Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/04101917386 |
The architecture of organic matter and its pores in highly mature gas shales of the lower Silurian Longmaxi Formation in the upper Yangtze platform, south China | |
Ji, Wenming1,2; Hao, Fang1; Schulz, Hans-Martin3; Song, Yan4; Tian, Jinqiang1,2 | |
2019-12-01 | |
发表期刊 | AAPG BULLETIN
![]() |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2019 |
卷号 | 103期号:12页码:2909-2942 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Germany |
英文摘要 | The nanometer-scale architecture of organic matter (OM) and associated pores in highly mature gas shales from the lower Silurian Longmaxi Formation in the upper Yangtze platform of south China were investigated using field emission scanning electron microscopy (SEM), focused ion beam SEM, and lowpressure gas (N-2 and CO2) adsorption bulk pore characterization. The Longmaxi shale comprises fine-grained siliciclastic rocks deposited in a marine shelf environment, which was dominated by quartz and clayminerals. Four porousOMtypes were found in the Longmaxi shale on the basis of the chemical composition and spatial occurrence of OM, including (1) isolated original OM particles, (2) OM-clay mineral complexes, (3) OM-heavy mineral complexes, and (4) secondarymigrated bituminousOM. The pores in the particulate OM are not homogeneously distributed, and the processes leading to different pores depend on the specific OM type. The nature of OM-hosted pores is a result of several factors, such as primary porous kerogen, mechanical compaction, organic-inorganic interactions, gaseous and liquid hydrocarbon generation, retention, and expulsion. Pore volumes and specific surface areas of the Longmaxi shale derived fromlow-pressure N-2 and CO2 adsorption experiments reveal positive linear relationships with total organic carbon contents, which indicates that the pore systems in the highly mature Longmaxi shale are dominated by OM-hosted pores. Additionally, the OM-hosted pores appear connected compared to pores in the mineral matrix. Therefore, the OM-hosted pore systems offer the preferential storage space and primary migration pathways for natural gas in the Longmaxi shale reservoir. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000503033000005 |
WOS关键词 | SICHUAN BASIN ; THERMAL MATURITY ; GEOLOGICAL CONTROLS ; SIZE DISTRIBUTIONS ; UPPER ORDOVICIAN ; BARNETT SHALE ; BLACK SHALES ; OIL CRACKING ; ADSORPTION ; INSIGHTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/224022 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.China Univ Petr, Sch Geosci, Qingdao, Shandong, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Shandong, Peoples R China; 3.German Res Ctr Geosci GFV, Helmholtz Ctr Potsdam, Sect Organ Geochem 43, Potsdam, Germany; 4.PetroChina, Res Inst Petr Explorat & Dev, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Ji, Wenming,Hao, Fang,Schulz, Hans-Martin,et al. The architecture of organic matter and its pores in highly mature gas shales of the lower Silurian Longmaxi Formation in the upper Yangtze platform, south China[J]. AAPG BULLETIN,2019,103(12):2909-2942. |
APA | Ji, Wenming,Hao, Fang,Schulz, Hans-Martin,Song, Yan,&Tian, Jinqiang.(2019).The architecture of organic matter and its pores in highly mature gas shales of the lower Silurian Longmaxi Formation in the upper Yangtze platform, south China.AAPG BULLETIN,103(12),2909-2942. |
MLA | Ji, Wenming,et al."The architecture of organic matter and its pores in highly mature gas shales of the lower Silurian Longmaxi Formation in the upper Yangtze platform, south China".AAPG BULLETIN 103.12(2019):2909-2942. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论