临南地区曲古1井产出的天然气证明是源自石炭系和二叠系煤岩。
The gas produced from Qugu-1 Well in Linnan area proved that the main gas source rock was the coal bed of the Carboniferous-Permian System.
北淮阳地区的石炭系甚至二叠系的层序和相带分布表明，它是代表一个向南开口的大型盆地。
The Carboniferous sequence (including the Permian in the upper part) and its sedimentary facies pattern indicate that the rocks were formed in a large basin opening toward the south.
大牛地气田位于鄂尔多斯盆地伊陕斜坡北部，主要含气层位为上古生界石炭系太原组、二叠系山本组和下石盒子组。
Daniudi gas Field lies in the north of Yishan Slope in Ordos Basin. Its mainly gassy formations are Carboniferous Taiyuan formation, Permian Shanxi formation and Lower Shihezi formation.
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