No.1 of sunken oil formation is the major exploration target section of the oil and gas resources in Jiangling sag.No.1 Oil Formation is one of the major oil reservoir groups.According to the analysis of core observation,we know of integrated lithology,sedimentary structure and well logging in Jingzhou anticline belt and the north of Jiangling Sag.It is concluded that there are 3 sedimentary systems,including 9 subfacies and 15 microfacies.According to the lithology data,the contour map is compiled and combined with the single well to further confirm the plane distribution of the sedimentary facies in this area.It can be concluded that it is the development area of middle-deep lacustrine.Meanwhile,the search for favorable reservoir sandbodies is of guiding significance for the exploration of potential reservoirs in this area.%江陵凹陷油气资源的主要勘探目标段为新下段,新下Ⅰ油组为该段的主要油层组之一.根据江陵凹陷荆州背斜带及以北地区的岩心观察,综合岩性、沉积构造、测井等资料分析认为,新下Ⅰ油组存在3种沉积体系,包括9种沉积亚相和15种沉积微相.根据新下Ⅰ油组的岩性资料编制等值线图,并与单井相相结合可进一步确定该地区沉积相的平面展布,可推断出中深湖相的发育区域;同时有利储集砂体的寻找,对该区探索潜在油藏具有指导意义.
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