Dynamic reservoiring process of hydrocarbon in Niu-35 and Ying-11 sandbodies in Dongying depression have been studied by using homogenization temperature of fluid inclusion

in combination with burial history and palaeogeothermal data. This paper systematically analyzes the evolution of source rocks

porosity and permeability evolution of sandsbodies

the time of hydrocarbons charging into the sandbodies

and the time of overpressure being formed on the basis of dynamic modeling of burial

thermal and hydrocarbon-charging histories. Based on comprehensive analysis

it is believed that a palaeotemperature of 90℃ and a palaeopressure of 17 MPa are favorable for the formation of lithologic reservoirs. Charging of large amount of hydrocarbons during-after reservoiring can lead to overpressured formations. sandbodies located in various reservoiring systems would have different fill factors and pressure coefficients. When sources of hydrocarbons are abundant

lenticular lithologic reservoirs with high fill factor and large pressure coefficient can be formed in deep and closed reservoiring systems

while lithologic reservoirs with moderate fill factor and relatively high pressure coefficient can be formed in half-open reservoiring systems.