青海省聚乎更煤矿区煤系烃源岩生烃过程研究

Study on Hydrocarbon-Generating Process of Coal Measure Source Rock in Juhugeng Coal Mine Area of Qinghai Province

摘要: 通过“青海省天峻县聚乎更煤矿区南部煤炭预查”工作的开展，以及对烃源岩分布特征和烃源岩生烃过程的模拟研究，认为青海省聚乎更煤矿区煤系烃源岩主要有3种：煤、暗色泥岩、油页岩。煤层主要分布在木里组上段，以下₁煤和下₂煤2层巨厚煤层为主要代表；暗色泥岩贯穿于木里组上段、江仓组下段、江仓组上段；油页岩主要分布江仓组上段。煤系烃源岩有2次生烃过程，分别为侏罗纪晚期—白垩纪早期、古近纪早期，前者为主要生烃期，后者为次要生烃期。

Abstract: Based on the"pre-survey of Juhugeng coal mine in Tianjun County, Qinghai Province" and the simulation research on the distribution characteristics and hydrocarbon-generating process of the source rocks, it is considered that there are three kinds of source rocks:coal, dark mudstone and oil shale.The coal seams are mainly distributed in the upper section of Muli formation; dark mudstone is in the upper section of Muli formation and Jiangcang formation;oil shale is mainly distributed in the upper section of Jiangcang formation. Two hydrocarbon-generating processes of the source rocks are late Jurassic-early Cretaceous andearly Paleogene with the former being the mainhydrocarbon-generating stage.