Quantitative analysis of fracture evolution in fold: Insights from FDEM modelling
文献类型：期刊论文
| 作者 | Wei, Siyu2; Li, Yanyan3; Liu, Gang4; Shang, Yanjun1; Zhou, Zhi2; Li, Kun5 |
| 刊名 | COMPUTERS & GEOSCIENCES
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 159页码:12 |
| 关键词 | Numerical simulation FDEM Buckle fold Fracture development |
| ISSN号 | 0098-3004 |
| DOI | 10.1016/j.cageo.2021.105004 |
| 通讯作者 | Li, Yanyan(liyanyan@bjut.edu.cn) |
| 英文摘要 | Fractures associated with buckle folds play a vital role in hydrocarbon migration and accumulation in reservoirs. However, the prediction of fracture initiation and propagation during buckle folding is technically challenging. In this study, a series of buckle folds with different initial geometries, which represent different deformation stages of folds, are simulated to study the fracturing mechanism during buckling. To obtain a better understanding of the progressive fracturing process, a 2D modelling approach using an improved combined finitediscrete element method (FDEM) is utilized. The influence of fold geometries with significant influence on fracture development are considered, including layer thickness and wavelength. The results show that the development of fractures can be directly observed through the improved FDEM modelling. It is concluded that the development and distribution of major fracture sets are different at various periods during the evolution history of the fold. Tensile fractures initiate more easily in tighter folds, while shear fractures develop more easily in gentle folds. The pressure from the overburden or the constrains of the surrounding rock is critical for the developments of fractures at hinges. As the fold becomes tight, the density of fractures decreases, whereas the length of single fractures increases. The results further show that the layer thickness and wavelength are vital for the initiation and propagation of major fracture sets. In summary, the FDEM modelling approach can well explain most of the fracture sets occurring in the buckle fold. This study has provided a deeper insight into the fracture evolution in fold. |
| WOS关键词 | DISCRETE ELEMENT METHOD ; THRUST BELT ; FAULT-PROPAGATION ; SINGLE-LAYER ; BASIN ; DEFORMATION ; INITIATION ; ANTICLINE ; PATTERNS ; STRESS |
| 资助项目 | National Natural Science Foundation of China (NSFC)[42077258] |
| WOS研究方向 | Computer Science ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000723239900005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/168087]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Yanyan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.China Geol Survey, Oil & Gas Survey, Beijing 100083, Peoples R China 3.Beijing Univ Technol, Fac Urban Construct, Beijing 100124, Peoples R China 4.Xian Ctr China Geol Survey, MNR, Key Lab Geohazards Loess Area, Xian 710054, Shaanxi, Peoples R China 5.Chinese Acad Sci & Minist Water Resources, Gen Inst Water Resources & Hydropower Planning &, Beijing 100120, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Siyu,Li, Yanyan,Liu, Gang,et al. Quantitative analysis of fracture evolution in fold: Insights from FDEM modelling[J]. COMPUTERS & GEOSCIENCES,2022,159:12. |
| APA | Wei, Siyu,Li, Yanyan,Liu, Gang,Shang, Yanjun,Zhou, Zhi,&Li, Kun.(2022).Quantitative analysis of fracture evolution in fold: Insights from FDEM modelling.COMPUTERS & GEOSCIENCES,159,12. |
| MLA | Wei, Siyu,et al."Quantitative analysis of fracture evolution in fold: Insights from FDEM modelling".COMPUTERS & GEOSCIENCES 159(2022):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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