博兴洼陷西部沙三段底部地层沉积相划分

博兴洼陷西部花沟地区井资料少,地层的波阻抗差异小,利用常规地震属性分析技术进行沉积相划分,效果不是很好。为此,探讨了利用高精度古地形恢复技术和地震共生体素聚类技术划分沉积相的方法。在古地形恢复技术研究中,重点讨论了关于古地形恢复可靠程度的各种校正及校正界定问题;在地震相分析中,引入了图像处理中的共生体素技术,探讨了地震属性共生体素聚类分析地震相划分技术;最后,综合利用古地形恢复结果和地震属性共生体素地震相分析结果,对研究区的目的层沙三段进行了沉积相划分。

Classification of sedimentary facies for the bottom formations of Sha3 member in Boxing depression

There is only a few logging data in Huagou area,west of Boxing depression.The difference in wave impedance of strata here is very little,making The classification of sedimentary facies by conventional seismic attribute analysis not satisfactory.Aiming at this problem,we probed the high precision palaeotopography recovering technology and seismic symbiosis voxel clustering technology for classifying sedimentary facies.In the study of palaeotopography recovering technology,the correction and calibration defining problem about recovering fiduciary level for palaeotopography were discussed.In seismic facies analysis,symbiosis voxel technology in graph processing was inducted to probe the seismic attribute symbiosis voxel clustering technology.Finally,palaeotopography recovering result and seismic symbiosis voxel technology analysis results were comprehensively used to classify the sedimentary facies of targets.