论文部分内容阅读
在地震学研究的有关领域中，地下介质的薄互层特性与裂隙的定向分布在长彼长假设下会产生等效的地展各向异性特性．地震波速度随传播方向和深度发生的变化引起了广大地球物理工作者的广泛兴趣，因为速度拾取的正确与否，会直接影响到油气勘探中动校、偏移、AVO和时深转换的结果．本文着重讨论了传统速度分析的局限性，分析了薄互层引起的横向各向同性介质中速度分析的现状和结果，实例讨论了各向异性效应对偏格处理的影响，表明各向异性效应的考虑，对于地下岩层的精确定位、横向分辨能力的提高等方面均是非常有益的．
In the related fields of seismology, the thin interbedded properties of underground media and the directional distribution of fractures will produce equivalent expansive anisotropy under the assumption of long and long distances. The change of seismic wave velocity with propagation direction and depth has aroused widespread interest of geophysical workers. Whether the velocity is picked correctly or not will directly affect the results of kinematic correction, migration, AVO and time-depth conversion in oil and gas exploration. This paper focuses on the limitations of traditional velocity analysis, analyzes the current situation and results of velocity analysis in transversely isotropic media caused by thin interbed, and discusses the effect of anisotropy on the processing of the offsets. It shows that anisotropic effect The consideration is very useful for the accurate positioning of the underground rock formation and the improvement of horizontal resolution.