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State-of - the - art of thermal water utilization in the TRANSENERGY region: PowerPoint PPT Presentation


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State-of - the - art of thermal water utilization in the TRANSENERGY region: current state, potentials and challenges. Nina Rman 1 Nóra Gál 2 , Daniel Marcin 3 , Katarína Benková 3 , Julia Weilbold 4 , Gerhard Schubert 4 , Tadej Fuks 1 , Dušan Rajver 1 , Andrej Lapanje 1 , Annamária Nádor 2

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State-of - the - art of thermal water utilization in the TRANSENERGY region:

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State of the art of thermal water utilization in the transenergy region

State-of-the-art of thermal water utilization

in the TRANSENERGY region:

current state, potentials and challenges

Nina Rman1

Nóra Gál2, Daniel Marcin3, Katarína Benková3, Julia Weilbold4, Gerhard Schubert4, Tadej Fuks1, Dušan Rajver1, Andrej Lapanje1, Annamária Nádor2

1 Geological Survey of Slovenia

2 Geological and Geophysical Institute of Hungary

3State geological Institute of Dionýz Štúr, Slovakia

4 Geological Survey of Austria

Vienna, 24.6.2013


State of the art of thermal water utilization in the transenergy region

Aimofthisoverview

  • geothermal energy utilization in the project area (year 2011)

  • recognition of possible transboundary aquifers

  • impact of exploitation on regional hydrogeological conditions

  • potential for increased exploitation

  • challenges of sustainable geothermal energy utilization


Geothermal energy resource

Geothermal energy resource


State of the art of thermal water utilization in the transenergy region

What is so specialabout

regionaland transboundary waterresouces?

DRAWDOWN

(http://pubs.usgs.gov)


State of the art of thermal water utilization in the transenergy region

Thermalwaterusers

Twellhead > 20°C


State of the art of thermal water utilization in the transenergy region

Maximumwellhead temperature

Twellhead (°C)


State of the art of thermal water utilization in the transenergy region

Thermalwaterutilization

Foto: S.M., K.M., T.F.

Bathing and balneology

Heating


State of the art of thermal water utilization in the transenergy region

Thermalwaterutilization

P = 180 kWe net T = 110°C

Q = 20 l/s M = 18 g/l


State of the art of thermal water utilization in the transenergy region

Exploitedgeothermalaquifers

11 different aquifers

0.5 to 2 km depth

Q = 10-35 l/s

high abstraction →

pump failures due to

sand clogghing

Q = 5-10 l/s

lots of H2S,CO2→ carbonates scaling →

inhibitors

Q = 20-30 l/s

lots of CO2→ carbonates scaling →

inhibitors


State of the art of thermal water utilization in the transenergy region

Monitoring ofgeothermalwells

Groundwater level monitoring

  • Groundwater level (m)

  • Momentary yield (l/s)

  • Cumulative quantity (m3)

  • Water temperature (°C)

  • Chemical monitoring

  • Identify anomalous changes

  • Sustainable management

  • Benchmarking indicators


State of the art of thermal water utilization in the transenergy region

Thermalwaterproduction


State of the art of thermal water utilization in the transenergy region

Exploitationcharacteristics


State of the art of thermal water utilization in the transenergy region

Wastethermalwatermanagement

sewage


State of the art of thermal water utilization in the transenergy region

Futuregeothermaldevelopment

  • Technical potential

  • 65 inactive users

  • 94 inactive wells

    • +7 mio m3annually:

  • Upper Miocene clasticrocks: +2.8 million m3

  • MZ carbonates: +1.7 million m3

  • Others: app. + 2.8 million m3


  • State of the art of thermal water utilization in the transenergy region

    Futuregeothermaldevelopment

    Hydrogeological potential

    regional and transboundary aquifers

    → interferences → numerical models


    State of the art of thermal water utilization in the transenergy region

    Futuregeothermaldevelopment

    • Legislative potential

    • Applications foror granted water concessions (AT, SI, SK):

      • +30 mio m3 annually

      • Heat extraction:

      • reinjectionwithdoublets

      • Management of resources:

      • benchmarking


    State of the art of thermal water utilization in the transenergy region

    Conclusions

    • Utilization status in 2011 : 148 users with 307 active wells

    • Low temperature resources: direct use and 1 binary electricity power plant

    • 2 most favourable geothermal aquifers: MZ carbonates & Upper Miocene sand

    • Indications of overexploitation

    • Cascade use: improves thermal efficiency and reduces water demand

    • Inactive geothermal wells

    • Low and intermediate temperature potential for new drillings

    • Limited hydrogeological potential can be expanded by reinjection

    • Monitoring system: comparable and systematic, public data

    • Sustainable development: pilot models, benchmarking and strategy paper


    State of the art of thermal water utilization in the transenergy region

    Interactive webmaps and database of users

    Thermal water temperature and

    surface heat flow density

    http://transenergy-eu.geologie.ac.at/

    http://akvamarin.geo-zs.si/users

    Wellbore database

    Geological maps

    Utilization maps

    Geothermal maps

    Combination of layers

    !!! Scale !!!!

    Temperature at 1000 m and thermal water users

    Most tapped geothermal aquifers and

    extent of the Upper Miocene sand


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