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针对地震波振幅预测煤层厚度存在的噪声干扰问题,提出波阻抗反演重构地震数据的去噪手段,通过构建煤岩层单反射界面理论模型,进行了波阻抗反演重构地震数据预测煤层厚度的实验研究。结果表明:通过波阻抗反演重构后的地震数据波形更平滑和清晰;通过波阻抗反演重构后的地震数据对不同煤层厚度预测的绝对误差及绝对误差的方差较重构前都要小,且重构后的地震数据预测不同厚度煤层时的绝对误差样点较重构前的更接近基线。说明波阻抗反演地震数据能提高煤层厚度预测的精度。
Aiming at the problem of noise interference in predicting the thickness of coal seam by seismic amplitude, a method to denoise and reconstruct seismic data by wave impedance inversion is proposed. By constructing the theoretical model of single reflection interface of coal seam and using the impedance inversion to reconstruct the seismic data to predict the thickness of coal seam Experimental Study. The results show that the waveform of the seismic data reconstructed by wave impedance inversion is smoother and more clear. The absolute error and the absolute error variance of the reconstructed seismic data by wave impedance inversion are different from those before reconstruction Small, and the reconstructed seismic data to predict different thickness of the coal seam when the absolute error of the sample before reconstruction than the baseline. It shows that the inversion of seismic wave impedance data can improve the accuracy of coal seam thickness prediction.