乾东北部地区构造解释及断裂特征分析

Structure Interpretation and Fracture Characteristics Analysis of Northeastern Qian＇an Area in Songliao Basin

在松辽盆地乾东北部地区综合运用层位精细标定、精细构造解释、层位自动追踪、本征值相干体技术和变速成图等技术开展精细构造解释。特别是“两步法”层位精细标定技术的运用为后续的工作奠定了基础；EPOS软件的本征值相干体技术的运用，对有效地识别断层起到了关键作用；以及速度分析和构造成图技术的应用，大大提高了构造成图的精度，为断裂特征分析提供了基础。，通过本次精细构造解释，落实了目的层构造形态和断层展布特征，并对研究区断裂特征进行了深入研究。

At the process of seismic interpretation of northeastern Qian＇an area in Songliao Basin , authors applied techniques such as fine calibration for horizon, fine structural interpretation, automatic horizon tracing, eigenvalue related body technique and variable speed mapping and so on which are applied to do fine structural interpretation. Specifically ,＂Two-step＂ technique of horizon fine calibration is applied to lay the foundation for the following work; application of EPOS software＇s eigenvalue related body technique played a key role in identifying small faults. In addition, application of velocity analysis and structural mapping techniques enhanced greatly the accuracy of structural mapping,and provided the basis for analysing the characteristics of fault. According to the fine structural interpretation, the structural shape of the target horizon and fault distribution are determined, and studied deeply the fault features.