波阻抗反演技术在煤田地震岩性勘探中的应用

Application of wave impedance inversion technique to the seismic lithological exploration in coalfield

在煤田地震勘探中,岩性勘探已成为人们研究的一个热门课题。与其他地震反演技术相比,波阻抗反演技术不仅可提高原始地震资料的垂向分辨率,而且可以将地震波转换为地层信息。介绍了波阻抗反演技术的原理及实现方法,并以平顶山某采区岩性勘探为例,说明波阻抗地震反演方法可以进行岩性勘探,并可用来预测煤层厚度,同时还可以识别煤层中的夹矸。

In coalfield seismic survey lithological problem is a popular subject in which people have been studing in recent years. Compared with the other seismic inversion techniques, the wave impedance inversion technique not only can increase vertical resolution of seismic data, but also can change seismic wave data into information of layers. In this paper, the principle and achieve means of the wave impedance inversion technique are introduced, and taking a seismic exploration project from Pingdingshan coal mine for example, the methods and application effects of the wave impedance inversion technique on the seismic lithological exploration in coalfields are illuminated, it can be used to forecast coal layer thickness and indetify dirt bands in coal seam.