Nanopore structure characteristics and evolution of type III kerogen in marine-continental transitional shales from the Qinshui basin, northern China
文献类型：期刊论文
| 作者 | Lu, Chengang2; Xiao, Xianming2; Gai, Haifeng1; Feng, Yue2; Li, Gang2; Meng, Guangming2; Gao, Ping2 |
| 刊名 | GEOENERGY SCIENCE AND ENGINEERING
 |
| 出版日期 | 2023 |
| 卷号 | 221页码:211413 |
| 关键词 | PORE STRUCTURE CHARACTERIZATION MATURATION GRADIENT INSIGHTS NANOMETER-SCALE PORES ORGANIC-MATTER GAS-ADSORPTION SICHUAN BASIN BARNETT SHALE SOUTH CHINA ORDOS BASIN HORN RIVER |
| ISSN号 | 2949-8929 |
| DOI | 10.1016/j.geoen.2022.211413 |
| 英文摘要 | Marine-continental transitional (MCT) shale gas, owing to its great potentials in China, has become a new field of exploration and development following marine shale gas. However, the formation and enrichment mechanism of MCT shale gas is still unclear, especially there is a lack of understanding on the nanopore evolution of organic matter in this type of shale reservoirs. Based on a set of MCT natural shale samples with variable maturities from the Qinshui Basin, northern China, and their isolated kerogen, the characteristics and evolution of organic matter (OM) nanopore in this type of shales were investigated. The results from organic petrological and elemental analysis show that the shales have a Ro range of 1.25–3.90%, and their OM is composed of amorphinite, inertinite and vitrinite, belonging to type III kerogen. Scanning electron microscope observations indicate that interparticle pores related to minerals, especially clay minerals develop well, while organic-hosted pores are underdevelopment. There is no obvious secondary pore in inertinite, and secondary pores occur in vitrinite, but with a low abundance. Low-pressure N2 and CO2 adsorption experiments further reveal that OM in the shales (represented by their kerogen samples) develops micropores, and the contribution of their micropores to their total surface areas and pore volumes can reach averagely 92% and 39%, respectively. Micropores have a main control on the nanopore structure evolution of OM in the shales, and the specific surface areas and pore volumes of micropores and total pores continue to increase with increasing maturity from 1.25% Ro up to 3.90% Ro, without a decline when Ro > 3.0–3.5% as revealed in marine shales The results indicate that the exploration of MCT shale gas in the Qinshui and other basins could be extended to a higher maturity (possibly up to a Ro of 3.9–4.5%). ? 2023 Elsevier B.V. |
| WOS研究方向 | Energy & Fuels ; Engineering, Petroleum |
| 语种 | 英语 |
| WOS记录号 | WOS:000975784200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80260]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China 2.School of Energy Resources, China University of Geosciences (Beijing), Beijing; 100083, China |
| 推荐引用方式 GB/T 7714 | Lu, Chengang,Xiao, Xianming,Gai, Haifeng,et al. Nanopore structure characteristics and evolution of type III kerogen in marine-continental transitional shales from the Qinshui basin, northern China[J]. GEOENERGY SCIENCE AND ENGINEERING,2023,221:211413. |
| APA | Lu, Chengang.,Xiao, Xianming.,Gai, Haifeng.,Feng, Yue.,Li, Gang.,...&Gao, Ping.(2023).Nanopore structure characteristics and evolution of type III kerogen in marine-continental transitional shales from the Qinshui basin, northern China.GEOENERGY SCIENCE AND ENGINEERING,221,211413. |
| MLA | Lu, Chengang,et al."Nanopore structure characteristics and evolution of type III kerogen in marine-continental transitional shales from the Qinshui basin, northern China".GEOENERGY SCIENCE AND ENGINEERING 221(2023):211413. |
入库方式： OAI收割
来源：广州地球化学研究所
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