Micro seepage from hydrocarbon reservoirs occur by nearly vertical ascent of colloid-size microbubbles of light hydrocarbons (methane through the butanes) through a network of interconnected groundwater-filled joints, fractures, and bedding planes.
Chemical and/or bacterial degradation of micro seeping hydrocarbons instigates digenetic changes that alter the near-surface concentration of the natural radioactivity (uranium, potassium and thorium).
Uranium’s contribution to the surface radiation flux found over petroleum deposits, can be expected to be less than that found over hydrocarbon-barren areas.
When the gas is a low molecular weight hydrocarbon, its leakage through the surface is generally detectable, supporting the concept of vertical migration.
Originating within either dome-type reservoirs or stratigraphic traps, these gases reach the surface via micro seeps.
When hydrocarbons are present, however, geochemical interactions constrain arrest uranium’s movement, causing the decrease in gamma flux detected over petroleum deposits.
RDM Radiometry technologies can detect and measure the intensity of Gamma Ray. The formations with high radioactive are shale’s and those with a low radioactive, are maybe potential oil bearing zones.
Potassium, uranium and thorium emit gamma-rays with specific energies during their decay sequence. The gamma-ray spectrum is measured using crystals that scintillate during a gamma-ray interaction.
Thus, the goal of RDM Radiometry in hydrocarbon exploration is to search for such nonrandom low radiation patterns over explored and un-explored terrain.
The radiometric survey was executed Runnel County, approximately 2 Mi NW of Winters, Texas, and 196 Mi SW of Dallas.
The covered target area is located approximately 160 Mi North-East from Dallas and ~9 Mi north-East from Electra.