| The role of fluid migration in the occurrence of shallow gas and gas hydrates in the south of the Pearl River Mouth Basin, South China Sea | |
Yang, Jinxiu1,2,3; Wang, Xiujuan2,3; Jin, Jiapeng2,4; Li, Yuanping5; Li, Jie5 ; Qian, Jin2; Shi, Hesheng5; Zhang, Guangxu2
| |
| 2017-08-01 | |
| 发表期刊 | INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
 |
| 卷号 | 5期号:3页码:SM1-SM11 |
| 文章类型 | Article |
| 摘要 | High-amplitude anomalies (HAAs), bottom-simulating reflectors (BSRs), vertical acoustic blanking features, polygonal faults, and mass transport complexes are observed in high-resolution 3D seismic data from the south of the Pearl River Mouth Basin, South China Sea. We have focused on the role of fluid migration in the occurrence of shallow gas and gas hydrates. HAAs are interpreted to be shallow gas accumulations or gas hydrates, depending on their polarity and the presence of BSRs. Acoustic blanking features are probably caused by the presence of gas chimneys and overlying free gas due to features including chaotic and weak seismic reflections, pull-downs, and long distances of vertical extension. These gas chimneys root into the underlying late Oligocene gas reservoir. There is a close spatial relationship among the gas reservoir, gas chimneys, shallow gas accumulations, and BSRs, suggesting a genetic link. We have developed a schematic model to explain the processes of fluid migration, which supplied gas to the shallow gas accumulations and the gas hydrate system. When the gas reservoir was critically pressured, the focused fluid migration pathways may be formed or be reactivated, and gas was transported vertically along these conduits to the shallow strata. Then, there were two destinies for the migrated gas at shallow depths. One is that gas was trapped below low-permeability seals, such as mudstone or gas hydrates, forming shallow gas accumulations or free gas zones. The other one is that gas entered the gas hydrate stability zone and formed gas hydrates. In addition, this research indicates that the shallow hydrocarbon resource in this area may not be very prolific probably due to limited fluid migration. |
| DOI | 10.1190/INT-2016-0197.1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000409910400033 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/143172 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.China Univ Petr East China, Res Inst Unconvent Oil & Gas & Renewable Energy, Qingdao, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China 4.UCAS, Beijing, Peoples R China 5.China Natl Offshore Oil Corp Ltd, Shenzhen Branch, Guangzhou, Guangdong, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Yang, Jinxiu,Wang, Xiujuan,Jin, Jiapeng,et al. The role of fluid migration in the occurrence of shallow gas and gas hydrates in the south of the Pearl River Mouth Basin, South China Sea[J]. INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION,2017,5(3):SM1-SM11. |
| APA | Yang, Jinxiu.,Wang, Xiujuan.,Jin, Jiapeng.,Li, Yuanping.,Li, Jie.,...&Zhang, Guangxu.(2017).The role of fluid migration in the occurrence of shallow gas and gas hydrates in the south of the Pearl River Mouth Basin, South China Sea.INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION,5(3),SM1-SM11. |
| MLA | Yang, Jinxiu,et al."The role of fluid migration in the occurrence of shallow gas and gas hydrates in the south of the Pearl River Mouth Basin, South China Sea".INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION 5.3(2017):SM1-SM11. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| The role of fluid mi（12500KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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