巴什托普石炭系油气藏成藏规律

巴什托普油气藏为一岩性－构造油气藏，该油气藏于晚石炭世－早二叠世成藏，油气分布完全受古构造控制。受新生代晚期构造运动的影响，巴什托普古背斜演变成一向西倾伏的鼻状构造，但灰岩储集层严重的非均质性及不连通性，使得生屑灰岩段的油气并未完全散失，在巴什托普古背斜，即现今群４井以东地区仍有巨大未探明的储量，是一非常有利的勘探区域。

RESERVOIR FORMING REGULARITY IN CARBONIFEROUS IN BASHITUOPU ANTICLINE

Bashituopu litho structural reservoir formed in Late Carboniferous-Early Permian, in which hydrocarbon distribution was completely controlled by paleostructure. Owing to tectonic movement in Late Cenozoic, Bashituopu paleoanticline evolved into a nose like structure dipping west, but oil and gas in bioclastic limistone didn't completely lose because of severe heterogeneity and uncommunication in limistone reservoir. Bashituopu paleoanticline, to the east of Well Qun 4, still contains large amount of unproved reserves. It is a very favourable exploration area.