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Wody termalne w rejonie Jędrzejowa : zasoby energetyczne i możliwości wykorzystania

Wielgus K., Barbacki A., Pająk L.

Przegląd Geologiczny

2018

Vol. 66, nr 2

118--126

The present study examined the possibility of using geothermal energy in the area of Jędrzejów. Determination of the potential of thermal resources in this area was possible due to deep boreholes drilled in previous years. The analysis concerned the assessment of the geological setting, depth of aquifers, water temperature and mineralization, discharge rates of wells, reservoir parameters, and the value of geothermal resources. Promising zones for acquiring geothermal energy are the central (Cenomanian and Upper Jurassic aquifers) and north-eastern parts (Trias- sic aquifer) of the area. Taking into account discharge rates of wells and water temperature, the geothermal resources of the region are promising mainly in the context of their use in recreation and/or balneotherapy. There is a certain possibility of developing the resources for heating purposes, but generally this option would require using of heat pump systems. Based on the calculated value of the energetic potential of the aquifers, the Cenomanian aquifer has been selected as the most interesting. For this aquifer, a simple scheme of geothermal pool installation was proposed.

Podział skały zbiornikowej na jednostki o jednakowych właściwościach hydraulicznych w celu dokładniejszego wyznaczania przepuszczalności podczas modelowania przepływów w złożu gazu

Jarzyna J., Ha Quang M.

Przegląd Geologiczny

2009

Vol. 57, nr 11

996-1003

Petrophysical parameters such as porosity and permeability and bulk density are input data for modeling hydrocarbon flow in reservoirs with the use of Eclipse® program (Schlumberger). The modeling is preceded by preliminary works comprising division of reservoir into hydraulic (flow) units, HU, and their characterization by geometrical and geological factors. Flow Zone Index, FZI, is a factor enabling easier description of movement of media in pore space only on the basis of combination of permeability and porosity. Then, HUs are determined on the basis of FZIs. The tested gas deposit belonged to a group of typical Miocene reservoirs from the Polish part of the Carpathian Foredeep. In this deposit, gas accumulations are related to deltaic sediments represented by sandstone and mudstone layers of various thickness, and heterolites with claystone, mudstone and sandstone intercalations. In the case of this deposit, the wealth of laboratory data made possible credible differentiation of FZI and HU. The tested methodology can also be applied to investigations of reservoirs bearing potable, mineral and geothermal water as well as those used for storage of sequestrated carbon dioxide.