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| 南海神狐海域X区块天然气水合物的控制因素 | |
| 引用本文： | 龚建明,胡学平,王文娟,李刚,杨艳秋,马立杰.南海神狐海域X区块天然气水合物的控制因素[J].现代地质,2009,23(6). |
| 作者姓名： | 龚建明 胡学平 王文娟 李刚 杨艳秋 马立杰 |
| 作者单位： | 1. 青岛海洋地质研究所,海洋油气资源与环境地质重点实验室,山东,青岛,266071 2. 中国石油,东方地球物理公司,河北,涿州,072750 3. 中国科学院,海洋研究所,山东,青岛,266071 |
| 基金项目： | 国家自然科学基金项目，国土资源部海洋油气资源与环境地质重点实验室项目 |
| 摘 要： | 为了探讨南海神狐海域X区块天然气水合物的控制因素,开展了高分辨地震资料精细解释和天然气水合物地震相研究。结果显示,X区块存在3条主控断层和众多滑塌断层;预测的稳定带内水合物呈多层分布,稳定带底部水合物层厚度较大、连续性较好。结合地震反射特征和可能的气源讨论初步认为,X区块天然气水合物的成藏模式主要有两种类型:在断裂或滑塌构造发育区,水合物的气源以热解成因气为主,水合物呈多层分布;在构造平缓地区,水合物的气源以生物成因气为主,水合物呈单层分布,且主要分布在似海底反射(BSR)之上一个狭窄的范围内。 |
| 关 键 词： | 控制因素 成藏模式 水合物 X区块 神狐海域 南海 |
Controlling Factors of Gas Hydrate Occurrences in the X Block of Shenhu Area,South China Sea |
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| GONG Jian-ming,HU Xue-ping,WANG Wen-juan,LI Gang,YANG Yan-qiu,MA Li-jie.Controlling Factors of Gas Hydrate Occurrences in the X Block of Shenhu Area,South China Sea[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(6). | |
| Authors: | GONG Jian-ming HU Xue-ping WANG Wen-juan LI Gang YANG Yan-qiu MA Li-jie |
| Abstract: | In order to understand the main controlling factors of gas hydrate occurrences in the X Block of Shenhu area, South China Sea, the fine seismic explanations and seismic facies studies of gas hydrate were carried out. The results show that there exist three important faults and lots of collapse structures, multilayer hydrate-bearing sediments exist in the gas hydrate stable zone, which have big thickness and good continuity in the base of the gas hydrate stable zone. In combination with seismic reflection features and probable gas resource discussion, it is concluded that there probably exist two kinds of reservoir models in the X Block. In the areas where faults or collapse structures develop, the gas resource is probably composed of thermogenic gas, gas hydrate is characterized by multilayer distribution, while in the inactive areas the gas resource is probably composed of biogenic gas, and gas hydrate is characterized by monolayer, which mainly distributes in a narrow zone on the surface of BSR(bottom-simulating seismic reflector). |
| Keywords: | controlling factor reservoir model gas hydrate X Block Shenhu area South China Sea |
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