Maturity characterization and formation mechanisms of nano-scale anisotropic pyrobitumen based on atomic force microscopy (AFM)
文献类型：期刊论文
| 作者 | Zuo, Zhaoxi1; Cao, Jian2; Hu, Wenxuan2; Zhang, Ruijie2; Wang, Xiaolin2; Yao, Suping2; Luo, Bing3; Zhang, Jingkun4 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 197页码:15 |
| 关键词 | Huiyuan Xu Executive Guest Editor Pyrobitumen Organic matter maturity Nano-mechanics Raman spectroscopy Dengying Formation Sichuan Basin |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104879 |
| 通讯作者 | Cao, Jian(jcao@nju.edu.cn) |
| 英文摘要 | Highly evolved pyrobitumen is an important and realistic object for maturity characterization of ancient and deeply buried organic matter, but measurement of its reflectance is challenging due to its strong optical anisotropy and nano-scale relief. Here we conducted a case study in the Sinian (Ediacaran) Dengying Formation of the Sichuan Basin, China. High-resolution, three-dimensional, morphological imaging by atomic force microscopy (AFM), laser Raman (LRM) spectroscopy, and reflectance studies were conducted on the reservoir pyrobitumen. Our results show that Young's modulus and adhesion, which are mechanical maturity parameter, provides effective characterization of maturity. The increase in Young's modulus of pyrobitumen lags that of the vitrinite, given that pyrobitumen is formed by oil cracking and is more hydrogen-rich than vitrinite. A quantitative relationship between Young's modulus, adhesion and reflectance in bright and dark areas of pyrobitumen was established, which can be used for maturity characterization. The changes in Young's modulus of the pyrobitumen is related to the condensation of organic matter and directional arrangement of microcrystals. Young's modulus of organic matter is a robust mechanical maturity index at high organic matter maturity (R-o > 2.0 %), but it is important to pay attention to the influence of anisotropy. Compared to Young's modulus, adhesion is less affected by anisotropy. The nano-mechanics such as Young's modulus and adhesion will be new maturity indicator in addition to conventional optical and spectroscopic method. The nano-mechanical properties of organic matter are expected to be applied to maturity indicators and macerals classification in the field of organic petrology in the further research. |
| WOS关键词 | ORGANIC-MATTER ; SICHUAN BASIN ; THERMAL MATURITY ; SOLID BITUMEN ; NANOMECHANICAL PROPERTIES ; ELASTIC PROPERTIES ; PALEO-UPLIFT ; GAS ; REFLECTANCE ; ORIGIN |
| 资助项目 | National Natural Science Foundation of China[42230808] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001327502600001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/44395]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Cao, Jian |
| 作者单位 | 1.SINOPEC, Wuxi Inst Petr Geol, SINOPEC Key Lab Petr Accumulat Mech, PEPRIS, Wuxi 214126, Jiangsu, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China 3.PetroChina Southwest Oil & Gas Field Co, Res Inst Petr Explorat & Dev, Chengdu 610051, Sichuan, Peoples R China 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Palaeobiol & Petr Stratig, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zuo, Zhaoxi,Cao, Jian,Hu, Wenxuan,et al. Maturity characterization and formation mechanisms of nano-scale anisotropic pyrobitumen based on atomic force microscopy (AFM)[J]. ORGANIC GEOCHEMISTRY,2024,197:15. |
| APA | Zuo, Zhaoxi.,Cao, Jian.,Hu, Wenxuan.,Zhang, Ruijie.,Wang, Xiaolin.,...&Zhang, Jingkun.(2024).Maturity characterization and formation mechanisms of nano-scale anisotropic pyrobitumen based on atomic force microscopy (AFM).ORGANIC GEOCHEMISTRY,197,15. |
| MLA | Zuo, Zhaoxi,et al."Maturity characterization and formation mechanisms of nano-scale anisotropic pyrobitumen based on atomic force microscopy (AFM)".ORGANIC GEOCHEMISTRY 197(2024):15. |
入库方式： OAI收割
来源：南京地质古生物研究所
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