地震资料谱矩法反演煤层厚度

在一阶近似条件下，典型的低速薄层煤层的厚度与地震记录的频谱积分成正比，与地震子波频谱一阶矩成反比，谱矩法在已有的煤层厚度揭露资料在约束条件下，求得标定系数，利用地震资料反演煤层厚度。理论模型与实际资料试算表明，该方法不但适用于薄煤层，而且在较厚煤层厚度预测中精度更高。

Spectral moment method to inverse coal seam thickness by seismic data

Under the first order approximate condition, there was the direct ratio between the coal seam thickness of a typical thin layer and seismic trace spectral integral representation, and it exits the inverse ratio relation with the first order spectral moment method. Only based on the constraint conditions with the some known seam thickness, can and the correction coefficients be gained. The spectral moment method can predict coal seam thickness. It has been proved effective by the model and the seismic data calculation. This method has higher accuracy in the thick coal seam than in the thin coal seam.