Well logging

The borehole geophysics is the branch of geophysics, whose subject is the study of drill core and the surrounding terrestrial body. These special downhole gauges are used, which are inserted into the borehole.

In the boreholes lithological, petrophysical, reservoir- technical properties and gefügekundliche and Drilling Engineering data is recorded. It mainly geoelectric, magnetic, acoustic, radar, and radioactivity used methods are used. The well logs are the most important methods of measurement in deep wells and have the time and cost- intensive kernels of Bohrstrecken largely replaced.

The measurement diagrams (logs ) are used by correlation with the Meßbefunden of neighboring holes for stratigraphic subdivision. Of particular importance are the borehole measurements in detecting and identifying deposits (eg oil or gas zones). In addition, can be derived from the measurement diagrams the reservoir geological parameters derive and interpret ( thickness, rock porosity, hydrocarbon saturation). Areas of the method has also in the monitoring of deep wells for drinking water supply, in geothermal energy in the energy sector as well as for thermal water extraction.