Soil gas data acquisition is essential for the initial identification and preliminary quantification of natural hydrogen presence. However, these readings may be skewed by atmospheric air contamination, resulting in elevated nitrogen and CO2 readings in the probes. 

Drilling shallow wells for more objective readings of hydrogen concentrations, along with the GC and isotopic geochemistry adds a lot to the license acreage prospectivity picture.

Shallow drilling campaign may also be used for obtaining samples for soil degassing tests.