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Laboratory Measurements and Geophysical Investigation on the Characteristic Evaluation of Mud Shale in the Shetianqiao Formation of Central Hunan
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Xu DONG1, Yan LI1, *, Jie WANG1, Ning-bo CAI2, Xi-fang SONG1, Qiang-long LI1
Science Technology and Engineering | 2025, 25(19) : 7941 - 7952
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Science Technology and Engineering | 2025, 25(19): 7941-7952
• Papers∙Astronomy and Geosciences •
Laboratory Measurements and Geophysical Investigation on the Characteristic Evaluation of Mud Shale in the Shetianqiao Formation of Central Hunan
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Xu DONG1, Yan LI1, *, Jie WANG1, Ning-bo CAI2, Xi-fang SONG1, Qiang-long LI1
Affiliations
  • 1 Changsha General Survey of Natural Resources Center, China Geological Survey, Changsha 410600, China
  • 2 New Geological Energy Exploration and Development Engineering, Technology Research Center of Hunan, Changsha 410014, China
Published: 2025-07-08 doi: 10.12404/j.issn.1671-1815.2405705
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The Shetianqiao Formation of the Devonian in central Hunan is an important shale gas reservoir in the Taihetang- Guanjiazui area. However, limited understanding of its geophysical and geochemical signatures has hindered the gas reservoir's large-scale exploration and exploitation. A research and development methodology was presented here based on sample analysis and geophysical characterization. Specifically, the method utilized quantification of shale gas occurrence characteristics and distribution patterns in the Shetianqiao Formation using sample analysis and the magnetotelluric (MT) geophysical data inversion technique. The results show that the overall resistivity of favorable layers in the Shetianqiao Formation is less than 200 Ω·m, with a thickness range of 600 to 900 meters and an average burial depth of 0~1 000 meters. Furthermore, the MT method reveals 15 faults and their associated multiplexing segments. It is also confirms that the organic matter in the Shetianqiao Formation is primarily II2, with an organic carbon content ranging from 0.32% to 3.46% and an average at 0.80%. The average maturity Ro of the formation is 1.78%, indicating a high maturity stage.

sample analysis  /  geophysics  /  Shetianqiao Formation  /  mud shale
Xu DONG, Yan LI, Jie WANG, Ning-bo CAI, Xi-fang SONG, Qiang-long LI. Laboratory Measurements and Geophysical Investigation on the Characteristic Evaluation of Mud Shale in the Shetianqiao Formation of Central Hunan[J]. Science Technology and Engineering, 2025 , 25 (19) : 7941 -7952 . DOI: 10.12404/j.issn.1671-1815.2405705
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Article Info
doi: 10.12404/j.issn.1671-1815.2405705
  • Receive Date：2024-07-30
  • Online Date：2025-12-22
  • Published：2025-07-08
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  • Received：2024-07-30
  • Revised：2024-12-23
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    1 Changsha General Survey of Natural Resources Center, China Geological Survey, Changsha 410600, China
    2 New Geological Energy Exploration and Development Engineering, Technology Research Center of Hunan, Changsha 410014, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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