The Bodong low salient is located in the central-north part offshore Bohai bay.It is a narrow N-E trending strip appearing as a horst with two faults sandwiching an uplift on the E-W section.Three sets of fault systems shape the salient into a complex structure with the deep layer being segmented in E-W direction and shallow layers being zoned in N-S direction.The salient experienced three evolution stages: the forming period

the strike-slip structure development period

and the neotectonics period.The unique geographical position of the salient played a determinant role in forming reservoirs with favorable pooling conditions.It has three hydrocarbon kitchens

three sets of reservoirs

three kinds of carrier system

and three types of traps as well as good seals

all of which provide favorable conditions for hydrocarbon pooling.