Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Gas-bearing fluid influx sub-system for gas hydrate geological system in Shenhu Area, Northern South China Sea | |
| Alternative Title | 南海北部陆坡神狐海域天然气水合物成藏的流体运移体系 |
| Wu Neng-You1,2,3; Yang Sheng-Xiong3; Wang Hong-Bin3; Liang Jin-Qiang3; Gong Yue-Hua3; Lu Zhen-Quan4; Wu Dai-Dai1,2; Guan Hong-Xiang1,2 | |
| 2009-06-01 | |
| Source Publication | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| ISSN | 0001-5733 |
| Volume | 52Issue:6Pages:1641-1650 |
| Corresponding Author | wuny@ms.giec.ac.cn |
| Abstract | Based on the comprehensive interpretation and study of the Neogene fracture system and diapiric structure, it can be concluded that the diapiric structures, high-angle fractures and vertical fissure system are the main gas-bearing fluid influx sub-system for gas hydrate geological system in Shenhu Area, northern South China Sea. The Neogene fractures widely developed in the study area may be classed into two groups: NW (NNW)-trending and NE (NNE)-trending. The first group was active in the Late Miocene, while the second one was active since the Pliocene. The NE (NNE)-trending fractures were characterized by lower activity strength and larger scale, and cut through the sediment layers deposited since the Pliocene. Within the top sediment layers, the high-angle fracture and vertical fissure system was developed. The diapiric structures display various types such as a turtle-back-like arch, weak piercing, gas chimney, and fracture (or crack, fissure). On the seismic profile, some diapiric structures show the vertical chimney pathway whose top is narrow and the bottom is wide, where some ones extend horizontally into pocket or flower-shaped structures and formed the seismic reflection chaotic zones. Within the overlying sediment layers of the diapiric structure, the tree branch, flower-shaped high-angle fractures and vertical fissures were developed and became the pathway and migration system of the gas-bearing fluid influx. In the study area, the diapiric structures indicate a high temperature/over pressure system ever developed. Closely associated and abundant bright-spots show the methane-bearing fluid influx migrated vertically or horizontally through the diapiric structures, high-angle fractures and vertical fissures. In the place where the temperature and pressure conditions were favor for the formation of gas hydrate, the hydrate reservoir deposition sub-system was developed. |
| Subtype | Article |
| Other Abstract | Based on the comprehensive interpretation and study of the Neogene fracture system and diapiric structure, it can be concluded that the diapiric structures, high-angle fractures and vertical fissure system are the main gas-bearing fluid influx sub-system for gas hydrate geological system in Shenhu Area, northern South China Sea. The Neogene fractures widely developed in the study area may be classed into two groups: NW (NNW)-trending and NE (NNE)-trending. The first group was active in the Late Miocene, while the second one was active since the Pliocene. The NE (NNE)-trending fractures were characterized by lower activity strength and larger scale, and cut through the sediment layers deposited since the Pliocene. Within the top sediment layers, the high-angle fracture and vertical fissure system was developed. The diapiric structures display various types such as a turtle-back-like arch, weak piercing, gas chimney, and fracture (or crack, fissure). On the seismic profile, some diapiric structures show the vertical chimney pathway whose top is narrow and the bottom is wide, where some ones extend horizontally into pocket or flower-shaped structures and formed the seismic reflection chaotic zones. Within the overlying sediment layers of the diapiric structure, the tree branch, flower-shaped high-angle fractures and vertical fissures were developed and became the pathway and migration system of the gas-bearing fluid influx. In the study area, the diapiric structures indicate a high temperature/over pressure system ever developed. Closely associated and abundant bright-spots show the methane-bearing fluid influx migrated vertically or horizontally through the diapiric structures, high-angle fractures and vertical fissures. In the place where the temperature and pressure conditions were favor for the formation of gas hydrate, the hydrate reservoir deposition sub-system was developed. |
| Keyword | Gas Hydrate Gas-bearing Fluid Influx System Fracture Diapiric Structure Shenhu Area South China Sea |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.3969/j.issn.0001-5733.2009.06.027 |
| WOS Subject Extended | Geochemistry & Geophysics |
| URL | 查看原文 |
| WOS Keyword | SOUTHWESTERN TAIWAN ; CONTINENTAL-MARGIN ; METHANE HYDRATE ; SEEP CARBONATES ; RIDGE REGION ; BLAKE RIDGE ; PORE WATERS ; HEAT-FLOW ; OFFSHORE ; SEDIMENTS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | 中国科学院知识创新工程重要方向项目(KGCX2YW805);国家重点基础研究计划973 (2009CB219506);中国地质调查局专项配套项目(GZH200200203) |
| WOS Subject | Geochemistry & Geophysics |
| WOS ID | WOS:000267619800027 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/3320 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.CAS, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 2.CAS, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 3.Guangzhou Marine Geol Survey, Guangzhou 510075, Guangdong, Peoples R China 4.CAGS, Inst Mineral Resources, Beijing 100037, Peoples R China |
| Recommended Citation GB/T 7714 | Wu Neng-You,Yang Sheng-Xiong,Wang Hong-Bin,et al. Gas-bearing fluid influx sub-system for gas hydrate geological system in Shenhu Area, Northern South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(6):1641-1650. |
| APA | Wu Neng-You.,Yang Sheng-Xiong.,Wang Hong-Bin.,Liang Jin-Qiang.,Gong Yue-Hua.,...&Guan Hong-Xiang.(2009).Gas-bearing fluid influx sub-system for gas hydrate geological system in Shenhu Area, Northern South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(6),1641-1650. |
| MLA | Wu Neng-You,et al."Gas-bearing fluid influx sub-system for gas hydrate geological system in Shenhu Area, Northern South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.6(2009):1641-1650. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| 南海北部陆坡神狐海域天然气水合物成藏的流（3464KB） | 开放获取 | -- | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment