【摘要】 位于新疆焉耆盆地的宝北区块,次级断层十分发育。次级断裂具有规模小、断距小、延伸距离短,以及地震资料分辨率较低,剖面不易识别的特点。本文基于区域构造背景,采用三维地震、测井资料解释及钻井岩芯精细观测等多种方法对该区块三级断层的几何学、运动学和动力学特征进行了综合研究,并对三级断层的展布规律、组合模式和动力学机制进行了讨论。该区块是在区域构造应力场控制下受到不均匀挤压作用,而具有独特哑铃状形态的背斜构造。继而发育的次级断裂构造的分布规律和性质具有明显的分区特征:NW段为左行走滑剪切模式,SE段为右行走滑剪切模式。其动力学机制为不均匀推挤作用下的横弯双向剪切模式。更多还原

【Abstract】 Baobei anticline is located in Baolang oil field, Sinkiang. Faults are well developed in this area. These faults are small and cannot be identified easily. Based on the 3D seismic data, well logging and observation of cores accurately, this paper studies the geometry, kinematics and dynamics of faults. Then, we discuss the development, combination patterns and dynamical mechanism of faults. The deformation of the unique shape of Baobei anticline is the result of the nonuniform pressure from the SW. The distributions and combinations of faults can be divided into two sharply distinguished parts. The combination pattern of faults denotes the left-lateral strike-slip at the NW part, andright-lateral strike-slip at the SE part.更多还原