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松辽盆地东南隆起区中生代盆地为断坳叠置式结构。坳陷层位于松辽盆地边缘 ,由于受嫩江末期构造运动影响 ,东南隆起区整体抬升 ,广遭剥蚀 ,坳陷层残留厚度在盆地各部位差异很大 ,生烃能力有限 ,难以成藏。断陷层是本区油气勘探的主要目的层系 ,各断陷之间长期被基底古隆起分割 ,彼此相对独立。但它们又是在统一区域构造应力作用下形成的 ,各断陷层又具相似性。油气能否成藏主要受各断陷盆地资源量及生烃强度的制约。
The Mesozoic basins in the southeast uplifted area of Songliao basin are fault-depression stacked structures. Due to the influence of the late Nenjiang tectonic movement, the southeast uplifted area is uplifted and widely eroded. The residual thickness of the sag zone is quite different in various parts of the basin, and the hydrocarbon generation capacity is limited and it is difficult to accumulate. Fault depressions are the main strata of hydrocarbon exploration in this area, and the faults are separated from each other on a long basis by the paleohighs, independent of each other. However, they are formed under the tectonic stress in a unified area, and the faults have similarities. Whether hydrocarbon can be formed or not is mainly controlled by the amount of resources and hydrocarbon generation intensity in each rift basin.