| Authors |
Branislav FRICOVSKY, Ladislav VIZI, Klement FORDINAL, Radovan CERNAK, Katarina BENKOVA, Daniel MARCIN, Marta KALABOVA, Jana FRICOVSKA |
| Abstract |
The Liptov Basin is among most developed geothermal water bodies in Slovakia, with 5 active sites producing low enthalpy geothermal waters from 9 active wells. Though the most recent in Liptovský Mikuláš has not been evaluated yet, the proven reserves count 32 MWt with a respective deliverability of 288 kg.s-1. For both, the regionalized recovery factor and definition of a McKelvey scheme, the Monte Carlo simulation was applied to the effective reservoir volume and the USGS volume method respectively. The regionalized recovery factor yields R0 = 0,021 – 0,125 with R0 = 0,061 as a mean to the P50(R0) – P90(R0) interval. Following a concept of sustainable reservoir production, as presented by prof. Axelsson and his team since 2001, the McKelvey scheme was constructed for a period of 100 years and 40 years, terming the sustainable and amortized life-time interval. For the first case, the total (probabilistic) thermal potential equal to P50(E0) is assessed for TTP(p) = 66 MWt. Applying the reserve capacity ratio approach, setting the rcap = 0,5 as critical sustainable reservoir capacity rate, this counts Pth(S) = 33 MWt. Projecting the cyclic production regime, with a thermal output in a range of Pth,ref = 6,7 – 13,6 MWt within 2011 – 2022 period, and a normalized mean of Pth,ref* = 10 MWt, the developable potential is assessed for Pth(D) = 20 MWth, as cumulative for both reservoir units, or Pth(D) = 69 MWt for 40 years of production respectively. This accounts the Liptov Basin as one of most prospective for further development, still under considerably sustainable conditions |