The control of Moho uplift over the distribution of the oil-gas-rich sag belt in the Beibu Gulf Basin
文献类型：期刊论文
| 作者 | Wang, Lin1; Chen, Ying3,4; Wang, Wanyin1,2,4; Bai, Zhizhao3,4 |
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 44期号:6页码:110-125 |
| 关键词 | Beibu Gulf Basin crustal thickness stretching factor entropy weight method oil-gas-rich sag belt |
| ISSN号 | 0253-505X |
| DOI | 10.1007/s13131-025-2481-5 |
| 通讯作者 | Chen, Ying(chenying2@cnooc.com.cn) ; Wang, Wanyin(wwy7902@chd.edu.cn) |
| 英文摘要 | The Beibu Gulf Basin is an important oil- and gas-bearing basin offshore the China Sea, but the geological reserves of oil and gas are not very high, and there are significant differences between different sags. Previous studies have shown that the formation and accumulation of oil and gas are closely related to deep structures, especially the crustal thickness or the relative undulation characteristics between the Moho and basement, but there is a lack of specific evaluation and quantitative standards. In this paper, we first invert the depth of the Moho in the Beibu Gulf Basin using satellite gravity anomalies and calculate the crustal thickness value based on this. Then, we count and analyze the crustal thickness value as well as the stretching factor that characterizes the crustal extension and thinning degree, and find that the NWW-trending contour closure of the 28 km Moho depth or 26 km crustal thickness corresponds significantly to the Weixinan-Fushan sag belt, which has already been proven to have considerable oil and gas discoveries, with a typical feature of crustal thinning to 22 km and the stretching factor reaching 1.1. Finally, we propose a comprehensive evaluation scheme based on the entropy weight method to normalize and evaluate the statistical features of the crust, and take a comprehensive score of S-i > 0.5 as an evaluation indicator for an oil-gas-rich sag. Based on this research, we believe that the Haizhong sag has considerable exploratory potential, followed by the Maichen sag, while the Leidong and Haitoubei sags have relatively smaller exploratory potential. The research results will help strategic decision-making of the oil and gas exploration in the Beibu Gulf Basin and provide new perspectives for studying the relationship between deep structures and the differential distribution of oil-gas-rich sags. |
| WOS关键词 | SOUTH CHINA SEA ; CRUSTAL THICKNESS ; GRAVITY ; DEPTH ; MARGIN ; MODEL |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001567182100004 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203377]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Chen, Ying; Wang, Wanyin |
| 作者单位 | 1.Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.China Natl Offshore Oil Corp CNOOC Res Inst Co Ltd, Beijing 100027, Peoples R China 4.Natl Engn Res Ctr Offshore Oil & Gas Explorat, Beijing 100028, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lin,Chen, Ying,Wang, Wanyin,et al. The control of Moho uplift over the distribution of the oil-gas-rich sag belt in the Beibu Gulf Basin[J]. ACTA OCEANOLOGICA SINICA,2025,44(6):110-125. |
| APA | Wang, Lin,Chen, Ying,Wang, Wanyin,&Bai, Zhizhao.(2025).The control of Moho uplift over the distribution of the oil-gas-rich sag belt in the Beibu Gulf Basin.ACTA OCEANOLOGICA SINICA,44(6),110-125. |
| MLA | Wang, Lin,et al."The control of Moho uplift over the distribution of the oil-gas-rich sag belt in the Beibu Gulf Basin".ACTA OCEANOLOGICA SINICA 44.6(2025):110-125. |
入库方式： OAI收割
来源：海洋研究所
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