Basal overlapping, top denudation, and facies variation between them are evident in Shahejie Formation, thus multiple layer systems and various types of non-structural traps can be formed.
沙河街组底超、顶剥、中间相变明显，易形成多个层系、多种类型非构造圈闭。
Based on the structural styles and trap characteristics, the traps in Liaohe basin are classified into structural trap and non-structural trap.
依据构造样式和圈闭特征，将辽河盆地的圈闭划分为构造圈闭和非构造圈闭两大类。
With further exploration of major structural traps in southern Songliao basin, the prospecting target has gradually focused on the non-structural reservoirs dominated by litho-stratigraphic traps.
随着松辽盆地南部大型构造圈闭勘探的不断深入，勘探的目标区已经逐渐转移至以岩性因素起主导作用的非构造油气藏。
With further exploration of major structural traps in southern Songliao basin, the prospecting target has gradually focused on the non-structural reservoirs dominated by litho-stratigraphic traps.
随着松辽盆地南部大型构造圈闭勘探的不断深入，勘探的目标区已经逐渐转移至以岩性因素起主导作用的非构造油气藏。
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