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http://dx.doi.org/10.7582/GGE.2012.15.4.190

A Study on Spine and Rib Properties for Standoff Compensation, Density Log  

Kim, Yeonghwa (Department Geophysics, Kangwon National University)
Kim, Jongman (Department Geophysics, Kangwon National University)
Publication Information
Geophysics and Geophysical Exploration / v.15, no.4, 2012 , pp. 190-198 More about this Journal
Abstract
A series of density log data were obtained from the standoff experiments made in the four physical model boreholes of different densities, and the properties of spine and rib curves have been derived by the analysis of the gamma-gamma data. Particularly, the shape of gamma ray propagation path between source and detector, the geometrical property of spine and rib curves, the influence of borehole density and the detector combination on the properties of the curves, and the adequate detector combination for standoff compensation could be discussed. It was also confirmed that spine and rib slopes can be expressed as proportional to source-to-detector distance ratio between far and near detectors. The result of this experiment was also effectively applied for understanding the basic concept of spine and rib slopes.
Keywords
spine; rib; detector combination; source to detector distance; density log;
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