Dominating action of Tanlu Fault on hydrocarbon accumulation in eastern Bohai Sea area

The 3D seismic data of Bohai Sea area were used to make 3D visualization interpretation for Tanlu Fault zone.The systemic studies on the development,and geometry,kinematics and dynamics of Tanlu Fault zone in the Paleogene,Neogene and Quaternary of this area since Cenozoic showed that Tanlu Fault zone is an important factor for controlling the hydrocarbon accumulation in Bohai Sea area.i.e.Tanlu Fault zone controlled the formation of lacustrine source rocks in the Eocene and Oligocene during the Paleogene extension rifting period,formed and reconstructed lots of traps,dominated oil and gas conduction system,and the natural earthquake activities during the Neotectonic period could improve hydrocarbon accumulation in this area.The late activity of Tanlu Fault zone advanced hydrocarbon accumulation in the Late Neogene and also advanced the dynamic balance of oilfields at present.