On the basis of trilobita, brachiopoda and conodont fossiles obtained from downhole, this paper studied downhole Cambrian - Ordovician section of Well Kunan 1. It is considered Cambrian - Ordovician and every formation of Cambrian as successive sediments.

• 根据井下所采集的三叶虫、腕足类及牙形石化石；对库南1井井下寒武一奥陶系剖面进行了研究.；认为；奥陶系与寒武系为连续沉积；寒武系各组之间亦为连续沉积