Relationship between JX1-1 Inversion Tectonics and Hydrocarbon Accumulation of the Northern Offshore Bohai Bay Basin

Based on the high-resolution 3-D seismic profiles and combined with coherent technology and other advanced seismic data processing as well its interpretation techniques,we discussed and studied the deformation characteristics of the inversion in the JX1-1 area,and analyzed the relationship between JX1-1 inversion tectonics and hydrocarbon accumulation in Liaodongwan offshore of Bohai Bay basin.There are numerous faults of varying scales in JX1-1 area,and the NE-trending faults are predominant.Too large inversion is not favorable for the shallow hydrocarbon accumulation in Neogene.The Tan-Lu fault's transition and turning parts of the Paleogene inversion tectonics zone are the favorable objectives for oil and gas exploration in the offshore Bohai Bay basin.JX1-1 region in the Tan-Lu strike-slip fault stresses under the effect of reversal,during the late sedimentary periods of the Paleogene Shahejie Formation,forming a good anticline structure.In the Paleogene Dongying Formation deposition period,it continued to uplift,until the late Paleogene and early Neogene inversion structures have been formed.The JX1-1 inversion tectonics had also significant influences on the formation of the structural traps,spatial distribution of sedimentary systems and hydrocarbon migration,as well as improvement on reservoir properties.