天然气地球科学 ›› 2009, Vol. 20 ›› Issue (2): 237–243.doi: 10.11764/j.issn.1672-1926.2009.02.237

• 天然气水合物 • 上一篇    下一篇

天然气水合物成因类型及成矿特征与南海北部资源前景

何家雄 祝有海 陈胜红 崔莎莎 马文宏   

  1. 1.中国科学院边缘海地质重点实验室,广东 广州 510640;2.中国地质科学院矿产资源研究所,北京 100037;3.中海石油有限公司深圳分公司研究院,广东 广州 510240;4.中海石油有限公司湛江分公司,广东 湛江 524057
  • 收稿日期:2008-05-06 修回日期:2008-12-26 出版日期:2009-04-10 发布日期:2009-04-10
  • 通讯作者: 何家雄hejx@gig.ac.cn E-mail:hejx@gig.ac.cn
  • 基金资助:

    国家重点基础研究发展计划项目(编号:2007CB41170501、2009CB219501)联合资助

Genetic Types and Mineralization Characteristics of Gas Hydrate and Resources Potential of Northern South China Sea

HE Jia-Xiong, ZHU You-Hai, CHEN Sheng-Hong, CUI Sha-Sha, MA Wen-Hong   

  1. 1. Key Laboratory of Marginal Sea Geology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou 510640, China; 2.Institute of Mineral Resources,Chinese Academy of Geological Science,Beijing 100037,China;3. Shenzhen Company, CNOOC, Guangzhou 510240, China; 4. Zhanjiang Company, CNOOC, Zhanjiang 524057, China
  • Received:2008-05-06 Revised:2008-12-26 Online:2009-04-10 Published:2009-04-10

摘要:

世界上迄今勘查发现的天然气水合物成因类型,根据其烃气源构成及供给特点与成矿特征,可划分为自源生物气扩散型、他源热解成熟气渗漏型以及自源生物气—他源热解气混合型3大类,但目前自然界分布比较普遍的是“自源生物气扩散型”水合物,其他类型天然气水合物由于受烃气源供给及输送通道等条件制约,仅限于存在深部烃气源供给输导系统的局部地区。南海北部深水盆地新生代处于准被动大陆边缘的区域地质背景,具有北部拉张裂陷的大陆边缘性质,其凹陷裂陷深、沉积充填规模巨大,不仅有利于深水油气藏的形成,而且亦是天然气水合物形成与分布的有利区域。初步预测表明该区不但深部具有丰富的深水油气,而且浅层深水海底沉积物中天然气水合物资源潜力巨大。

关键词: 水合物成因类型, 水合物资源潜力, 深水油气, 南海北部资源前景

Abstract:

According to the composition of source gas, the delivery features and the characters of mineralization, there are three genetic types of gas hydrate in the world  which are diffusion of local biogenic gas, leakage of migrated thermocatalytic pyrolitic gas, and mixed type of biogenic gas and thermocatalytic gas. The diffusion type of local biogenic gas is the most common, and the others are in local areas of deep source gas systems. The Cenozoic of the deep-water basin in the north of the South China Sea is the passive continent margin which has the continent marginal characteristic of being tensionally rifted. It is favorable for the formation of deep-water reservoirs and gas hydrate. Evaluation shows that the gas hydrate resources are as many as the conventional petroleum resources, that is, there are deep\|water petroleum in the deep area and gas hydrate in the superficial part of the deep-water deposition.

Key words: Gas hydrate origins, Gas hydrate potential, Deep-water petroleum, Northern South China Sea resources.

中图分类号: 

  • TE132.2

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