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柴达木盆地的中、新生界可划分出侏罗系、第三系和第四系三大含油气系统。其中侏罗系含油气系统的油气资源各占一半,第三系是以含油为主的含油气系统,第四系是以含气为主的含油气系统。并对这三大含油气系统的形成及演化进行了分析。根据烃源岩及其生成油气的分布,划分出各含油气系统的分布范围:侏罗系含油气系统分布在盆地北部,以北缘块断带为主的东西向展布的条带,向南可延至碱山、鸭湖、盐湖;第三系含油气系统以盆地西部———茫崖坳陷为主,向东可延至一里沟、红三旱四号、船形丘及黄石构造一带;而第四系含油气系统以盆地中-东部的三湖坳陷为主。
In the Qaidam Basin, the Mesozoic and Cenozoic strata can be divided into three major oil and gas systems of the Jurassic, Tertiary and Quaternary. Among them, the oil and gas resources in the Jurassic petroleum system account for half each. The Tertiary is an oil-bearing petroleum system. The Quaternary system is a gas-bearing petroleum system. The formation and evolution of these three major oil and gas systems are also analyzed. According to the distribution of hydrocarbon source rocks and their hydrocarbon generation, the distribution range of each petroleum system is divided: the Jurassic petroleum system is distributed in the north of the basin and the east-west distribution belt is mainly of the north margin block, The south can be extended to soda ash, duck lake and salt lake. The Tertiary petroliferous system is dominated by the Mangya depression in the west of the basin and extends east to Yiliougou, Hongsan-4, hull-shaped hill and Huangshi structure While the Quaternary petroleum system is dominated by the Sanhu depression in the middle and eastern part of the basin.