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通过对青海湖现代沉积环境与沉积相研究,并结合古代沉积盆地进行对比分析,认为风成堆积相是湖泊环境在内陆于煤气候条件下湖盆沉积的一种重要类型。本文讨论了湖泊环境中风成堆积相沉积的气候特征、形成过程、分布范围、沉积及储层岩石特征等。最后,结合国内外风成砂岩油气藏储集特征描述,指出湖盆中风成砂作为油气储集层具有良好的储集性能,这种沉积类型的分布具有一定的石油地质意义。
Through the study of the modern sedimentary environment and sedimentary facies in Qinghai Lake and the comparison with the ancient sedimentary basins, it is considered that the aeolian-accumulating facies is an important type of lacustrine sediments in the inland environment in the coal climate. This paper discusses the climatic features, formation processes, distribution ranges, sedimentary and reservoir rock characteristics of the depositional facies deposits in the lake environment. Finally, according to the description of the reservoir characteristics of the wind-sandstone reservoirs at home and abroad, it is pointed out that the gas-bearing sandstones in the lake basin have good reservoir properties as oil and gas reservoirs. The distribution of such sedimentary types has certain petroleum geological significance.