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Composition-based methane adsorption models for the Qiongzhusi Formation shale in Deyang-Anyue rift trough of Sichuan Basin, China, and its comparison with the Wufeng-Longmaxi Formation shale

文献类型：期刊论文

作者Wu, Jianfa3; Jiang, Wenbin1,2; Luo, Chao3; Lin, Mian1,2; Zhong, Kesu3; He, Yifan3; Li, Yanyou3; Nie, Yuhan3; Ji, Lili1,2; Cao, Gaohui2
刊名FUEL
出版日期2025-08-01
卷号393页码:15
关键词Shale Gas Qiongzhusi Formation Wufeng-Longmaxi Formation Methane Adsorption Organic Matter Clay Mineral
ISSN号0016-2361
DOI10.1016/j.fuel.2025.134976
通讯作者Jiang, Wenbin(jiangwenbin@imech.ac.cn)
英文摘要The Lower Cambrian Qiongzhusi (QZS) Formation marine shale in the aulacogen-uplift overlap area of DeyangAnyue rift trough of Sichuan Basin, China, has emerged as a key target for the next stage of shale gas development. However, a lack of quantitative understanding of methane adsorption characteristics and their relationship with composition hinders accurate gas content evaluation and optimal target selection. In this study, over 80 samples from different sublayers of the QZS Formation in two wells located in the rift trough and the slope belt were comprehensively analyzed. Multivariate linear regression identified organic matter and clay minerals as the dominant factors controlling methane adsorption. Composition-based models were developed to quantify adsorption capacity by summing the products of unit-content adsorption capacities of organic matter and clay minerals and their respective contents. Through the significant correlation between adsorption capacity and micropore volume, the strong control of organic matter and clay minerals on micropore volume was revealed. Compared to the Wufeng-Longmaxi (WF-LMX) Formation shale, the QZS Formation shale exhibits lessdeveloped micropores in unit-content clay minerals, and the unit-clay-mineral methane adsorption capacities are lower for the two wells. However, the QZS shale shows a higher meso/macropore volume fraction in the same porosity range and stronger matrix flow capacity, which enhances rapid gas desorption. These findings provide critical insights into the pore structure and adsorption mechanisms of the QZS Formation, offering theoretical guidance for selecting favorable development areas and optimizing shale gas extraction strategies in the Sichuan Basin.
WOS关键词SUPERCRITICAL METHANE ; SORPTION ISOTHERMS ; GAS-ADSORPTION ; BLACK SHALES ; EQUATION
资助项目National Natural Science Foundation of China[42030808] ; Project of Chinese Academy of Sciences[GJ04010303] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010304] ; Petro-China Science and Technology Major Project[2019F-31-01] ; Petro-China Science and Technology Major Project[2023ZZ21YJ04]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:001442122600001
资助机构National Natural Science Foundation of China ; Project of Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Petro-China Science and Technology Major Project
源URL[http://dspace.imech.ac.cn/handle/311007/100245]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Jiang, Wenbin
作者单位1.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
3.PetroChina Southwest Oil & Gasfield Co, Shale Gas Res Inst, Chengdu 610051, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Jianfa,Jiang, Wenbin,Luo, Chao,et al. Composition-based methane adsorption models for the Qiongzhusi Formation shale in Deyang-Anyue rift trough of Sichuan Basin, China, and its comparison with the Wufeng-Longmaxi Formation shale[J]. FUEL,2025,393:15.
APA Wu, Jianfa.,Jiang, Wenbin.,Luo, Chao.,Lin, Mian.,Zhong, Kesu.,...&Cao, Gaohui.(2025).Composition-based methane adsorption models for the Qiongzhusi Formation shale in Deyang-Anyue rift trough of Sichuan Basin, China, and its comparison with the Wufeng-Longmaxi Formation shale.FUEL,393,15.
MLA Wu, Jianfa,et al."Composition-based methane adsorption models for the Qiongzhusi Formation shale in Deyang-Anyue rift trough of Sichuan Basin, China, and its comparison with the Wufeng-Longmaxi Formation shale".FUEL 393(2025):15.

入库方式： OAI收割

来源：力学研究所

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