GeoZS has been carrying out geophysical measurements in wells and boreholes for decades. In the brochure Geophysical measurements in boreholes - Carotation measurements we present the possibilities of our most important devices, which are constantly updated by our experienced carotation team.

Using different probes and combinations of probes, we can continuously and very precisely determine the geometry, deviation and azimuth of the borehole and its passage, the condition and properties of the pipes and philtres (looking for signs of corrosion and mineral precipitation, bacterial films, collapses or foreign bodies in the borehole) and the quality of the cementation. In this way, we can assess the quality of the drilling work carried out during and after the construction of the installation and at the same time, through systematic inspections every few years, assess the need for possible rehabilitation of the installation.

During or after drilling, it is possible to characterise the rock composition of the entire drilling profile with high precision and continuity, determine the permeable zones through which the groundwater flows into or out of the borehole, measure the groundwater level, the point of gas evolution in the borehole (e.g. CO2), the temperature gradient, the physico-chemical properties of the water or take an intact sample at the desired depth.

The most commonly used and favourite equipment is the video camera, which enables visual inspection and video recording. In geotechnical engineering, however, the use of optical and acoustic viewing devices has recently become more common.

All probes are capable of taking measurements at depths of up to 1000 metres and at temperatures of up to approx. 60°C.

To find out how you can measure your wells and boreholes, contact: andrej.lapanje@geo-zs.si.

Authors: Simon Mozetič, Tomislav Matoz, Andrej Lapanje, Nina Rman

Year of publication: 2020

• Brochure (PDF, 4 MB)