SN向伸展构造系统和NNE向右旋走滑构造系统的长期交互作用,控制了渤海海域渤南低凸起西段深浅层(古近系和新近系)构造圈闭的形成:深层圈闭是渐新世走滑断层挤压反转形成,提出了“剪刀式”反转模式;浅层圈闭是新构造运动诱发的渤南低凸起西段南边界大断层产生拉分伸展运动的产物.走滑断层在深浅层圈闭形成过程中起到了建设性作用.分析了研究区新近系油气成藏规律,强调“Y”字型伴生断层对油气分布范围的控制作用,提出了“纺锤体式”油气分布模式；指出走滑断层与边界断层或深大断层结合部位易引起地层褶皱变形形成圈闭,这也是油气运移的活跃部位,在今后的勘探工作中应加以关注.%In the western part of Bonan lower-uplift, Bohai Sea, the growth of deep and shallow (Paleogene and Neogene) structural traps were controlled by a long interaction beween SN-tren-ding extension fault system and NNE-trending right-lateral strike-slip fault system. These deep traps were formed by a compression inversion of Oligocene strike-slip faults, indicating a tectonic inversion model of "scissors" style; and the shallow traps resulted from a pull-apart extension induced by neotectonisms along the south boundary fault in the west part of Bonan uplift. The strike-slip faults have played a constructive role in the growth of both shallow and deep traps. In the study area, the Neogene hydrocarbon accumulation pattern is analyzed, the control of "Y"-shaped companion faults on hydrocarbon distribution is emphasized, and a hydrocarbon distribution model of "spindle" style is proposed. The intersections between strike-slip faults and boundary faults or deep major faults could be easy to cause folding deformation and to form traps, where active hydrocarbon migration may occur. The future exploration, therefore, should pay attention to these intersections.
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