南华北太康隆起上古生界烃源岩有机地化特征

Organic geochemical characteristics of coal measures source rock of Upper Paleozoic,southern North China basin

南华北盆地太康隆起构造单元石炭-二叠系烃源岩主要发育于太原组、山西组,通过岩石热解和有机地球化学资料,对太康隆起有机质类型、有机质丰度和有机质成熟度综合分析,结果认为煤层及煤系泥岩是主要的烃源岩,煤系泥岩及煤层大部分是较好-好烃源岩,母质类型为Ⅲ型干酪根,太康隆起古生界不同地区的热演化程度差别极大,空间上极不均一,但是均达到了过成熟干气阶段,具有较大的生烃潜力。

The source rocks are well developed in the Permo-Carboniferous deposits of Taiyuan and Shanxi formation in Taikang uplift,southern North China basin.By data of source rocks pyrolysis and organic geochemistry, type and abundance of organic substance, and maturity of organic substance have been systemically studied.It is indicated that coal and coaly mudstone are mainly "middle-good".The source rocks in the Taikang uplift of Taiyuan and Shanxi formation belong toⅢ kerogan.Thermal evolution degrees of source rocks in Taikang uplift are strikingly different,but the overall maturity displays over-maturity stage which mainly generates gas.The source rocks have goog hydrocarbon generating potential ability.