In the present study think Wulungu depression mainly comes from the contribution of carboniferous hydrocarbon source rocks of oil and gas, according to the occurrence of crude oil, crude oil physical property, light hydrocarbon fingerprints, biomarker compound characteristics and gas composition and isotopic characteristics, the Wulungu depression of crude oil is divided into two classes I, II, natural gas is divided into two categories, A, B, there were significant differences between each other.By comparison with oil source, and two types of oil and gas saturated hydrocarbon, biomarker compounds, and carbon isotope characteristics of biomarkers show that type I crude oil has strong similarity to the dripping springs group, mainly from the lower carboniferous dripping springs group, class II on crude oil mainly come from carboniferous bata based on mountain within the group.Source analysis results show that A type of natural gas production from the carboniferous bata based on mountain formation hydrocarbon source rocks, B type gas from the ginger bath set of set of hydrocarbon source rocks of lower carboniferous.%目前研究认为乌伦古坳陷油气主要来自石炭系烃源岩的贡献,根据原油产状、原油物性、轻烃指纹、生物标志化合物特征及天然气组分、同位素特征,将乌伦古坳陷原油划分为I、II两类,天然气划分为A、B两类,彼此之间存在显著的差异.通过油源对比,及两类油气饱和烃、生物标志化合物以及碳同位素特征,表明I类原油生物标志物与滴水泉组具有较强的相似性,主要来自下石炭统滴水泉组,II类原油主要来自上石炭统巴塔玛依内山组.气源分析结果表明,A类天然气产自于上石炭统巴塔玛依内山组烃源岩,B类天然气来自于下石炭统姜巴斯套组烃源岩.
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