论文部分内容阅读
为确认狮子沟构造油气来源,对研究区域内天然气组成、油气碳同位素、油轻烃和生物标志化合物进行研究,确认了狮子沟构造油气的全烃地球化学特征,细分了不同油气的成因和来源。研究表明,狮子沟构造油气主要来自下第三系烃源岩,并多以湖相腐泥或混合型成因为主。深层E32和E31油气多具有自生自储的特征,浅层油气属于E32和E31成因烃类的混合叠加而成,但多表现为以E32来源为主、E31来源为辅的特征,并且充注部位不同,其中E31成因油气注入区分布在构造高部位,而E32成因油气注入区分布于构造翼部。
In order to confirm the sources of hydrocarbon source in Shizigou, the gas composition, hydrocarbon carbon isotopes, oil-light hydrocarbons and biomarkers in the study area were studied to confirm the hydrocarbon hydrocarbon geochemical characteristics of the Shizigou structural hydrocarbon, and the genesis of different hydrocarbon types source. The research shows that the petroleum and gas in Shizigou structure mainly come from the source rocks of the Lower Tertiary and are mostly dominated by lacustrine sediment or mixed type. Most of the E32 and E31 oil and gas in the deep layers have the characteristics of self-genesis and self-storage. Shallow oil and gas belong to the mixed superposition of E32 and E31 hydrocarbon, but the features are mainly E32 source and E31 source, , E31 oil-gas injection zone is located in the high tectonic setting, and E32 oil-gas injection zone is located in the structural wing.