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在对伊通地堑三维地震资料进行系统的构造解析的基础上 ,结合区域地质和钻井资料 ,对伊通地堑构造样式进行了详细的解剖 ,并简要分析了不同构造样式的油气分布规律 .结果表明 ,伊通地堑构造样式以“基底卷入型”为主 ,从盆地的动力学机制上属于“走滑 -拉分型”,进一步可概括为5个类型构造样式 ,分别是 :台阶式断块型、掀斜反转型、简单掀斜型、不对称双断型和伸展断块型 ,而且每一个断陷都以一种构造样式占主体 ,其展布具有明显的规律性 .构造样式的差异是造成不同断陷具有独特油气分布规律的主导因素
Based on the systematical structural analysis of the 3D seismic data of Yitong Graben, combined with the regional geological and drilling data, the structural styles of Yitong graben are dissected in detail and the distribution rules of oil and gas in different tectonic styles are briefly analyzed. The results show that the structural style of Yitong graben is mainly “basal-intruded” and belongs to “strike-slip-pull type” from the dynamic mechanism of the basin. It can be further summarized into five types of tectonic styles: step Type of block fault, tilt-reversal type, simple tilt-type, asymmetric double-break type and extensional fault block type, and each fault is dominated by a tectonic style with obvious regularity. The difference of tectonic styles is the dominant factor that causes the different oil and gas distribution regularities in different faults