摘要
准噶尔盆地车拐地区长期处于三大生烃凹陷油气运移的有利指向区。该区断裂及圈闭发育,具有多源、多期的油气成藏特征。通过对该区油源研究,发现车拐地区油气源分布具有明显的规律性。搞清了车拐地区各区带在不同时期的石油运聚特征。红车断裂自海西运动末期就开始发育活动,到燕山运动中晚期才停止活动,对早期(早中侏罗世之前)成藏起到破坏作用,对后期(早白垩世末)油气成藏起到封闭作用。车排子隆起区白垩系、石炭系勘探风险较大,但红车断裂带南段及下盘斜坡区、沙门子鼻凸侏罗系勘探前景较好。
Che-Guai area in Junggar basin is long-term in favorable directional zone of hydrocarbon migration in three major source sags. The well developed faults and traps in this area are characterized by multi-source and multi-stage hydrocarbon accumulations. The oil source study shows that there exists obvious regularity for source rock distribution. This paper presents the characteristics of petroleum migration and accumulation in different stages in each zone of Che-Guai area as follows: Hong-Che faulting is originally activated in late Hercynian movement and ceased till middle and late Yanshan movement, which plays destructive roles in early petroleum accumulation (before Early-Middle Jurassic) and sealing roles in late petroleum accumulation (at end of Early Cretaceous). It is concluded that bright prospects appear to be in the south section of Hong-Che fault belt and its slope of the lower wall as well as Shamenzi nose structure of Jurassic system, except for high risks for exploration of Cretaceous and Carboniferous in Chepaizi uplift area.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2005年第1期36-38,共3页
Xinjiang Petroleum Geology
