断层识别技术在贝中油田的应用

Application of Faults Identifying Technique in Beizhong Oilfield

在复杂断块油气藏中,断层对油气有重要的控制作用,精细解释断层、理清断裂关系至关重要.针对贝中油田断裂系统复杂、断层难以解释的特点,在井震结合剖面识别的基础上,综合应用了频谱分解技术、地震曲率属性分析技术、相干分析技术和三色混频技术,最后以三维地质构造建模作为整体指导,通过多种方法综合使用,来进行断层解释工作.在研究区取得了良好的应用效果,尤其是对于小断层识别,有效地克服了地震分辨率不足的缺点,提高了解释精度,发现和落实了一批小断层,同时对断层的平面展布以及空间交切关系的合理性有着重要的指导作用,落实了研究区的区域低幅度构造的,实现精细构造解释的目标.

Faults play an important role in the complex fault-block reservoir, fine fault interpretation and combination matter a lot. Aiming at the difficulty of the complex fracture system and fault interpretation, this paper bases on the union of wells and seismic data, and make full use of spectral decomposition, seismic curvature, coherence analysis and frequency mixing with 3 colors, then governs the whole interpretation with 3D structural model. With the use of various methods, we start to identify faults. This technique achieves a good effect in research area, especially for the small fault identifying, overcomes the lack of resolution in seismic data, increase the interpretation accuracy, find and delineate a batch of small faults, and guide the plane distribution and space intersection relation of faults, commit the regional low-amplitude structure, achieve the goal of fine structural interpretation.