| 神狐钻探区天然气水合物成藏地质条件分析 |
| |
| 引用本文： | 梁永兴,曾溅辉,郭依群,匡增桂.神狐钻探区天然气水合物成藏地质条件分析[J].现代地质,2013,27(2). |
| |
| 作者姓名： | 梁永兴 曾溅辉 郭依群 匡增桂 |
| |
| 作者单位： | 1. 中国石油大学油气资源与探测国家重点实验室,北京 102249;中国石油大学地球科学学院,北京102249
2. 广州海洋地质调查局海洋矿产地质调查所,广东广州,510760 |
| |
| 基金项目： | 国土资源部天然气水合物科技项目 |
| |
| 摘 要： | 以天然气水合物成藏系统理论为指导,对神狐钻探区天然气水合物成藏地质条件进行了系统研究。研究结果表明:神狐钻探区具有优越的烃类生成体系和流体运移体系。天然气水合物气源以生物气-热成因气混合气为主,气源岩生烃潜力大;断层、气烟囱以及断层滑脱面可以为含烃流体在纵向和横向上的运移提供优势运移通道。地温特征和成藏就位体系-沉积物岩性及其岩性组合特征是控制该区水合物层在空间尺度上分布不均匀的主要原因,地温和地温梯度越低,沉积物粒度越粗,且具备"上细下粗"的沉积物岩性组合更有利于水合物的形成。
|
| 关 键 词： | 天然气水合物 成藏系统 成藏就位体系 神狐钻探区 |
Analysis of Natural Gas Hydrate Accumulation Conditions of Shenhu Prospect |
| |
| LIANG Yong-xing
,
ZENG Jian-hui
,
GUO Yi-qun
,
KUANG Zeng-gui.Analysis of Natural Gas Hydrate Accumulation Conditions of Shenhu Prospect[J].Geoscience——Journal of Graduate School,China University of Geosciences,2013,27(2). |
| |
| Authors: | LIANG Yong-xing ZENG Jian-hui GUO Yi-qun KUANG Zeng-gui |
| |
| Abstract: | Based on the theory of gas hydrate geological system,gas hydrate accumulation conditions of Shenhu prospect are studied.The results indicate that there are excellent gaseous hydrocarbon source sub-system and gas-bearing fluid migration sub-system.The gas hydrate in this area is proved to be a mixture of biogenic gas and thermogenic gas and the hydrocarbon potential of the source rock is high;faults,gas chimneys,and detachment surface constitute the dominant migration pathway for the hydrocarbon to migrate horizontally and vertically.Geothermal characteristic and gas hydrate reservoir accumulation sub-system(characteristics of lithology and lithological assemblage) are the main reason why gas hydrate is distributed heterogeneously in all spatial scales in the study area.The lower the temperature of the earth and the geothermal gradient,the coarser the sediment grain is.In addition,the fine-above-coarse-below lithological assemblage is more beneficial for the gas hydrate to accumulate. |
| |
| Keywords: | natural gas hydrate geological system reservoir accumulation sub-system Shenhu prospect |
| 本文献已被 万方数据 等数据库收录！ |
|
