惠民凹陷临邑断裂沙四、沙三段活动规律及对油气成藏的控制

The Activities of ES4 and ES3 for Linyi Fracture Belt in Huimin Depression and Its Control on Hydrocarbon Reservoir Formation

研究了临邑断裂断层不同走向段的生长指数和断层落差,分析沙四、沙三段各沉积亚段地层沉积特征,研究发现断层的幕式活动控制了地层沉积和空间展布,沉降中心沿断裂带自西向东迁移;深入剖析断面发育特征与断层两盘岩性对置关系,探讨了临邑断裂带的油气运移轨迹及勘探潜力区带。

In the paper, the growth index and fault throw of different trends in the Linyi fracture belt have been studied. The sedimentation characteristics for each sedimentary subzone of ES4 and ES3 have been analyzed here. The episodic activities of fault are found to control stratigraphic sedimentary and spatial distribution, which makes subsiding center migrate from west to east along the direction of the fracture belt. Furthermore, the contraposition relation between the development characteristics and lithology of faulted uplifted wall and downthrow block have also been de- tailedly discussed and the migration track of oil and gas and potential zones for exploration in the Linyi fracture belt have been redefined. The research is helpful for the following exploration and development of the Huimin depression.