The Helium originates from the radioactive decay of chemical elements such as Uranium and Thorium present in the minerals of sedimentary rocks. The Helium travels from the crystalline basement, migrating to the surface and as it is a tiny particle, penetrates even the most efficient seals.

 

On image A, where there is no hydrocarbon deposit, Helium diffuses and reaches the surface at very low levels of concentration. On image B, when there are oil and/or gas reservoirs, due to its solubility (see tab Scientific Principles/Solubility), Helium acummulates on this reservoirs, thereafter, reaches the surface at a greater concentration. This difference of Helium concentration with and without hydrcarbons is one of the scientific principle that enables AGI's technology.

 

As the Helium is a noble and inert gas, it must be analyzed in real time in situ (impossible in labs). Thus, the first stage of the Helium survey is the measurement of its flow on the surface and sub-surface (see tab Technology/Acquisition).