摘要
After the decade production in the old onshore oil field, it is urgent to find the replace resources as the key to sustainable development. In this paper, Banqiao sag as a case, the authors set up the sand controlled model for the border fault compose styles by means of comprehensive investigation of structure-stratigraphy-sand contrained by sequence framework, and then identify the lithologic trap. Based on source rock and deep reservoir condition, the authors consider that the deep petroleum accumulation conditions in the Banqiao sag would be beneficial to find the lithologic oil and gas reservoir.