Abstract:

Based on seismic data and displacement-distance scaling，this paper analyzes the formation of the JX transfer zone in the middle part of the Liaodongwan depression.  The oil-bearing JX structure is a large-scale strike-slip duplex structure where two segmented faults of the Liaozhong-No. 1 strike-slip fault overstep and interact each other.The rhombic faulted block between the two segmented and overstepped faults transferred their displacements，and the conservation of fault displacements formed the JX transfer zone which belongs to the type of oblique anticline.The JX transfer zone experienced four evolution stages，including the isolated faults，transfer zones initiation，complication and rupture.The integrated study on transfer zones has important significance to oil and gas exploration in the offshore part of the Bohai Bay basin.

Key words: transfer zone, displacement conservation, strike-slip fault, JX structure, Liaodongwan depression