Research and Implementation of Oil-control Mechanism in the Transition Section of Gaoyou Depression

The theory of structural transition section is used to study Zhenwu and Wubao fault zones in Gaoyou Depression of Subei Basin. The study shows that not only the extended tectonic systems are developed in the tectonic transition sections, also the transition sections are grown in the extended tectonic system, there are different oil control mechanisms in different tectonic systems. In the extended tectonic systems, it is generally a press-torsion property with better seal capacity. While in a strike-slip tectonic system, it is intensive with poor seal capacity. It is considered that different tectonic transition sections with different oil control mechanisms are developed in Xuzhuang and Chenbao Areas, by which a theoretical basis is provided for further exploration and development in the area.