多波资料综合解释方法研究的若干进展

RECENT ADVANCES IN INTEGRATIVE INTERPRETATION USING SEISMIC MULTIWAVE DATA

本文较系统地总结了多波层位识别的主要原则和方法；提出了利用井中纵、横波速度求取地层密度、孔隙度的改进方法；研制了以小波分解与重建为基础的沿层分频处理法和高分辨剖面重建方法，提高了薄层识别的横向和纵向分辨率；发展了精度高、误差小计算薄层速度的补层加权法；介绍了各向异性介质参数反演的遗传算法，走时法以及Ｐ－ＳＶ波ＡＶＯ分析等方法；建立了多波解释系统的总体框架。所提方法的有效性和正确性均经过实际地震记录和数值模拟计算的检验，对丰富多波地震资料的解释理论，形成多波解释系统，扩大应用领域，提高应用效果具有重要参考意义。

Some progresses in integrative interpretation using seismic multiwave data are presented in this paper.They are the following:Principles and methods for identifying reflection layer from seismic multicomponent and multiwave records;New methods for calculating rock porosity and permeability using P and S wave velocities from acoustic logs;The developments of frequency division process along layer (FDPAL) and high resolution reconstruction of the frequency division sections (HRRFDS) which can improve the vertical and lateral resolutions of a thin layer based on wavelet analysis;Intruduction of a weight method of complementary bed (WMOCB) with high precision and low error for calculating seismic velocity of a thin layer;The genetic algorithm (GA),traveltime inversion (TI) and PSV AVO analysis for computing transversely isotropic media characteristics;Presentation of a flow chart for interpreting seismic multiwave data.The effectivety and application of the above methods and algorithms have been tested by seismic real data and numerical data. 