Application of well log normalization in coalfield seismic inversion

During the process of coal prospecting and exploration, different measurement time, different logging instruments and series can lead to systematic errors in well logs. Accordingly, all logging curves need to be normalized in the mining area. By studying well-logging normalization methods, and focus...

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Bibliographic Details
Published inJournal of coal science & engineering, China Vol. 19; no. 2; pp. 167 - 173
Main Authors Lin, Qing-Xi, Shi, Su-Zhen, Li, Shan-Shan, Luo, Li, Li, Juan, Yu, Zi-Liang
Format Journal Article
LanguageEnglish
Published Heidelberg China Coal Society 01.06.2013
Subjects
Earth and Environmental Science
Earth Sciences
Geochemistry
Geology
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Mechanical Engineering
地震反演
应用
归一化方法
正常化
波阻抗反演
测井曲线
测量时间
煤田
normalization method
frequency histogram
well log normalization
seismic inversion
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Summary:During the process of coal prospecting and exploration, different measurement time, different logging instruments and series can lead to systematic errors in well logs. Accordingly, all logging curves need to be normalized in the mining area. By studying well-logging normalization methods, and focusing on the characteristics of the coalfield, the frequency histogram method was used in accordance with the condition of the Guqiao Coal Mine. In this way, the density and sonic velocity at marker bed in the non-key well were made to close to those in the key well, and were eventually equal. Well log normalization was completed when this method was applied to the entire logging curves. The results show that the scales of logging data were unified by normalizing coal logging curves, and the logging data were consistent with wave impedance inversion data. A satisfactory inversion effect was obtained.
Bibliography:During the process of coal prospecting and exploration, different measurement time, different logging instruments and series can lead to systematic errors in well logs. Accordingly, all logging curves need to be normalized in the mining area. By studying well-logging normalization methods, and focusing on the characteristics of the coalfield, the frequency histogram method was used in accordance with the condition of the Guqiao Coal Mine. In this way, the density and sonic velocity at marker bed in the non-key well were made to close to those in the key well, and were eventually equal. Well log normalization was completed when this method was applied to the entire logging curves. The results show that the scales of logging data were unified by normalizing coal logging curves, and the logging data were consistent with wave impedance inversion data. A satisfactory inversion effect was obtained.
11-3747/TD
well log normalization, normalization method, frequency histogram, seismic inversion
ISSN:1006-9097
1866-6566
DOI:10.1007/s12404-013-0210-8