中亚阿姆河盆地构造演化及其对油气藏的控制作用

Tectonic evolution and its vital role for oil and gas reservoir in Amu Darya basin

阿姆河盆地是中亚地区非常重要的天然气产区,由于缺乏全盆地综合性的研究工作,对盆地构造及油气地质特征缺少整体性的研究和把握,深层资源潜力尚不清楚.本文从中亚地区大地构造背景分析入手,依托阿姆河右岸天然气项目及邻区的相关研究资料,对阿姆河盆地的构造特征及演化过程进行了全面剖析,阐明了各个时期构造发育及沉积建造特征,并着重分析了各个演化阶段的原型盆地性质.结合油气成藏规律研究,阐述了阿姆河盆地主要构造特征对油气藏的控制作用.

Amu Darya Basin is one of the most important areas full of natural gas in Central Asia.Some integrated research should be conducted for lack of understanding in whole basin.Little is known about deep layers below Jurassic.The research was based on those geologic data from the areas surrounding Amu Darya Right Bank block.Related gas exploration work has already been done for several decades.This article started with tectonic analysis of Amu Darya Basin and tectonic background of Central Asia. The research analyzed the structural characteristics and evolutionary process of Amu Darya Basin in details.Their structural development and sediment formation in every stage were clarified,and the nature of prototype basins for all evolution stages was classified also.Contrasting to the distribution of oil and gas fields in this basin,the article tried to explain how the structures control the accumulation of oil and gas.