Application of Multi-parameter lithological Inversion in Limestone Interpretation
ZHANG Yabing
CHEN Tongjun
CUI Ruofei
Abstract： The surge impedance inversion which uses the density and acoustic velocity logging curve is one of the most important methods in coalfield seismic exploration. As the surge impedance difference between limestone and surrounding rocks is small,it is difficult to identify limestone horizon with the surge impedance information acquired from the conventional surge impedance inversion. Through the analysis on the characteristics of the multi-logging curves of the western No. 6 mining district in Yaoqiao Mine,it was found that the coal seam has a lower density and a higher resistivity as compared with the surrounding rock;and the apparent resistivity of limestone is very high. Therefore,a quasi-density curve was obtained by merging the density curve with the apparent resistivity curve in limestone interpretation and the anomaly of the coal seam's density and the limestone's apparent resistivity was highlighted. The quasi-surge impedance data which were obtained with multi-parameter lithological inversion method and the spatial distribution and the thickness change of limestone which were determined with this method can provide an important basis for water prevention and control in coal mines.
Keywords：logging curve mergingmulti-parameter lithological inversionquasi-surge impedancelimestonewater prevention and control
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 62-65 )