Gamma Ray Logs

Measurement of the natural gamma rays emitted by various elements in the formation. Gamma ray logs are helpful for quantifying shaliness, well-to-well correlation, depth correlation between open- and cased-hole logs, and for correlation between logging runs.

Note: For wireline services, gamma ray is always included with telemetry.

DGR™ Dual Gamma Ray Sensor
LWD total gamma ray tool with hardware redundancy.
GABI™ Sensor - Gamma/At-Bit Inclination
LWD sensor provides at-bit azimuthal gamma ray and inclination measurements for improved geosteering and optimum well placement.
Hostile Natural Gamma Ray (HNGR™) Tool
Wireline tool records naturally occurring gamma radiation. Gamma ray measurements are used for geologic correlation, depth control, and computing shale and clay volumes. Rated to 500°F and 25,000 PSI.
M5™ Integrated LWD Service
Integrated LWD service provides formation evaluation answers from resistivity and azimuthal gamma ray sensors and drilling optimization answers from vibration and pressure sensors.
Spectral Gamma Ray (CSNG™) Log Service
Wireline tool provides logs of potassium, uranium, and thorium concentrations. Used to provide uranium-free gamma ray reading and to assist in identification of clay types.