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Junsheng Luo, Wei Zhang, Zhifeng Wan, Tongzhi Lu, Xuewan Wu, Juncheng Hu, Chaoqi Shi, Zihan Li, Qiqi Chen, Guifeng Wang, Lihua Zuo, Yuefeng Sun. The Controlling Role of Gas Chimney Episodic Activity and Its Thermal Effects on Gas Hydrate System Development. Journal of Earth Science. doi: 10.1007/s12583-025-0287-1
Citation: Junsheng Luo, Wei Zhang, Zhifeng Wan, Tongzhi Lu, Xuewan Wu, Juncheng Hu, Chaoqi Shi, Zihan Li, Qiqi Chen, Guifeng Wang, Lihua Zuo, Yuefeng Sun. The Controlling Role of Gas Chimney Episodic Activity and Its Thermal Effects on Gas Hydrate System Development. Journal of Earth Science. doi: 10.1007/s12583-025-0287-1

The Controlling Role of Gas Chimney Episodic Activity and Its Thermal Effects on Gas Hydrate System Development

doi: 10.1007/s12583-025-0287-1
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This work was supported by the National Natural Science Foundation of China (42076054, 42476224, 42176215), Hainan Province Science and Technology Special Fund (ZDYF2023GXJS008), the First Batch of "Nanhai New Star" Project (NHXXRCXM202357), and the National Engineering Research Center of Gas Hydrate Exploration and Development (NERC2024002).

  • Available Online: 29 May 2025
  • This study investigates the gas hydrate accumulation mechanisms controlled by gas chimney dynamics in the Qiongdongnan Basin, integrating 3D seismic, well logging, and in-situ temperature data from the GMGS5 expedition. We established a thermodynamic model for diapiric systems (validated by drilling data with <1℃ error), achieving quantitative characterization of heat transfer processes within gas chimneys. The model reveals: (1) thermal fluids cooling from 180℃ at the base to 21℃ at the summit; (2) candle-like thermal radiation (300 m lateral influence) creating a distinctive "thin-center, thick-edge" hydrate distribution pattern; (3) episodic chimney activity inducing dynamic variations in the base of gas hydrate stability zone (118-493 mbsf). The proposed five-stage dynamic accumulation model couples chimney evolution with thermal effects, providing a novel theoretical framework for understanding hydrate formation in fluid seepage systems.

     

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    通讯作者: 陈斌, bchen63@163.com
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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