Geothermal Energy Development in Szentlorinc and Miskolc, Hungary
Mannvit is currently involved in an extensive geothermal energy development program in Hungary. The developer of the program is the privately owned PannErgy of Hungary, with Mannvit supplying technology, engineering and geosciences consulting, procurement, site supervision and project management (EPCM). When complete, the project will provide heating to at least 70,000 homes throughout Hungary and offer a new future source of electricity.
Since the project was initiated in 2006, Mannvit has completed geological and geophysical testing of potential geothermal areas all across Hungary, followed by detailed measurements and research at specific locations to determine actual well locations. Site-specific work has included well design and drilling supervision as well as EPCM delivery of complete systems for operation.
The Szentlorinc Heat Plant
Following the drilling of a successful 1,820 meter deep production well in September 2009, and later another effective well for reinjection, Mannvit commenced on an EPCM project for PannErgy to deliver a fully functioning geothermal heat plant in the town of Szentlorinc in Southwest Hungary. The technical handover and startup of the geothermal heating plant was completed on December 29, 2010. The new geothermal loop replaces an earlier natural gas based boiler system. It will produce 3.2 MWth of thermal energy to ensure the heating and hot water demand for most of the homes in Szentlorinc, and has excess capacity for further expansion.
Miskolc geothermal development
In September 2010, a production well was drilled near Miskolc, Hungary. The Miskolc well is also a part of a geothermal development project Mannvit has been working on as a consultant for PannErgy. The well confirmed a geothermal resource as predicted in tests and analysis done by Mannvit and is classified among the best low temperature wells in mainland Europe. The well is approximately 2 kilometers deep and will supply approximately 70 to 90 l/second and 100°C hot water. The result of the drilling significantly exceeds PannErgy’s former conservative expectations, being roughly three times larger than initially expected. This discovery was made possible by utilizing different geophysical and geological information to determine the well location. The drilling was targeted by integrating natural source electromagnetic (AMT/MT) with seismic and stratigraphic information.
Mannvit services
- Evaluation of all potential geothermal areas in Hungary (database contains 7,000 wells)
- Audio magnetotelluric surveys, magnetotelluric soundings, and gravity surveys of 460 km of MT lines and 1900 gravity stations
- Seismic interpretations to locate geothermal wells
- Integrated interpretation of all geological and geophysical data in Southwest Hungary, resulting in detailed well siting reports on the 27 most favorable areas
- By integrating well data, seismic data, AMT/MT and gravity data, clearer and more transparent interpretation results were achieved
- Compiling of the necessary licensing documents and serving/managing of the licensing processes
- Geothermal field development plan for the Miskolc area
- EPCM delivery of Szentlorinc geothermal heat plant