Density Gamma Probe
GeoLog Pty Ltd
Principles of Measurement
The probe contains a gamma source and two high-sensitivity scintillation gamma detectors. Gamma radiation from the source is backscattered by the formation (Compton effect) and reaches the two detectors where the relative count-rates provide a measure of formation bulk density.
Long-spacing detector (LSD) for deep penetration and immunity from borehole effects.
High-resolution detector (SSD) for accurate bed-boundary detection.
Bed-resolution detector (BRD) for shallow penetration and borehole effects.
Long-spacing density (LSD)
High-resolution density (SSD)
Bed Resolution density (BRD)