Pore Fractal and Structure Analysis of Pore-Filling Chlorite in Continental Shales: A Case Study from the Qingshankou Formation in the Gulong Sag Article Swipe
Kang Yuan
,
Rukai Zhu
,
Kouqi Liu
,
Jingya Zhang
,
Chang Liu
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/fractalfract9040266
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/fractalfract9040266
The successful exploration and development of shale oil in the clay-rich Gulong shale have sparked increased research into the influence of clay minerals on shale reservoirs. However, compared to chlorite in sandstones, limited studies have focused on the occurrence of chlorite in continental shales and its effects on shale reservoir properties. This study offers a comprehensive analysis of chlorite in Gulong shale samples from three wells at different diagenetic stages. Four primary chlorite occurrences are identified in the Gulong shale: Type I, which is chlorite filling dissolved pores in carbonate; Type II, which is isolated chlorite; Type III, which is chlorite filling organic matter; and Type IV, which is chlorite filling authigenic microquartz. Types I and III chlorites exhibit higher porosity, offering more storage space for shale reservoirs. Chlorites of Types I, III, and IV, filled with other substances, display higher fractal dimensions, indicating more complex pore structures. These complex pores are favorable for oil adsorption but hinder oil seepage. The processes of organic matter expulsion and dissolution, which intensify with increasing diagenesis, promote the development of Types I and III chlorites, thereby positively influencing the shale reservoir porosity of Gulong shale. This study underscores the influence of chlorite occurrences on shale reservoir properties, providing valuable insights for the future exploration and development of shale oil and gas.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/fractalfract9040266
- https://www.mdpi.com/2504-3110/9/4/266/pdf?version=1745238498
- OA Status
- gold
- Cited By
- 3
- References
- 68
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4409635876
All OpenAlex metadata
Raw OpenAlex JSON
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https://openalex.org/W4409635876Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/fractalfract9040266Digital Object Identifier
- Title
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Pore Fractal and Structure Analysis of Pore-Filling Chlorite in Continental Shales: A Case Study from the Qingshankou Formation in the Gulong SagWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-04-21Full publication date if available
- Authors
-
Kang Yuan, Rukai Zhu, Kouqi Liu, Jingya Zhang, Chang LiuList of authors in order
- Landing page
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https://doi.org/10.3390/fractalfract9040266Publisher landing page
- PDF URL
-
https://www.mdpi.com/2504-3110/9/4/266/pdf?version=1745238498Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://www.mdpi.com/2504-3110/9/4/266/pdf?version=1745238498Direct OA link when available
- Concepts
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Chlorite, Fractal, Pore water pressure, Fractal analysis, Fractal dimension, Geology, Petroleum engineering, Mineralogy, Chemical engineering, Materials science, Geotechnical engineering, Composite material, Engineering, Mathematics, Mathematical analysis, QuartzTop concepts (fields/topics) attached by OpenAlex
- Cited by
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3Total citation count in OpenAlex
- Citations by year (recent)
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2025: 3Per-year citation counts (last 5 years)
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68Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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