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滴南凸起-阜北斜坡区位于准噶尔盆地中央隆起带东段,发育多个继承性古隆起,是捕获油气的有利场所.其周缘地区存在的多个生烃凹陷均发育有侏罗系泥岩和煤岩,油源关系较为复杂.从生烃条件探讨了侏罗纪煤系对彩南油田以北至滴南凸起白垩系吐谷鲁群原油和彩南油田以西至阜北斜坡区侏罗系石树沟群原油的贡献.该区域侏罗系煤岩分布零散,厚度最厚达30m,显微组分以惰质组为主,与侏罗系泥岩相比煤的供烃能力相对较弱.同时通过油源对比以及与南缘煤成油生物标志化合物特征对比,明确了研究区白垩系原油来源于二叠系泥岩,侏罗系原油来自二叠系泥岩和侏罗系泥岩.
The Dilanan-Fu-Bei slope is located in the eastern segment of the Central Uplift in the Junggar Basin, where a number of inherited paleohighs are developed, which is a favorable site for oil and gas capture. Many hydrocarbon-generating depressions in its periphery are characterized by Jurassic mudstone And the relationship between coal and rock is more complicated.From the hydrocarbon generation conditions, the paper discusses the relationship between the Jurassic coal measures and the Cretaceous Tuuguru oilfield in the north of Caiannan oilfield and the Dainippon uplift and the Jurassic stone tree in the west of Caenan oilfield Gully oil contribution. The Jurassic coal in this area is scattered and has a thickness of up to 30m, with the main component of the inertinite. Compared with the Jurassic mudstone, the hydrocarbon supply capacity of coal is relatively weak. By comparing the oil source with the characteristics of oil biomarkers in the southern margin, it is clear that the Cretaceous crude oil from the study area originated from Permian mudstone, and the Jurassic crude oil comes from Permian mudstone and Jurassic mudstone.