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» Record of Spectral Well Analysis.



Records entire spectrum of all natural emitting gamma rays and previously injected isotopes during stimulation (frac). Each isotope energy level, measured in electron volts (KeV), is simultaneously recorded at the surface.

The resulting spectral provides vital data to determine the placement of all frac fluids and/or proppants.

The spectral survey can be observed on a remote monitor while the downhole spectral survey is being recorded. Does not have to retrieve spectral gamma ray from downhole before getting survey results.

Other services recorded on same trip downhole are correlation gamma ray, temperature survey, and collar log for depth control with other surveys.

Isotopes Commonly Used for Tagging

Isotope                 Half-Life                 Gammy Ray

Energy (KeV)

Iridium-192           74 Days                 317,468,604

Scandium -46       84 Days                889,1120

Antimony -124      60 Days                603,1691

Iodine -131           8 Days                  364