| Title | Steam-Productive Wells in South-Eastern Part of Hungary |
|---|---|
| Authors | Sandor Pap |
| Year | 1999 |
| Conference | European Geothermal Conference |
| Keywords | Pannonian Basin, geothermal energy, wet-steam production, high enthalpy reservoir |
| Abstract | Hungary has a favourable geothermal position with regard to the geological conditions. The reason is the thinning of the crust and the lithosphere below the Pannonian Basin. Because of this the convection and the geothermal gradient are higher than the world average. The basin parts of Hungary were filled by Neogene sediments with relatively poor thermal conductivity. The Precambrian-Paleozoic-Mesozoic rocks, which have been found deeper (in some places at the depth of 700Gm) can be caractenzed ' as having merent thermal conductivity. For this reason and because of the convection the temperatures of the Neogene basement rocks are different. From the basement rocks - from relatively low depth- we can get wet-steam production. The most suitable rocks for steam production are the carstificated formations and the brecciated rocks of the tectonic zone and its surroundings The reservoir pressure may be twice as much as the hydrostatic pressure. The practical proof are the four steam-productive wells in South-East part of Hungary which were drilled in the programme for oil and gas exploration. The exploration activity has continued since the 1920's in the Great Hungarian Plain. These wells are: T6tkoml6s (T)-14, Almosd-13, NagyszknL (Nsz> 3, F6bihsebestykn ( F i b p . |