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东濮凹陷位于华北盆地中南部,是一个以古生界为基底、巨厚新生代沉积为主的断陷。十余年勘探证实,东濮凹陷为我国东部陆相含油气盆地中天然气丰度较高的地区之一。稳定碳同位素比值测量是进行油气源对比研究中普遍使用的有效手段之一。东濮凹陷较丰富的天然气除来自下第三系生油层之外,是否下伏深部的石炭-二迭纪煤系也是一个重要的气源层?碳同位素分析在解决这个问题上取得了较好的成果。
Dongpu depression is located in the central and southern North China Basin, is a Paleozoic-based, thick Cenozoic sedimentary-based fault. More than ten years of exploration have confirmed that Dongpu depression is one of the areas with high natural gas abundance in continental oil and gas basins in the eastern part of China. Stable carbon isotope ratio measurement is one of the most effective methods used in the comparative study of oil and gas sources. The abundant natural gas in Dongpu Depression is also an important gas source layer in addition to the underlying third-generation oil layer, and whether the underlying Carboniferous-Permian coal measure is also an important gas source. The carbon isotope analysis has achieved good results in solving this problem The result.