【摘要】 四川盆地自1964年在威远构造威基井于上震旦统灯影组储层钻获世界上最古老气田之一的威远气田以来,经历了近半个世纪的勘探,到目前尚无明显突破。通过对现有资料进行全面研究后,认为四川盆地晚震旦世灯影期早期发育台地碳酸盐潮坪相、台地湖向上变为碳酸盐潮坪相、台地碳酸盐浅缓坡相、台地碳酸盐浅缓坡夹湖相和台地碳酸盐深缓坡相等5种沉积相;该盆地于加里东期末,便形成了雅安—龙女寺、泸州、天井山和开江等4个继承性古隆起,是油气聚集的良好场所,而且钻探深度也为当今钻井技术所能钻及,为进一步勘探的有利地区。而开江古隆起,由于已钻深井少,灯影组储层是否有隆起,尚有待于地震工作证实。更多还原

【Abstract】 Since Zhenyuan gas field,one of the first gas fields in the world,was drilled successfully in Sinian Dengying Formation of Weiji well in Weiyuan structure in 1964,no significant breakthrough has been made in Sichuan Basin after nearly 50 years? exploration.Five types of sedimentary facies developed in early Dengying Formation of Late Sinian of the basin,i.e.the carbonate tidal flat facies of platform,the carbonate tidal-flat facies on top of the platform lagoon,the carbonate shallow ramp facies of platform,the carbonate shallow ramp facies held by lagoon facies of platform,and the carbonate deep-shallow ramp facies of platform.Through comprehensive study on available data,four successive paleohighs including Yaan-Longnvsi paleohigh,Luzhou paleohigh,Tianjingshan paleohigh,and Kaijiang paleohigh had been formed as early as the Caledonian end of the basin,and they are favorable for oil and gas accumulation.Also the drill depth could be fulfilled by use of current drilling technologies.But in Kaijiang paleohigh,with less drilled wells,whether there are uplifts in Dengying Formation needs to be proved through seismic work.更多还原