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地质论评  2004 

构造挤压对库车坳陷异常地层压力的影响

Keywords: 构造挤压库车坳陷油气勘探含油气盆地异常高压

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Abstract:

库车坳陷异常高压呈东西向带状分布,中部克拉苏-东秋-迪那构造带的地层压力系数在2.0以上,往南北两侧递减。异常高压的分布和古近系的膏盐岩分布密切相关,巨厚的膏盐层盖层是形成异常高压的重要条件。喜马拉雅晚期强烈的构造挤压作用是库车坳陷异常高压形成的主要因素,地层压力和过剩地层压力与最大构造主应力之间具有较好的相关性,构造抬升对该区异常高压形成的影响较小。异常高压对油气藏的形成和保存有十分重要的作用,它是库车坳陷形成大型油气藏的必要条件。

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