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以准噶尔盆地东部地区侏罗系主要含煤地层八道湾组和西山窑组为研究对象,通过大量钻井岩心观察,结合前人研究成果,分析含煤地层岩性组合特征及岩相古地理特征,认为八道湾组中期为最大湖泛期,八道湾组晚期和西山窑组早期为最主要的成煤时期,识别了深湖、半深湖-浅湖、辫状河三角洲、曲流河三角洲、辫状河、曲流河、沼泽和扇三角洲等沉积环境,其中辫状河三角洲和曲流河三角洲为最有利的成煤环境。
Taking Badaowan Formation and Xishanyao Formation, the main coal-bearing strata of Jurassic in the eastern Junggar Basin as the research object, through the observation of a large number of drilling cores and combining with the previous research results, the lithologic assemblage features and lithofacies palaeogeographical features of the coal- The mid-term of the Badaowan Formation is considered to be the largest lacustrine flood season, the late of the Badaowan Formation and the early period of the Xishanyao Formation are the most important coal-forming periods. Deep lacustrine, semi-deep lacustrine-shallow lakes, braided river delta, meandering delta, Braided river, meandering river, swamp and fan delta depositional environment, in which the braided river delta and meandering river delta is the most favorable coal formation environment.