天然气水合物分布及青藏高原有利勘探区  

Global Natural Gas Hydrate Distribution and Favorable Exploration Zones in Qinghai-Tibet Plateau

作　　者：郭祖军[1] 陈志勇[1] 胡素云[1] 李永铁[1] 吴培红[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《新疆石油地质》2012年第3期266-271,共6页Xinjiang Petroleum Geology

摘　　要：天然气水合物是由天然气与水分子在高压、低温条件下形成的固态结晶物质,全球资源约为2×1016m3,分布于海域和陆上冻土区;冻土区发现于加拿大马更些三角洲、美国阿拉斯加北坡、俄罗斯西伯利亚以及中国青藏高原等地。羌塘盆地是中国陆上天然气水合物发育的最有利地区,结合天然气水合物形成的冻土条件以及生烃条件,推测北羌塘坳陷西部(东经88°30′以西)和南羌塘坳陷东部(土门地区)是天然气水合物形成的有利地区,并针对目前存在问题,提出了勘探建议。Natural gas hydrate is a solid crystalline substance formed by water and gas under conditions of high pressure and low tempera- ture. The resources in the world amount to about 2× 10^16 m^3 and distribute in the ocean sediments and permafrost regions which are found in Makenzie delta in Canada, north siope of Alaska in America, Siberia in Russia and Qinghai-Tibet plateau in China. And Qiangtang basin is the most favorable area with subaerial hydrates. It is speculated according to the permafrost and hydrocarbon-generating conditions that the most favorable areas with natural gas hydrates are located in the western North Qiangtang depression and the eastern South Qiangtang depression. Also, in view of the present issues, the related exploration suggestions are proposed in this paper.

关 键 词：青藏高原 羌塘盆地 冻土区 天然气水合物 

分 类 号：TE112.11[石油与天然气工程—油气勘探]