Geothermal Resources Recognition and Characterization on the Basis of Well Logging and Petrophysical Laboratory Data, Polish Case Studies

Jadwiga A. Jarzyna, Stanisław Baudzis, Mirosław Janowski and Edyta Puskarczyk
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Jadwiga A. Jarzyna: Faculty of Geology Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Krakow, Poland
Stanisław Baudzis: Geofizyka Toruń S.A., 87-100 Toruń, Poland
Mirosław Janowski: Faculty of Geology Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Krakow, Poland
Edyta Puskarczyk: Faculty of Geology Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Krakow, Poland

Energies, 2021, vol. 14, issue 4, 1-26

Abstract: Examples from the Polish clastic and carbonate reservoirs from the Central Polish Anticlinorium, Carpathians and Carpathian Foredeep are presented to illustrate possibilities of using well logging to geothermal resources recognition and characterization. Firstly, there was presented a short description of selected well logs and methodology of determination of petrophysical parameters useful in geothermal investigations: porosity, permeability, fracturing, mineral composition, elasticity of orogeny and mineralization of formation water from well logs. Special attention was allotted to spectral gamma-ray and temperature logs to show their usefulness to radiogenic heat calculation and heat flux modelling. Electric imaging and advanced acoustic logs provided with continuous information on natural and induced fracturing of formation and improved lithology recognition. Wireline and production logging were discussed to present the wealth of methods that could be used. A separate matter was thermal conductivity provided from the laboratory experiments or calculated from the results of the comprehensive interpretation of well logs, i.e., volume or mass of minerals composing the rocks. It was proven that, in geothermal investigations and hydrocarbon prospection, the same petrophysical parameters are considered, and well-logging acquisition equipment and advanced methods of processing and interpretation, developed and improved for almost one hundred years, can be successfully used in the detection and characterization of the potential geothermal reservoirs. It was shown that the newest (current investment)—as well as the old type (archive)—logs provide useful information.

Keywords: geothermal waters; measurement methods and interpretation results in well logging; reservoir properties of rocks; porosity; natural and induced fracturing; radiogenic heat; thermal conductivity; heat flux and temperature modelling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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