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In 2016 Pasztor and Schultz[1] proposed an analytical method for calculating a perforation designпїЅs effect on hydrocarbon-well inflow, using a new concept to analyze the effect of the shape of the perforation channelsпїЅ drainage area. The method compares well with standard industrial methods used to calculate the pressure drop caused by a given perforation design. In 2017 Toth and Pasztor[2] applied their model to investigate geothermal-well inflow, and achieved promising results. The modelпїЅs complexity makes...

Hungary is well known for its geothermal potential, used mostly for spas. Where geothermal is used for energy production, it is mostly in the form of a direct heat supply for heating housing projects and businesses. Currently, no geothermal power-plant is operating in Hungary. Neither is the ground-source heat-pump market very strong, maybe because of HungaryпїЅs depressed economy, which still hasnпїЅt recovered from the global recession. All the same, a few large-scale projects are underway. Their realization is ...