三塘湖盆地下白垩统剥蚀量恢复及其对油气生成的影响

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RESTORATION OF THE LOWER CRETACEOUS DENUDED THICKNESS IN THE SANTANGHU BASIN AND ITS EFFECT ON HYDROCARBON GENERATION

摘要: 文中利用泥岩声波时差和镜质体反射率法计算了三塘湖盆地下白垩统的剥蚀量,两种方法得出的结果吻合较好.计算结果表明,下白垩统剥蚀量介于300～700m之间,自西向东剥蚀量呈递增的趋势.新生界沉积厚度小于下白垩统剥蚀量,未能弥补剥蚀造成的热损失.因此,晚燕山运动对油气的生成起着破坏作用.
- 声波时差 /
- 镜质体反射率 /
- 剥蚀量 /
- 下白垩统 /
- 破坏作用 /
- 三塘湖盆地
Abstract: In this paper,the mudstone acoustic time difference method and the vitrinite reflectance method are used to calculate the Lower Cretaceous denuded thickness in the Santanghu basin.The results from the two methods fit well.It is revealed that the Lower Cretaceous denuded thickness is between 300m to 700m,and the denuded thickness increases from west to east.The Cenozoic sedimentary thickness,which is smaller than the Lower Cretaceous denuded thickness,cannot make up heat losses caused by denudation.Therefore,the Late Yanshanian movement played a destroying role in the generation of hydrocarbon.
- acoustic time difference /
- vitrinite reflectance /
- denuded thickness /
- the Lower Cretaceous /
- destroying effect /
- the Santanghu basin

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