CBG Corp, state-of-the-art logging tools and sensors

NGT-T Gamma Tool Specifications

for Geosteering and MWD

Overview | Specifications

The CBG NGT-T Gamma tool has become the industry standard for Geosteering and MWD applications, with over 1200 tools currently operating worldwide!

CBG Corp. NGT-T Gamma Ray Tool: Click for larger image.
NGT-T Specifications
w/out housing assembly with 24″ housing assembly
Application Geosteering/ MWD Geosteering/ MWD
Mechanical
Diameter (OD) 1.36″ 1.875″
Length (make up) 13.6″ 34.05″
Weight 1.7 lb. 15.0 lb.
Operating Temperature -77 to +350 °F. -77 to +350 °F.
End Connectors MDM 15-Pin 200 °C, 10-Pin GE
Material Aluminum Alloy BeCu
Pressure NR 18,000 PSI
Performance
Sensitivity 2.0 Counts per API 1.7 Counts per API
Accuracy +/- 5% to 300°F.
+/- 10% to 350°F.		 +/- 5% to 300°F.
+/- 10% to 350°F.
Thin-Bed Resolution (In 8″ hole diameter, at 50% points) 6.8″ 6.8″
Environmental
Survival Temperature 400°F. 400°F.
Max Heat/Cool rate 5°F./Minute 5°F./Minute
Vibration (3 axis)
50-300 Hz
Random spectrum		 30 G. RMS 30 G. RMS
Shock (Z-axis) 500 G., 0.5 mS. 500 G., 0.5 mS.
Shock (X or Y-axis) 1000 G., 0.5mS. 1000 G., 0.5mS.
Power Requirements
Input Voltage 22-30 Volts 22-30 Volts
Input Current 18-14 mA. (constant power) 18-14 mA. (constant power)
Maximum Voltage 31.5 Volts 31.5 Volts
Output Signal
Negative Pulse +5 volts to GND
1.5 to 3.5 uS		 +5 volts to GND
1.5 to 3.5 uS