, X-ray diffraction, total organic carbon analysis, gas adsorption, high-pressure mercury intrusion, and scanning electron microscopy. Four lithofacies were classified. Results show the shale contains micropores, mesopores, and macropores; total organic carbon correlates positively with micropore/mesopore parameters but negatively with macropores, while quartz content shows the opposite. The Frenkel-Halsey-Hill fractal dimension correlates positively with total organic carbon, feldspar, and clay minerals, and negatively with quartz. This provides a key theoretical basis for local Lianggaoshan Formation shale oil exploration. [ABSTRACT FROM AUTHOR]
Copyright of Oil Shale is the property of Teaduste Akadeemia Kirjastus 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 192026447
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Reservoir characteristics and influencing factors of multilithofacies shales in the Lianggaoshan Formation, Northeast Sichuan Basin.
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  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Yuhang%22">Zhou, Yuhang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tang%2C+Xin%22">Tang, Xin</searchLink><relatesTo>1</relatesTo><i> mikechouzyh@foxmail.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Mian%22">Li, Mian</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Qiuqi%22">Chen, Qiuqi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yan%2C+Zhangping%22">Yan, Zhangping</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Haoran%22">Jiang, Haoran</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22He%2C+Ruiyu%22">He, Ruiyu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Linyan%22">Li, Linyan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xiaoyi%22">Zhou, Xiaoyi</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Oil+Shale%22">Oil Shale</searchLink>. 2026, Vol. 43 Issue 1, p31-53. 23p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Shale%22">Shale</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+formations%22">Geological formations</searchLink><br /><searchLink fieldCode="DE" term="%22Mineralogical+chemistry%22">Mineralogical chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum+engineering%22">Petroleum engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Shale+oils%22">Shale oils</searchLink>
– Name: SubjectGeographic
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  Data: <searchLink fieldCode="DE" term="%22Sichuan+Sheng+%28China%29%22">Sichuan Sheng (China)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study focuses on the shale of the Lianggaoshan Formation in the Northeast Sichuan Basin, aiming to analyze the pore structure characteristics and influencing factors of its lithofacies - critical for shale oil exploration, as the area has seen major shale oil and gas exploration breakthroughs. Fresh outcrop shale samples were collected in the field, followed by experiments including polarized-light microscope thin-section identification, X-ray diffraction, total organic carbon analysis, gas adsorption, high-pressure mercury intrusion, and scanning electron microscopy. Four lithofacies were classified. Results show the shale contains micropores, mesopores, and macropores; total organic carbon correlates positively with micropore/mesopore parameters but negatively with macropores, while quartz content shows the opposite. The Frenkel-Halsey-Hill fractal dimension correlates positively with total organic carbon, feldspar, and clay minerals, and negatively with quartz. This provides a key theoretical basis for local Lianggaoshan Formation shale oil exploration. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Oil Shale is the property of Teaduste Akadeemia Kirjastus 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.3176/oil.2026.1.02
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 23
        StartPage: 31
    Subjects:
      – SubjectFull: Shale
        Type: general
      – SubjectFull: Geological formations
        Type: general
      – SubjectFull: Mineralogical chemistry
        Type: general
      – SubjectFull: Porosity
        Type: general
      – SubjectFull: Organic compounds
        Type: general
      – SubjectFull: Petroleum engineering
        Type: general
      – SubjectFull: Shale oils
        Type: general
      – SubjectFull: Sichuan Sheng (China)
        Type: general
    Titles:
      – TitleFull: Reservoir characteristics and influencing factors of multilithofacies shales in the Lianggaoshan Formation, Northeast Sichuan Basin.
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            NameFull: Zhou, Yuhang
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            NameFull: Tang, Xin
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            NameFull: Li, Mian
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            – D: 01
              M: 01
              Text: 2026
              Type: published
              Y: 2026
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