摘要
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。
This article in view of thenoise interference problemsof seismic wave amplitude inprediction of thecoal seam thickness,waveimpedance inversion is put fonvard reconstructing seismic data denoising method.By constructing SLR coal strata forms surface theoiymodel,the wave impedance inversion reconstruction experiment research of seismic data to predict coal seam thickness.The followingconclusions:(1)the wave form of the earthquake wave after reconstruction through impedance inversion is more smooth and clear.(2)the absolute error and the variance of the absolute error of the reconstruction dataof the wave impedance inversion of seismic data issmallerthan before of the reconstruction,andthe absolute error of sample point is closer to the baseline than before of the reconstructionindifferent coal seam thickness prediction.This prove that wave impedance inversion of seismic data can improve the accuracy of predictedcoal seam thickness.
作者
吕红红
LU Hong-hong(Tunlan Coal Mine,Shanxi Coking Coal Group Xishan Coal Electricity Group Company, Taiyuan 030206 , China)
出处
《煤》
2017年第4期13-14,28,共3页
Coal
关键词
波阻抗反演
重构
地震数据
煤层厚度
wave impedance inversion
reconstruction
seismic data
coal seam thickness
