羌塘盆地深部地壳构造及油气前景  

Deep Crustal Structure and Petroliferous Prospect in Qiangtang Basin

作　　者：张景廉[1] 罗建玲[2] 郑希民[1] 赵玉梅[2] 

机构地区：[1]中国石油勘探开发研究院西北分院,兰州730020 [2]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《新疆石油地质》2012年第3期263-265,共3页Xinjiang Petroleum Geology

摘　　要：羌塘盆地深部地壳的地球物理特征表明,中地壳存在低速高导层,已被重力勘探所证实。盆地广泛发育岩浆活动,有巨厚的膏盐层和白云岩,显示了羌塘盆地深部的地幔流体热液活动。地幔流体(H2、CO、CO2、CH4)在中地壳的低速高导层可进行费托合成烃的化学反应,盆地油气资源潜力巨大。未来油气勘探的目标应是侏罗系的生物礁,以白云岩为储集层,膏盐岩为盖层,同时注意深部古生界的油气藏。Qiangtang basin is characterized by low velocity and highly conductive layers existed in the mid-crust, which is confirmed by the gravitational prospecting, and by well-developed magmatic hydrothermalism, thick gypsum-salts and dolomites, indicating that the-mantle fluids such as H2, CO, C02 and CH4 can produce chemical reactions of Fischer Tropsch synthetic hydrocarbons in low-velocity and highly conductive layers of the mid-crust. It is concluded that this basin has giant petroleum resources, and the future petroleum prospecting tar- gets should be the Jurassic reefs, where the dolomites are the reservoirs, gypsum-salts are the cap rocks. Meanwhile, the deep Paleozoic res- ervoirs in this area are also paid more attention to.

关 键 词：羌塘盆地 中地壳 低速高导层 膏盐 白云岩 生物礁 油气前景 

分 类 号：TE111.1[石油与天然气工程—油气勘探]