DGR™ Dual Gamma Ray Sensor


The DGR™ tool provides accurate LWD natural gamma ray logs with Sperry Drilling services' proven reliability. The DGR sensor is an integral part of Sperry's LWD services, which include gamma ray, resistivity, neutron porosity, spectral density, dipole sonic, formation tester and caliper measurements. It can also be combined with directional surveying and drilling efficiency tools, such as the pressure-while-drilling (PWD) and DDSr™ drillstring dynamics sensors.


  • Correlation
  • Shale volume calculation
  • Casing/coring point selection
  • Geosteering

SOLAR: this sensor also exists in the high temperature/high pressure version. Please check the sensor datasheet for exact specifications. 

DGR™ Dual Gamma Ray Sensor

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