塔中奥陶系油源岩碳、硫同位素对比分析  

Comparative Analysis of Carbon and Sulfur Isotopes of Ordovician Oil Source Rocks in Tazhong

作　　者：杨见[1,2] 何寅 王振齐[1,2] YANG Jian;HE Yin;WANG Zhen-qi(Key Laboratory of Petroleum Resources and Exploration Technology of Ministry of Education,Yangtze University,Wuhan Hubei 430100,China;College of Earth Sciences,Yangtze University,Wuhan Hubei 430100,China;Wuhan Ship Vocational and Technical College,Wuhan Hubei 430050,China)

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [2]长江大学地球科学学院,湖北武汉430100 [3]武汉船舶职业技术学院,湖北武汉430050

出　　处：《粘接》2020年第4期37-39,44,共4页Adhesion

摘　　要：为进一步落实塔里木盆地塔中奥陶系碳酸盐岩油-源对比,确定烃源岩沉积环境,利用奥陶系不同层位产出原油碳、硫同位素分析对比。研究表明,寒武系干酪根δ13C总体上应该要比奥陶系轻,寒武系原油不同δ13C值应该来自寒武系不同有机相烃源岩。奥陶系原油族组分的δ13C值特征表明,在奥陶系内确实普遍发生了硫酸还原作用,并受其影响下,寒武统和鹰山组原油中硫代金刚烷、苯并噻吩和二苯并噻吩类单体含硫化合物的δ34S值远远大于寒武系干酪根δ34S值,也大于奥陶纪海水的δ34S值,而与寒武纪海水接近,因此,寒武系无机硫产生了并入。在奥陶系和中下寒武统中均发生了硫酸还原作用,并对其中的油气产生了影响。In order to further implement the oil-source comparison of the Ordovician carbonate rocks in the Tarim Basin,the sedimentary environment of the source rocks was determined,and the carbon and sulfur isotope analysis of the crude oil produced by different Ordovician layers was used.Studies have shown that the Cambrian kerogen 813C should be lighter than the Ordovician,and the different 813C values of the Cambrian crude oil should come from the Cambrian different organic source rocks.The characteristic of the 813G value of the Ordovician crude oil component indicates that sulfuric acid reduction is generally occurring in the Ordovician,and under the influence of it,The 834S value of thioadamantane,benzothiophene and dibenzothiophene monomeric sulfur-containing compounds in the Cambrian and Yingshan Formation crude oil is much greater than the 834S value of Cambrian kerogen and also the 834S value of Ordovician seawater Value,and is close to the Cambrian seawater.Therefore,the Cambrian inorganic sulfur production Incorporation.Sulfuric acid reduction occurred in both the Ordovician and the Lower Lower Cambrian,and it affected the oil and gas.

关 键 词：奥陶系 碳酸盐岩 烃源岩 碳同位素 

分 类 号：P59[天文地球—地球化学]