高邮凹陷南部断裂带构造样式及油气富集关系

Tectonic Styles and Correlation of Oil and Gas Enrichment in the Southern Fault Zones of Gaoyou Sag

通过应用地质、地震、测井等基础资料对高邮凹陷南部复杂断裂带构造样式及其形成机制进行了详细剖析,认为苏北盆地高邮凹陷南部断裂带主要存在2种构造样式:伸展构造样式和伸展-走滑构造样式。其中,伸展构造样式又包括滑动断阶、翘倾断块、重力背形3种构造样式。通过对不同构造样式在平面及剖面上的特征分析,结合断裂带油气藏分布特征及油气成藏规律的研究结果,明确了不同地区、不同层位构造样式与油气藏的对应关系。

Based on the application of geology,seismic,logging and other basic data,the tectonic styles of southern complex fault zone and its formation mechanism were analyzed in detail.It was considered that there were two kinds of tectonic styles in the southern fault zone in Gaoyou Sag of Subei Basin,which included extensional tectonic style and extension and strike-slip tectonic style.Among them,extensional tectonic style included three tectonic styles such as sliding fault step,upwarping faulted block and gravity back shape.According to the analysis of different characteristics of tectonic styles in the plane and profile,combined with the result of gas reservoir distribution characteristics of faulted zone and rules of hydrocarbon accumulation,and oil gas reservoir corresponding relationship of tectonic styles of different horizons in different regions are clarified.