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Drilling progressing well for Dorfen geothermal project in Icking, Bavaria/ Germany

Drilling rig on site of Dorfen project, Icking/ Bavaria (source: Erdwaerme Isar)
Alexander Richter Alexander Richter 20 Nov 2018

Drilling is progressing successfully for the Dorfen geothermal heating project in Icking in Bavaria/ Germany. First results are expected before the end of the year.

The developer of the Dorfen geothermal project in Icking, Erdwaerme Isar – is pleased with the progress made on the drilling campaign. “It’s going very well,” explains spokesperson Dr. Jochen Schneider. “There have been no delays and no problems.” Since the start of drilling at the end of June, a distance of over 4,000 meters has been covered on the way down, with a deflection at a depth of 3,700 meters towards the Höhenrain – a relatively demanding operation. Finally, we have drilled through a 400 -meter thick layer of Cretaceous earth. These limestone and sandstones were deposited about 100 million years ago during the late dinosaur era.

“We have now reached the surface of the deep groundwater reservoir,” says Schneider. Now it is only a few hundred meters, then we expect to have arrived at the target zone. If sufficient hot water for power generation will be found will be shown with the drilling results expected to be available shortly before Christmas.

The slight delay – actually the result was planned for November – explains Schneider with the current boom in the oil industry. “Not every accessory is currently available,” he explains. In general, a geothermal well is logistically much more demanding than a solar system or wind turbine. “Different disciplines have to work together here,” he explains. The short delay in the timetable is “not wild”.

Meanwhile, the district council of Ickingen unanimously rejected that lines for the injection drilling rig in Walchstadt – where the extracted water is returned to earth after the heat has been removed – are laid above ground on church grounds. As Mayor Margit Menrad explained, Erdwaerme Isar GmbH needs a connection to the municipal water and waste water network for the supply and disposal of the injection drilling station. On September 24, the municipal council had approved a connection in principle, but in underfloor transfer. The developer justified its desire to lay the lines above ground, that an agreement with a landowner is not expected for the foreseeable future. Furthermore the water piping would also be heated against frost.

The councils argued in their recent meeting against an above-ground relocation. They want to stick to the underfloor laying. The local politicians feared dangers from falling trees or even vandalism. In addition, the committee wonders why the pipes will have to be heated.

Source: Merkur