There are several methods of stratigraphic division and correlation

but they have their own systems

virtues and shortages.Through the research of chronostratigraphy

sequence stratigraphy

high-resolution straigraphy and architectural element analysis

combined with the character of hierarchy of stratigraphy

this paper expected to establish the rule and method of oil and gas reservoir hierarchy division

hierarchy description

hierarchy interpretation and hierarchy correlation from global scale to reservoir scale.