Gamma Ray Tool (GRT)
Applications
· Lithological identification
· Depth correlation
· Identification of radioactive scale
· Tracer monitoring
· Gravel pack monitoring (with an addition gamma source)
The Gamma Ray Tool (GRT) measures the natural gamma rays generated from the formation that surrounds the wellbore. The sensor comprises a 4" sodium iodide scintillator, a photomultiplier and a 1.6kV high voltage power supply. The GRT is compactly designed and offers good sensitivity and high resolution for use in cased-hole production logging operations. The GRT, combined with other tools, may be used for flow tracer work and, with the addition of a gamma source, for gravel pack investigations.
