三维地震资料波阻抗反演技术及其应用

利用高纵向分辨率的测井资料与连续观测的地震资料进行波阻抗反演,可以大大提高三维地震资料对地下地质情况的研究程度。以山西常村矿为例,介绍了波阻抗反演在目的层位追踪、薄层辨别、断点断距的确定、陷落柱的解释以及冲刷无煤带的圈定等方面的应用。实例表明波阻抗反演地震剖面比常规地震剖面具有明显的优势,特别是在薄层的分辨率能力上,波阻抗反演表现的尤为突出,如在该区波阻抗反演剖面上,不仅能够分辨15#煤层的三个分层,同时对6#、9#、12#薄煤层也有清晰的反映。

3D Seismic Data Wave Impedance Inversion Technique and Its Application

Using high longitudinal resolution logging data and continuously observed seismic data carry out wave impedance reversion can promote 3D seismic data underground condition investigation degree substantially. Taking the 3D seismic prospecting in the Changeun coalmine, Shanxi as an example, introduced the application of wave impedance inversion in target horizon tracing, thin bed identification, faulted point and fault throw determination, subsided column interpretation and scored barren zone delineation etc. Examples have demonstrated that the wave impedance inversion seismic section has obvious advantage over conventional seismic section, especially on thin bed resolution; its performance is distinguished, such as on the wave impedance inversion section in the area, not only can identify 3 slices of the No.15 coal seam, but also reflected thin coal seams Nos.6, 9 and 12 clearly.