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。 The Bashishopu reservoir is a lithologic-structural hydrocarbon reservoir that was formed from the Late Carboniferous to the Early Permian, and the distribution of oil and gas is completely controlled by paleostructures. Affected by the tectonic movement in the late Cenozoic, the Bashishupu anticline evolved into a nose-like structure with a westward dip. However, the serious heterogeneity and the non-connectivity of limestone reservoirs led to the formation of the bioclastic limestone section Of the oil and gas are not completely lost. It is a very favorable prospecting area for the Bashishupu anticline, which is still today with huge and unexplored reserves to the east of Group 4 wells.