GIG OpenIR  > 有机地球化学国家重点实验室
Liu, Xiaodong1,2,3; Wang, Qiang1,2; Jia, Wanglu1,2,4; Song, Jianzhong1,2; Peng, Pingan1,2,3
Pyrolysis of an organic-rich shale containing type II kerogen before and after oil generation and expulsion: Implications for the generation of late hydrocarbon and hydrogen gases
Source PublicationJOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
ISSN0165-2370
2023-08-01
Volume173Pages:10
DOI10.1016/j.jaap.2023.106105
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
AbstractThermal simulation of late gas generation of source rock is critical for evaluating the potential of deep gas and shale gas. Retained oil and its interactions with thermally mature kerogen can have a significant impact on late gas generation from source rocks; however, previous studies commonly used expelled oil or total oil, which have different compositions from retained oil. In addition, molecular hydrogen (H2 gas) is not only a pyrolysis product but may also have significant effects on hydrocarbon formation. The effects of oil generation and expulsion, as well as retained oil, on H2 generation from source rocks are currently poorly understood. Our study involved twostage pyrolysis under high-pressure conditions: main oil generation and expulsion, followed by late gas generation. The yields of both hydrocarbon gas and H2 gas were determined and examined deeply in order to investigate the influence of key factors on late gas generation, such as oil generation and expulsion and the interactions between retained oil and mature kerogen. Furthermore, the influence of kerogen type and thermal maturity on late hydrocarbon gas potential was discussed with a literature review. Firstly, oil generation and expulsion could significantly reduce the yields of methane, C2-5 and H2 gases from the pyrolysis of shale. After oil expulsion, the mature shale produced both CH4 and H2, the majority of which came from the kerogen cracking. The interactions between mature kerogen and retained oil may have slightly promoted the generation of methane and inhibited the generation of H2, but they had little influence on the potential for total hydrocarbon gas. Secondly, the H2 generation process could be sub-divided into four stages, which correspond to early hydrocarbon gas generation (stage I), main C2-5 gas generation (stage II), main C2-5 gas cracking (stage III) and the latest methane generation (stage IV), respectively. More than 80% of the total H2 yields were produced in stages III and IV, suggesting that most of the H2 gas was generated through the demethylation, aromatization and condensation processes. Finally, this study concluded that the late hydrocarbon gas potential of different types of kerogen is mostly related to thermal maturity and can be represented by a simple power function.
KeywordCarbonaceous shale Type II kerogen Pyrolysis Oil expulsion Maturity Late gas
WOS IDWOS:001051912100001
Indexed BySCI
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.gig.ac.cn/handle/344008/74684
Collection有机地球化学国家重点实验室
Corresponding AuthorJia, Wanglu
Affiliation1.Chinese Acad Sci, Guangzhou Inst Geochem, State key Lab organ Geochem, Guangzhou 510640, Peoples R China
2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, 511 Kehua St, Guangzhou 510640, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaodong,Wang, Qiang,Jia, Wanglu,et al. Pyrolysis of an organic-rich shale containing type II kerogen before and after oil generation and expulsion: Implications for the generation of late hydrocarbon and hydrogen gases[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2023,173:10.
APA Liu, Xiaodong,Wang, Qiang,Jia, Wanglu,Song, Jianzhong,&Peng, Pingan.(2023).Pyrolysis of an organic-rich shale containing type II kerogen before and after oil generation and expulsion: Implications for the generation of late hydrocarbon and hydrogen gases.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,173,10.
MLA Liu, Xiaodong,et al."Pyrolysis of an organic-rich shale containing type II kerogen before and after oil generation and expulsion: Implications for the generation of late hydrocarbon and hydrogen gases".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 173(2023):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Xiaodong]'s Articles
[Wang, Qiang]'s Articles
[Jia, Wanglu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Xiaodong]'s Articles
[Wang, Qiang]'s Articles
[Jia, Wanglu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Xiaodong]'s Articles
[Wang, Qiang]'s Articles
[Jia, Wanglu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.