A geological investigation consists of a petrophysical, a geophysical and a geochemical analysis. In addition, a comprehensive uncertainty analysis can be carried out.

Petrophysical investigation
Here we analyse and interpret the information available from nearby drilling operations in order to get a clear picture of the reservoir’s characteristics. For this we make use of borehole measurements, core samples and drilling waste analyses.

Geophysical investigation
Apart from the reservoir characteristics, we also look at the sedimentary environment, from which we can predict the continuity of sedimentation and thus the suitability of the stone. In the analysis, we interpret data from existing 2D or 3D seismic surveys in the area surrounding the location. We use this interpretation to make maps of the depth and thickness of the potential layer, and also to show the underground structures and fractures. This is necessary in order to get a good picture of underground structures and an initial indication of suitable locations for wells.

By combining data from the petrophysical analysis with the seismic interpretation, we can make a better estimation of the specific features in the ground beneath the site.

Geochemical investigation
This analysis looks at the composition of the water in the reservoir. Chemical models are used to determine the effect of geothermal techniques on water quality and in particular the chances of precipitation reactions in the water.