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以平衡剖面技术为理论依据,利用Move软件对营尔凹陷地震剖面进行构造恢复,编制该区构造发育剖面,恢复其构造演化史。营尔凹陷是酒泉盆地东部早白垩世发育的一个次级断陷,目前其主要表现为早白垩世拉张和新生代挤压作用下形成的断坳叠置型结构。本次主要研究营尔凹陷白垩纪至新生代的构造演化史,其经历三个主要演化阶段,分别是早白垩世拉张断陷期(K_1),晚白垩世至古新世挤压隆升期(K_2-E_1),新生代挤压坳陷期(E_2-Q)。本区构造演化控制其成为断陷与坳陷叠合型盆地,控制长沙岭构造转换带的形成,并控制油气在该构造转换带富集。
Based on the balanced profile technology, the software of Move is used to recover the tectonic development profile of Ying’er Sag, and the tectonic development profile of the area is compiled to restore its tectonic evolution history. The Yinger sag is a sub-rift developed during the Early Cretaceous in the eastern Jiuquan basin. At present, its main manifestation is the fault-depression superimposed structure formed by the extension of the Early Cretaceous and the Cenozoic extrusion. The main study tectonic evolution of Cretaceous to Cenozoic in Yinger sag, which has undergone three major evolution stages, that is, the Early Cretaceous pull-out faulting (K_1), Late Cretaceous to Paleocene extrusion uplift Period (K_2-E_1), Cenozoic extrusion depression period (E_2-Q). The tectonic evolution of this area controlled it to become a superimposed basin of fault depression and depression, controlling the formation of the Changlingling structural transformation zone and controlling the accumulation of oil and gas in the structural transition zone.