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Chemical and carbon isotope fractionations of alkane gases desorbed from confined systems and the application toward shale gas reservoir

文献类型：期刊论文

作者Liu, Peng1,5; Wang, Xiaofeng1; Lin, Ying4; Liu, Changjie3; Li, Xiaofu2; Liu, Wenhui1
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2020-03-01
卷号113页码:13
关键词Chemical fractionation Isotope fractionation Adsorption matrix Shale gas desorption Rayleigh fractionation model
ISSN号0264-8172
DOI10.1016/j.marpetgeo.2019.104103
英文摘要Adsorption and desorption processes of shale gas possess particular characteristics compared to conventional natural gas. Previous studies conducted desorption experiments on fresh core samples to investigate the isotope and chemical fractionations during the desorption process. However, complete chemical and isotope fractionations cannot be obtained due to the loss of gases during the coring process. In this study, we utilized a modified experimental apparatus based on the fixed adsorption bed to conduct systematic desorption experiments in confined systems with different proportions of free and adsorbed gases. The results show that different adsorption capacities and non-synchronous desorption for alkane gas components are leading factors influencing chemical fractionation during the desorption process. Meanwhile, C-1/C-2 and C-1/(C-2 + C-2) vary with different proportions of adsorbed gases in the same adsorption matrix. Generally, isotope fractionation between the adsorbed and free phases during desorption follows the Rayleigh fractionation model. The linear correlations between proportions of adsorbed CH4 and isotope fractionation factors can be applied to predict the proportions of adsorbed gases. Calculations show that on average 55% of hydrocarbon gases exist at adsorbed state in shale gas from Yanchang Formation of Ordos Basin.
WOS关键词THERMAL MATURITY ; ADSORPTION ; COAL ; DIOXIDE ; METHANE ; CH4 ; CO2 ; DESORPTION ; BASIN ; FLOW
资助项目National Natural Science Foundation of China[41972134] ; Key Laboratory Project of Gansu Province[1309RTSA041]
WOS研究方向Geology
语种英语
WOS记录号WOS:000510804800053
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province
源URL[http://ir.iggcas.ac.cn/handle/132A11/95655]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Wang, Xiaofeng
作者单位1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, 229 Taibai North Rd, Xian 710069, Peoples R China
2.Sichuan Coal Field Geol Bur, Sichuan Key Lab Shale Gas Evaluat & Explorat, Chengdu 610073, Peoples R China
3.Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA
4.Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 USA
5.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Peng,Wang, Xiaofeng,Lin, Ying,et al. Chemical and carbon isotope fractionations of alkane gases desorbed from confined systems and the application toward shale gas reservoir[J]. MARINE AND PETROLEUM GEOLOGY,2020,113:13.
APA Liu, Peng,Wang, Xiaofeng,Lin, Ying,Liu, Changjie,Li, Xiaofu,&Liu, Wenhui.(2020).Chemical and carbon isotope fractionations of alkane gases desorbed from confined systems and the application toward shale gas reservoir.MARINE AND PETROLEUM GEOLOGY,113,13.
MLA Liu, Peng,et al."Chemical and carbon isotope fractionations of alkane gases desorbed from confined systems and the application toward shale gas reservoir".MARINE AND PETROLEUM GEOLOGY 113(2020):13.

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来源：地质与地球物理研究所

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