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Electrofacies as a Tool for the Prediction of True Resistivity Using Advanced Statistical Methods—Case Study

Author

Listed:
  • Stanisław Baudzis

    (Geofizyka Toruń S.A., 87-100 Toruń, Poland)

  • Joanna Karłowska-Pik

    (Faculty of Mathematics and Computer Science, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland)

  • Edyta Puskarczyk

    (Faculty of Geology Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Kraków, Poland)

Abstract

Statistical analysis methods have been widely used in all industries. In well logs analyses, they have been used from the very beginning to predict petrophysical parameters such as permeability and porosity or to generate synthetic curves such as density or sonic logs. Initially, logs were generated as simple functions of other measurements. Then, as a result of the popularisation of algorithms such as the k-nearest neighbours (k-NN) or artificial neural networks (ANN), logs were created based on other logs. In this study, various industry and general scientific programmes were used for statistical data analysis, treating the well logs data as individual data sets, obtaining very convergent results. The methods developed for processing well logs data, such as Multi-Resolution Graph-Based Clustering (MRGBC), as well as algorithms commonly used in statistical analysis such as Kohonen self-organising maps (SOM), k-NN, and ANN were applied. The use of the aforementioned statis-tical methods allows for the electrofacies determination and prediction of an Rt log based on the other recorded well logs. Correct determination of Rt in resistivity measurements made with the Dual Laterolog tool in the conditions of the Groningen effect is often problematic. The applied calculation methods allow for the correct estimation of Rt in the tested well.

Suggested Citation

  • Stanisław Baudzis & Joanna Karłowska-Pik & Edyta Puskarczyk, 2021. "Electrofacies as a Tool for the Prediction of True Resistivity Using Advanced Statistical Methods—Case Study," Energies, MDPI, vol. 14(19), pages 1-18, September.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6228-:d:646974
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    References listed on IDEAS

    as
    1. Jadwiga A. Jarzyna & Stanisław Baudzis & Mirosław Janowski & Edyta Puskarczyk, 2021. "Geothermal Resources Recognition and Characterization on the Basis of Well Logging and Petrophysical Laboratory Data, Polish Case Studies," Energies, MDPI, vol. 14(4), pages 1-26, February.
    2. Edyta Puskarczyk, 2020. "Application of Multivariate Statistical Methods and Artificial Neural Network for Facies Analysis from Well Logs Data: an Example of Miocene Deposits," Energies, MDPI, vol. 13(7), pages 1-18, March.
    3. Ewa Krogulec & Katarzyna Sawicka & Sebastian Zabłocki & Ewa Falkowska, 2020. "Mineralogy and Permeability of Gas and Oil Dolomite Reservoirs of the Zechstein Main Dolomite Basin in the Lubiatów Deposit (Poland)," Energies, MDPI, vol. 13(23), pages 1-17, December.
    Full references (including those not matched with items on IDEAS)

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