Comparative analysis of rock porosity in a selected region in the Carpathians based on laboratory data and well logs

A comparative analysis of porosity is presented in the article. This was calculated from laboratory measurements and well logs for rocks from a selected region of the Carpathians. Analysis was performed for samples of sandstones, mudstones, shales and carbonates from four boreholes drilled in the Ca...

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Bibliographic Details
Published in:E3S web of conferences 2017-01, Vol.24, p.2002
Main Authors: Barnaś, Maciej, Puskarczyk, Edyta
Format: Article
Language:English
Subjects:
Boreholes
Carbonates
Comparative analysis
Helium
Laboratories
Mathematical analysis
NMR
Nuclear magnetic resonance
Porosity
Pycnometry
Rocks
Sandstone
Shales
Well logs
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Summary:A comparative analysis of porosity is presented in the article. This was calculated from laboratory measurements and well logs for rocks from a selected region of the Carpathians. Analysis was performed for samples of sandstones, mudstones, shales and carbonates from four boreholes drilled in the Carpathian Foredeep region near Krakow, Poland. In laboratory measurements, porosity was assessed using two methods: helium pycnometry and nuclear magnetic resonance (NMR). Porosity from well logging was calculated from sonic profiling (SPHI). Cross-plots were used, which allowed for the assessment of the degree of correlation between the laboratory and well log data. The results obtained were analysed paying special attention to the relationship with geological structure. Based on the lithological criterion, the correlations turned out to be strong. The repeatability of the results obtained in different wells was verified. The results of the measurements are significant in relation to estimating porosity from well logs using laboratory data.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/20172402002