Based on the understanding of geological conditions of petroleum systems in Shahejie Formation of Chengbei fault step zone

Bohaiwan basin

the evolution of the basin

hydrocarbon maturity

and dynamic conditions for hydrocarbon migration are successfully reconstructed through basin modeling

some physical properties such as the porosity and permeability of different pathway systems in the area are studied

and the connectivity of faults and sandstone carriers are quantified by the opening probability and net-to-gross ratio respectively.Hydrocarbon migration and accumulation modeling methods based on the percolation theory are used to realize the coupling of migration dynamics and pathways in the two-dimensional carrier framework model built on real data.The results reveal the hydrocarbon migration path and its relative flow rates in the target intervals of the Shahejie Formation.These study results

in combination with other geological conditions

are successfully used in identifying the prospective target zones

including eastern Zhangdong structural belt

the Zhangdong structural belt

and area around the Well Zhuanghai-12 and Well Zhuanghai-9x3.