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.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2012年第3期263-265,共3页
Xinjiang Petroleum Geology
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
mid-crust
low-velocity and highly conductive layer
gypsum salt
dolomite
reef
Qiangtang basin
petroliferous prospect
