Experiments and tests inside the unique KTB-DL boreholes can be performed under very favorable logistical conditions. Because there is no more rig time to be considered, even long-term experiments may be carried out at low costs.
Facilities needed for standard logging operations are provided by GFZ. The logging infrastructure comprises two logging winches, logging sondes, diverse cable heads & cross-overs, and a complete workshop specialized for logging sonde . The two available winches bear 7-conductor logging cables with length of 3600 m and 4500 m. The mechanical workshop can be used with the assistance of a GFZ logging engineer. The power supply is 240 V or 400 V/50 Hz (standard in Germany).
Access to the KTB-DL site on public roads is possible for all kinds of vehicles. The nearest highway access is just 5 kilometers away. The next city with international airport is Nürnberg, at a distance of about 1.5 hour driving. The airport of Munich is at about a 3 hours driving distance, Berlin and Frankfurt at 4 hours, figure 7. In the adjacent small towns of Windischeschenbach and Erbendorf and in the surroundings there are several small countryside hotels of various categories. The climate is humid and generally cold in winter (-5°C) and moderate in summer time (+15°C).
The impressive industrial monument of the 83 m tall drill rig is nowadays partially used for downhole logging. Apart from that the drill rig is completely deactivated.
Except for the drill rig all drilling equipment and the facilities of on-site geoscientific field laboratory were dismantled in 1995. The cores gained during the KTB drilling phase are stored in a core repository at the adjacent ''Geo-Zentrum an der KTB', see www.geozentrum-ktb.de.
During the more than seven years duration of the KTB project more than 200 different logs and tests were carried out. Most of the acquired data is available online.
An overview of the experiments performed at KTB-DL between 1996 and 2006 is here.
Use of the infrastructure including the boreholes is free of charge to academic research institutes. The experienced GFZ personnel will assist in planning and execution of experiments. Because the KTB-DL is not permanently crewed, each project has to cover the travel costs of GFZ personnel from Potsdam. Furthermore costs for consumables, third-party services and electricity & water if these will exceed normal consumption.
Commercial users, e.g. service companies, sonde manufacturers etc., will be charged depending on duration and depth of the KTB borehole use.
Am Bohrloch 2
Click on the left site "Data"