鄂尔多斯盆地Y井区烃原岩特征分析及评价  

Characteristics and evaluation of hydrocarbon source rocks in Y well area of Ordos Basin

作　　者：张章[1] 朱玉双[1] 全洪慧[1] ZHANG Zhang;ZHU Yu -shuang;QUAN Hong -hui(State Key Laboratory of Continental Dynamics/Department of Geology,Northwest University,Xi'an 710069,China)

机构地区：[1]西北大学大陆动力学国家重点实验室/地质学系,陕西西安710069

出　　处：《地下水》2018年第6期126-130,共5页Ground water

摘　　要：通过对鄂尔多斯盆地Y井区烃源岩的类型及特征进行分析,明确鄂尔多斯盆地Y井区烃源岩主要泥岩型烃源岩和碳酸盐岩型烃源岩。根据研究区实际烃源岩条件和前人研究成果,建立了泥岩型、煤系地层中的泥岩型、煤岩型、碳酸盐岩型等4类烃源岩综合评价标准。从有机质丰度、有机质类型、有机质成熟度等3方面对研究区烃源岩进行了综合评价,以期对下一步勘探起到实际的指导意义。研究表明:鄂尔多斯盆地Y井区烃源岩以上古生界为主,均已进入高成熟阶段或过成熟阶段,烃源岩属于中等较好烃源岩或烃源岩范畴,整体处于成气热演化阶段,已进入高成熟凝析油湿气～过成熟干气阶段。By analyzing the types and characteristics of source rocks in the Y well area of the Ordos Basin,the main mudstone source rocks and carbonate rock source rocks of the source rocks in the Y well area of the Ordos Basin are identified.According to the actual source rock conditions in the study area and the previous research results,the comprehensive evaluation criteria of four types of source rocks such as mudstone type,coal type and carbonate type in mudstone type and coal series are established.From the aspects of organic matter abundance,organic matter type and organic matter maturity,the comprehensive evaluation of source rocks in the study area was carried out,in order to provide practical guidance for the next step of exploration.The research indicates that the Paleozoic basin above the source rocks in the Y well area of the Ordos Basin has been dominated by the high-mature stage or the over-mature stage.The source rocks are medium-quality source rocks or source rocks,and the whole is in the form of gas-forming heat.In the evolution stage,it has entered the stage of high mature condensate moisture ~ over mature dry gas.

关 键 词：烃源岩 特征 鄂尔多斯盆地 评价 

分 类 号：P58[天文地球—岩石学]