摘要
阿尔金山前带构造复杂,一直是油气勘探的瓶颈。通过对多个构造要素的分析,基本明确山前带以T2为界,分为上下两个构造层,其中下构造层构成今后油气勘探的主要目的层。文中总结了山前构造对油气的控制作用①北西向断裂控制了生油坳陷的分布范围,生烃中心控制了油气总体分布格局;②近东西向断裂控制了山前鼻状构造的发育,构成山前重要的油气聚集带;③阿尔金南缘断裂与近东西向断裂一起控制了山前侏罗系的分布,为侏罗系油气勘探与研究提供了可靠线索;④喜山晚期构造运动对油气藏有明显的破坏或改造作用,油气主要富集于影响较弱的地区;⑤圈闭带的分布控制着油气藏的具体分布。
Complicated structure of Aerjin foothill belt has always been the bottleneck of oil/gas exploration. By analyzing of several structure elements, it is basically determined both up and down structural layers with T_2 as the boundary are divided in the foothill belt. The down structural layer is the major target of oil/gas exploration in the future. It is summed up the controlling effect of the foothill structure on oil and gas: ①the northwest fault controls the distribution of the oil-generative sags and the hydrocarbon-generative center controls the general oil/gas distribution frame; ②the approximate east-west fault controls the development of foothill nose, which forms the major oil/gas accumulation belt of the foothill; ③the south margin fault of Aerjin mountain and the approximate east-west fault both control the Jurassic distribution, which provide reliable clue for exploration and research of Jurassic oil and gas; ④the late Himalayan movement produces obviously breaking and reforming effect on reservoirs, which make oil and gas accumulating mainly in the zones where the effect is weak; ⑤the distribution of the trap belt controls the concrete distribution of reservoirs.
出处
《天然气勘探与开发》
2005年第3期26-29,共4页
Natural Gas Exploration and Development
