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Geostatistical Approach for Shale Volume Estimation in Water-bearing Formations
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Near Surface 2011 - 17th EAGE European Meeting of Environmental and Engineering Geophysics, Sep 2011, cp-253-00089
- ISBN: 978-90-73834-15-6
Abstract
In the paper, factor analysis as a geostatistical method used for the interpretation of borehole geophysical data is presented. The result of the procedure is a factor log, which contains valuable information about the lithology of the sequence of strata. We found a strong connection between one special factor and shale content. Analogously to gamma ray index, the so-called factor index was defined, which proved to be a good shale indicator. The method gives consistent results providing reliable information in water-bearing sedimentary structures.