Abstract: Guangbei area,one part of Bamianhe oilfield,is a complicated fault block oilfeild,in Paleogene,the tectonism was some strong and some synsedimentary faults dominated the depositional topographer of the area,the third member of Shahejie Formation widely developed delta sedimentation system,which be-come one of the primary oil formations. Now the oilfield is entering into exploitation later stage and needing exploit remnant oil-gas,and the distributing of remnant oil is very close to sedimentary characters of each reservoir,therefore,there is significant practical importance to analyze the relation between sedimentary microfacies and remnant oil distributing .