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铲式反转断层系指伸展盆地中控制半地堑系统的主控断裂遭受挤压变形所产生的压缩构造。随着压应力递增,铲式断层系统中的倾向滑动可渐次形成反转-“鱼叉”状构造、上盘交截冲断层、下盘捷径冲断层、“向后破裂”下盘捷径冲断层叠瓦扇、“向后破裂交截”冲断层、向前破裂后冲断层叠瓦扇、后冲断层与下盘捷径冲断层扇形构造和脊部塌陷“上突”构造等。由其形成的各种冲断系统及相关背斜直接叠覆在生油断陷上,生储运配置关系得天独厚,十分有利于油气的聚集与成藏。
Shovel inversion fault refers to the compression structure produced by the extrusion deformation of the main control fracture in the controlled half-graben system in the extension basin. With the increasing of compressive stress, the tendency sliding in the shovel-type fault system can gradually form the reverse - “harpoon ” structure, the upper plate intercept thrust fault, the lower plate shortcut thrust fault, “back rupture ” The plateau thrusts the thickly laminated fan, “backward rupture interception ” thrust fault, fault rupture after the fault-thickening of the tile fan, thrust fault and the short cut short thrust fault fan structure and ridge collapse "Construction and so on. Various kinds of thrusting systems and related anticlines formed by them directly overlap the oil-producing fault, and have a unique relationship of transportation, storage and transportation. They are very conducive to the accumulation and accumulation of oil and gas.