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http://dx.doi.org/10.9720/kseg.2015.2.281

Frequency Distribution Characteristics of Formation Density Derived from Log and Core Data throughout the Southern Korean Peninsula  

Kim, Yeonghwa (Dept. of Geophysics, Kangwon National University)
Kim, Ki Hwan (Dept. of Geophysics, Kangwon National University)
Kim, Jongman (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Hwang, Se Ho (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
The Journal of Engineering Geology / v.25, no.2, 2015 , pp. 281-290 More about this Journal
Abstract
Log density data were collected and compared with the core density data throughout the southern Korean Peninsula. The comparison reveals that the log densities obtained from gamma-gamma log are much lower than the core densities obtained from laboratory density measurement of core samples. The anomalously low log densities can be attributed to the small-source density log data. Correlation analysis reveals differences between densities derived from the two methods, indicating that a data quality problem arises when using small-source log data. The problem is probably due to the fact that small-source data have not been obtained under ideal conditions for maintaining the appropriate relationship between gamma response and formation density. The frequency distribution characteristics of formation density in the southern Korean Peninsula could be determined using the core and the standard-source log data which are well-correlated.
Keywords
core density; log density; standard source; small source; frequency distribution;
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