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A composition-based model for methane adsorption of overmature shales in Wufeng and Longmaxi Formation, Sichuan Basin

文献类型：期刊论文

作者Jiang WB(江文滨); Cao GH(曹高辉); Luo, Chao2,3; Lin M(林缅); Ji LL(姬莉莉); Zhou, Ji4,5
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2022-02
卷号429页码:130766
关键词Shale gas Wufeng-Longmaxi Methane adsorption Langmuir pressure Clay
ISSN号1385-8947
DOI10.1016/j.cej.2021.130766
英文摘要The Wufeng-Longmaxi Formation shale in Sichuan Basin is the main strata of shale gas exploration and devel-opment in China. Adsorbed methane is an important part of the total shale gas content. The influence of shale composition on adsorption characteristics is complex, and it is difficult to obtain a comprehensive understanding without a sufficient amount of data. In this work, the total organic carbon (TOC), X-ray diffraction (XRD) mineral analysis, and the excess methane adsorption isotherms with pressure up to 50 MPa at 40 degrees C of 106 overmature shale samples with TOC of 0.8%-9.0% and clay content of 2%-58% that belong to Wufeng-Longmaxi formation from 10 shale gas wells in Sichuan Basin, China are experimentally investigated and analyzed. New correlations found between compositions and methane adsorption characteristic parameters guide the establishment of a composition-based methane adsorption model that the excess adsorption isotherm of shale is the content-weighted sum of equivalent unit-content excess isotherms for organic matter and clay. With this model, the differences of excess isotherms of these two compositions and the differences of clay-contribution to methane adsorption for different sublayers are disclosed. It is beneficial to improve the accuracy of shale reservoir evaluation of studied blocks under the condition of limited coring and deepening the understanding of the underlying mechanism of methane adsorption characteristics.
学科主题Engineering, Environmental ; Engineering, Chemical
分类号一类
语种英语
WOS记录号WOS:000722469100002
资助机构National Natural Science Foundation of China [42030808, 41690132, 41872163] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA14010304] ; PetroChina Science and Technology Major Project [2019F-31-01]
其他责任者Cao, GH ; Lin, M (corresponding author), Inst Mech Chinese Acad Sci, Beijing 100190, Peoples R China. ; Cao, GH ; Lin, M (corresponding author), Chinese Acad Sci, Beijing, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/90151]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Shale Gas Res Inst PetroChina Southwest Oil & Gas, Chengdu 610051, Sichuan, Peoples R China
2.PetroChina Southwest Oil & Gasfield Co, Chengdu 610051, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Beijing, Peoples R China
5.Inst Mech Chinese Acad Sci, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Jiang WB,Cao GH,Luo, Chao,et al. A composition-based model for methane adsorption of overmature shales in Wufeng and Longmaxi Formation, Sichuan Basin[J]. CHEMICAL ENGINEERING JOURNAL,2022,429:130766.
APA 江文滨,曹高辉,Luo, Chao,林缅,姬莉莉,&Zhou, Ji.(2022).A composition-based model for methane adsorption of overmature shales in Wufeng and Longmaxi Formation, Sichuan Basin.CHEMICAL ENGINEERING JOURNAL,429,130766.
MLA 江文滨,et al."A composition-based model for methane adsorption of overmature shales in Wufeng and Longmaxi Formation, Sichuan Basin".CHEMICAL ENGINEERING JOURNAL 429(2022):130766.

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来源：力学研究所

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