Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin
Recent exploration within the second member of Funing Formation（hereinafter referred to as Fu-2 member）in Gaoyou Sag of Subei Basin has marked a significant advancement in the understanding of shale oil potential, highlighting its role in enhancing future reserves and production. This study focuses...
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Editorial Department of Petroleum Reservoir Evaluation and Development
2024-06-01
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| Series: | Youqicang pingjia yu kaifa |
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| Online Access: | https://red.magtech.org.cn/fileup/2095-1426/PDF/1720587765671-895541115.pdf |
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| author | SUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei |
| author_facet | SUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei |
| author_sort | SUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei |
| collection | DOAJ |
| description | Recent exploration within the second member of Funing Formation（hereinafter referred to as Fu-2 member）in Gaoyou Sag of Subei Basin has marked a significant advancement in the understanding of shale oil potential, highlighting its role in enhancing future reserves and production. This study focuses on Well-X1, utilizing a comprehensive suite of analytical techniques, including imaging logging, core examinations, and micro thin section analysis, to investigate the fracture characteristics across different scales. Additionally, statistical analysis of fracture parameters and isotopic studies of stable carbon and oxygen in fracture fillings provide insights into the formation stages of the fracture. The research delves into the dynamic evolution of fractures and their influence on the accumulation of shale oil and gas. Key findings indicate that structural fractures, predominantly brittle shear and tensile shear fractures, are prevalent and characterized by substantial length and excellent transverse connectivity. Non-structural fractures, including bedding fractures and calcite veins, exhibit some areas of abnormal development. These natural fractures have undergone modifications during later stages, with incompletely filled fractures, pore spaces from dissolved fracture fillers, overpressure bedding fractures, and micro fractures identified as particularly favorable reservoir spaces for shale oil. The results of this study not only shed light on the complex fracture dynamics within the shale but also provide a robust theoretical foundation for evaluating deep shale oil prospects in Gaoyou Sag. |
| format | Article |
| id | doaj-art-575ad9d2fa1e4a1a9ea45103176f1936 |
| institution | DOAJ |
| issn | 2095-1426 |
| language | zho |
| publishDate | 2024-06-01 |
| publisher | Editorial Department of Petroleum Reservoir Evaluation and Development |
| record_format | Article |
| series | Youqicang pingjia yu kaifa |
| spelling | doaj-art-575ad9d2fa1e4a1a9ea45103176f19362025-08-20T03:19:18ZzhoEditorial Department of Petroleum Reservoir Evaluation and DevelopmentYouqicang pingjia yu kaifa2095-14262024-06-0114341442410.13809/j.cnki.cn32-1825/te.2024.03.011Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei BasinSUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei01. Sinopec Jiangsu Oilfield Company, Yangzhou, Jiangsu 225009, China;2. College of Geosciences, Northeast Petroleum University, Daqing, Heilongjiang 163318, ChinaRecent exploration within the second member of Funing Formation（hereinafter referred to as Fu-2 member）in Gaoyou Sag of Subei Basin has marked a significant advancement in the understanding of shale oil potential, highlighting its role in enhancing future reserves and production. This study focuses on Well-X1, utilizing a comprehensive suite of analytical techniques, including imaging logging, core examinations, and micro thin section analysis, to investigate the fracture characteristics across different scales. Additionally, statistical analysis of fracture parameters and isotopic studies of stable carbon and oxygen in fracture fillings provide insights into the formation stages of the fracture. The research delves into the dynamic evolution of fractures and their influence on the accumulation of shale oil and gas. Key findings indicate that structural fractures, predominantly brittle shear and tensile shear fractures, are prevalent and characterized by substantial length and excellent transverse connectivity. Non-structural fractures, including bedding fractures and calcite veins, exhibit some areas of abnormal development. These natural fractures have undergone modifications during later stages, with incompletely filled fractures, pore spaces from dissolved fracture fillers, overpressure bedding fractures, and micro fractures identified as particularly favorable reservoir spaces for shale oil. The results of this study not only shed light on the complex fracture dynamics within the shale but also provide a robust theoretical foundation for evaluating deep shale oil prospects in Gaoyou Sag.https://red.magtech.org.cn/fileup/2095-1426/PDF/1720587765671-895541115.pdf|gaoyou sag|fu-2 member|shale|characteristics of fractures|formation stage |
| spellingShingle | SUN Yaxiong,ZHU Xiangyu,QIU Xuming,LIU Qidong,DUAN Hongliang,QIU Yongfeng,GONG Lei Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin Youqicang pingjia yu kaifa |gaoyou sag|fu-2 member|shale|characteristics of fractures|formation stage |
| title | Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin |
| title_full | Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin |
| title_fullStr | Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin |
| title_full_unstemmed | Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin |
| title_short | Characteristics of shale fractures in the second member of Funing Formation in Gaoyou Sag of Subei Basin |
| title_sort | characteristics of shale fractures in the second member of funing formation in gaoyou sag of subei basin |
| topic | |gaoyou sag|fu-2 member|shale|characteristics of fractures|formation stage |
| url | https://red.magtech.org.cn/fileup/2095-1426/PDF/1720587765671-895541115.pdf |
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