Confidence in your gamma logging at a lower cost.

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Driller-Operable Geophysics

In-field Geoanalysis

Downhole Navigation

Structural Geology

Drilling Optimisation

The cost of having a trained technician on site to perform your gamma logging in order to identify the rock type and geological correlation, is substantial.

As is the time required for the technician to travel to site, together with the logging truck, to perform the task. Now, using the REFLEX EZ-GAMMA™, drilling crews or geologists can perform the same task as efficiently, accurately and easily as they would any survey or core orientation.

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The REFLEX EZ-GAMMA™ is an intelligent, sub-surface instrument used to determine lithology and geological correlation through the measurement of natural gamma radiation (NGR) over the span of the borehole.

It is a self-contained natural gamma sensor that continuously measures and records natural gamma counts to an internal memory for processing at the surface.

The probe is lowered into the hole by means of a rig winch located at the collar of the borehole and then returned to the surface whilst measurements are being recorded.

The ease of use of the REFLEX EZ-GAMMA™ allows on-site technical staff to simply and accurately gamma log historic holes without the need for high-cost, traditional gamma logging by means of a logging truck.


  • Size
  • Ø25 mm x 165 mm


  • Probe: ambient air temperature
  • 0ºC to +70ºC
  • Battery
  • >0ºC to +70ºC
  • Depth encoder
  • -20ºC to +85ºC


  • Depth encoder
  • < 3 kg, with parts 5.2 kg
  • REFLEX EZ-GAMMA™ probe and running gear
  • <15 kg (excluding pelican case)


  • REFLEX EZ-GAMMA™ probe and running gear
  • <3 m


Download REFLEX EZ-GAMMA™ Brochure – English

Download REFLEX EZ-GAMMA™ Brochure – Spanish

Case study

REFLEX reaches new heights as its EZ-GAMMA successfully logs to new and extreme depths at the KCGM Super Pit in Kalgoorlie