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Shale gas exploration potential and reservoir conditions of the Longmaxi Formation in the Changning area, Sichuan Basin, SW China: Evidence from mud gas isotope logging
Shi, Xuewen1,2; Kang, Shujuan3; Luo, Chao1,2; Wu, Wei1; Zhao, Shengxian1; Zhu, Di4; Zhang, Huanxu4; Yang, Yang5; Xiao, Zhenglu6,7; Li, Yong
2022-08-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume233Pages:10
AbstractThe Longmaxi Formation in the Sichuan Basin is one of the most important shale gas producing formations in China. Previous studies of shale gas were mostly carried out on based on laboratory analyses and did not provide effective guidelines for shale gas exploration. In this paper, we present a large amount of carbon isotopic data from mud gas isotope logging and rock-cutting headspace gas in wellsites. The 813C1 values showed a significant decrease at the bottom of the Longmaxi Formation. The 813C1 and 813C2 values in the Changning area were observed to be heavier than those in the Weiyuan and Jiaoshiba areas. The second half of the N216H27-3 horizontal well had obvious outgassing and carbon isotope fractionation effects. This indicates that the bottom of the Longmaxi Formation has better shale gas exploration potential. The shale gas of the Longmaxi Formation in the Changning area belongs to late kerogen cracking gas, where exploration prospects are poorer than those in the Weiyuan and Jiaoshiba areas. There were more oil cracking gas resources and better reservoir conditions at the end of the N216H27-3 horizontal well; therefore, drilling should be continued at this site.
KeywordMud gas isotope logging Isotope fractionation Shale gas Longmaxi Formation Sichuan Basin
DOI10.1016/j.jseaes.2022.105239
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS KeywordNATURAL-GAS ; REVERSALS ; ORIGIN ; ENRICHMENT ; FIELD ; GEOCHEMISTRY ; FACIES ; TRENDS ; CARBON
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA14050201]
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000802127500002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106068
Collection深部资源探测先导技术与装备研发中心
Corresponding AuthorXiao, Zhenglu
Affiliation1.Southwest Oil & Gas Field Co, Shale Gas Res Inst Petrochina, Chengdu 610051, Peoples R China
2.Key Lab Shale Gas Evalut & Exploitat Sichuan Prov, Chengdu 610051, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, CAS Engn Lab Deep Resources Equipment & Technol, Beijing 100029, Peoples R China
4.Grand Energy & Technol Co Ltd, Suzhou 215000, Peoples R China
5.Sichuan Changning Nat Gas Dev Co Ltd, Chengdu 610000, Peoples R China
6.Southwest Petr Univ, Sch Geosci Technol, 8 Xindu Rd,Xindu Dist, Chengdu 610000, Peoples R China
7.8 Xindu Rd,Xindu Dist, Chengdu 610000, Peoples R China
Recommended Citation
GB/T 7714
Shi, Xuewen,Kang, Shujuan,Luo, Chao,et al. Shale gas exploration potential and reservoir conditions of the Longmaxi Formation in the Changning area, Sichuan Basin, SW China: Evidence from mud gas isotope logging[J]. JOURNAL OF ASIAN EARTH SCIENCES,2022,233:10.
APA Shi, Xuewen.,Kang, Shujuan.,Luo, Chao.,Wu, Wei.,Zhao, Shengxian.,...&Li, Yong.(2022).Shale gas exploration potential and reservoir conditions of the Longmaxi Formation in the Changning area, Sichuan Basin, SW China: Evidence from mud gas isotope logging.JOURNAL OF ASIAN EARTH SCIENCES,233,10.
MLA Shi, Xuewen,et al."Shale gas exploration potential and reservoir conditions of the Longmaxi Formation in the Changning area, Sichuan Basin, SW China: Evidence from mud gas isotope logging".JOURNAL OF ASIAN EARTH SCIENCES 233(2022):10.
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