Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin
Abstract Research on the type, size, structure, and other characteristics of shale micro pore-fracture and their genesis is one of the core index for Shale gas study. Based on systematically collected shale samples from outcrop profiles and well cores, the experiments of thin-section observation, sc...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-12-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-024-81804-1 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846137231634333696 |
|---|---|
| author | Yangwei Feng Yan Ren Wei Sun Ting Jiang |
| author_facet | Yangwei Feng Yan Ren Wei Sun Ting Jiang |
| author_sort | Yangwei Feng |
| collection | DOAJ |
| description | Abstract Research on the type, size, structure, and other characteristics of shale micro pore-fracture and their genesis is one of the core index for Shale gas study. Based on systematically collected shale samples from outcrop profiles and well cores, the experiments of thin-section observation, scanning electron microscopy, energy-dispersive X-ray spectroscopy, whole-rock analysis, rock–eval pyrolysis and basin simulation analysis were performed to study the micro pore-fracture characteristics and its main controlling factors for the development of shale pores in Tiemulike Formation in Yining Basin. The results show that four types of micro pore-fractures were identified: organic hydrocarbon-generating micro pores, granular dissolved micro pores, intergranular micro pores, and micro-fracture. The development of micro pores in shales is influenced by the internal material composition of the shale reservoir and external temperature conditions. The high organic carbon content with a high degree of thermal evolution led to the development of numerous micro pores, and the main micro pores were produced by shrinking the hydrocarbon generation volume due to the thermal evolution of organic matter. The development of micro-fractures was found to be favoured by the high content of brittle minerals and overpressure in the formation. |
| format | Article |
| id | doaj-art-c67b7585a2064f5b8bcb6a2a9fe26761 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-c67b7585a2064f5b8bcb6a2a9fe267612024-12-08T12:25:21ZengNature PortfolioScientific Reports2045-23222024-12-0114111710.1038/s41598-024-81804-1Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining BasinYangwei Feng0Yan Ren1Wei Sun2Ting Jiang3School of Geography and Tourism, Nanyang Normal UniversitySchool of Geography and Tourism, Nanyang Normal UniversityState Key Laboratory of Continental Dynamics, Northwest UniversityXi’an Center of Geological Survey, China Geological SurveyAbstract Research on the type, size, structure, and other characteristics of shale micro pore-fracture and their genesis is one of the core index for Shale gas study. Based on systematically collected shale samples from outcrop profiles and well cores, the experiments of thin-section observation, scanning electron microscopy, energy-dispersive X-ray spectroscopy, whole-rock analysis, rock–eval pyrolysis and basin simulation analysis were performed to study the micro pore-fracture characteristics and its main controlling factors for the development of shale pores in Tiemulike Formation in Yining Basin. The results show that four types of micro pore-fractures were identified: organic hydrocarbon-generating micro pores, granular dissolved micro pores, intergranular micro pores, and micro-fracture. The development of micro pores in shales is influenced by the internal material composition of the shale reservoir and external temperature conditions. The high organic carbon content with a high degree of thermal evolution led to the development of numerous micro pores, and the main micro pores were produced by shrinking the hydrocarbon generation volume due to the thermal evolution of organic matter. The development of micro-fractures was found to be favoured by the high content of brittle minerals and overpressure in the formation.https://doi.org/10.1038/s41598-024-81804-1Shale gasMicro poreControlling factorsThermal evolutionBrittle minerals |
| spellingShingle | Yangwei Feng Yan Ren Wei Sun Ting Jiang Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin Scientific Reports Shale gas Micro pore Controlling factors Thermal evolution Brittle minerals |
| title | Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin |
| title_full | Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin |
| title_fullStr | Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin |
| title_full_unstemmed | Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin |
| title_short | Characteristics and main controlling factors for the development of shale micro pore-fracture in Tiemulike Formation, Yining Basin |
| title_sort | characteristics and main controlling factors for the development of shale micro pore fracture in tiemulike formation yining basin |
| topic | Shale gas Micro pore Controlling factors Thermal evolution Brittle minerals |
| url | https://doi.org/10.1038/s41598-024-81804-1 |
| work_keys_str_mv | AT yangweifeng characteristicsandmaincontrollingfactorsforthedevelopmentofshalemicroporefractureintiemulikeformationyiningbasin AT yanren characteristicsandmaincontrollingfactorsforthedevelopmentofshalemicroporefractureintiemulikeformationyiningbasin AT weisun characteristicsandmaincontrollingfactorsforthedevelopmentofshalemicroporefractureintiemulikeformationyiningbasin AT tingjiang characteristicsandmaincontrollingfactorsforthedevelopmentofshalemicroporefractureintiemulikeformationyiningbasin |