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松辽盆地“中部含油组合”的含油模式是：在区域盆状结构构造背景上，半环状沉积相带与构造特征、水动力条件有机配置，形成三条油水分界趋势带；在趋势带夹持区内，油藏按构造线方向东西分带，依岩相带南北分块，构成十个不同类型的油藏区带。平行于盆地长轴方向分布着不同类型油藏带，以非背斜油藏占绝大多数（＞80％）；深坳陷区分布着较多的以岩性为背景的油藏。含油模式形成主要有三个时期，即中白垩统嫩江组三段沉积前，晚白垩世前和第三纪前。油藏形成自东向西发育，具东早西晚的特点。搞清一个盆地的含油模式，能揭示其石油地质特征，勾绘其最终的含油面貌，清晰地展示最有利含油部位。因此，探索一个盆地的含油模式是每个石油地质工作者的主要任务之一。
The oil model of the “middle oil combination” in the Songliao Basin is that the semi-annular sedimentary facies belts and tectonic features and hydrodynamic conditions are organic in the tectonic background of basin-shaped structure, and the three oil-water boundary trends belts are formed. In the area, the reservoir is zoned by the direction of the tectonic line and is divided into north and south blocks by lithofacies to form ten different types of reservoir zones. Different types of reservoir belts are distributed parallel to the long axis of the basin, accounting for the overwhelming majority (> 80%) of the non-anticlinal reservoirs; more lithologically-related reservoirs are distributed in the deep depression. The formation of oil-bearing model has three main periods, that is, before the deposition of the third member of the Middle Cretaceous Nenjiang Formation, before the Late Cretaceous and before the Tertiary. Reservoir formation from east to west development, east early west late features. Identifying the oil-bearing patterns of a basin reveals its petroleum geology, characterizing its ultimate oil profile and clearly showing the most favorable oil-bearing parts. Therefore, exploring the oil pattern of a basin is one of the major tasks for every petroleum geologist.