南海琼东南深水海区地质灾害类型与特征

Types and characteristics of deepwater geologic hazard in Qiongdongnan of the South China Sea

杨文达 张异彪 李斌

Yang Wenda Zhang Yibiao Li Bin

中国石化集团上海海洋石油局第一海洋地质调查大队, 上海 201208

No.1 Marine Geological Party, Shanghai Offshore Petroleum Bureau, SINOPEC, Shanghai 201208

南海琼东南深水海区是南中国海石油天然气资源潜在储量较为丰富的地区,油气勘探开发的力度正日益加大。但是,该海区处于南海大陆坡与西沙海槽区域,海底水深大,地形变化剧烈,水体动力环境和海底地质条件复杂,引发地质灾害的触发机制丰富,稍有疏忽,将给石油钻井平台带来巨大损失。在收集有关资料的基础上,对海底的地质环境条件作了研究,发现了一些有可能发生或潜在的地质灾害类型,并对其特征作了描述,以引起有关方面在石油钻井钻前井场工程地质调查和评价时予以重视。

Qiongdongnan deepwater area of the South China Sea has mo re abundant potential reserves of oil and gas, and the exploration and development are growing.However, the deepwater area is located between the continental slope and the Xisha Trough characterized by drama tic topography, and complex hydrodynamic and seabed geology, so there are many trigger mechanism of geohazard. If neglected the potential geohazards, that could bring huge losses for oil drilling platform.The seabed geological conditions are studied based on the collecting information and some types of potential geohazard have been found, and the types and characteristics of deepwater geohazard should be paid attention to are described in this paper.

https://doi.org/10.3969/j.issn.1008-2336.2011.01.001