NGT-T2 Gamma
The Giant Leap forward the drilling industry has been waiting for!
NGT-T2
Ruggedized, Non-Directional Gamma Tool (1.36” OD)
The NGT-T2 is the next generation of downhole directional drilling gamma sensor technology. It’s a complete electrical and mechanical redesign of our industry standard NGT-T Gamma Tool.
After the 30-year success of our legacy NGT-T, the NGT-T2 is designed to become the new workhorse of the industry to carry it forward for decades to come. The NGT-T2 touts a 25% higher vibration (25 GRMS) specification than the NGT-T and other competitor tools on the market, as well as a higher temperature rating (182°C) and wider input voltage range (10v-50v, 60v Max).
Electronics and Single-Board Design
The NGT-T2 contains CBG’s new single-board design. The board is encapsulated and cushioned within pre-molded pads that provide superior shock and vibration protection, eliminating potential thermal expansion of flowed potting materials around and under electronic components.
The thru-wires in the NGT-T2 are fully enclosed under metal lids to improve reliability and external noise isolation. The lids also protect the wires from being abrased or broken during handling or when removed from pressure barrels.
Compatibility and Upgradeability
The NGT-T is designed for compatibility with Tensor style MWD system specifications, and contains 15-pin high temperature Micro-D Subminiature (MDM) connectors on the top (male pin) and bottom (female socket). All 15 wires pass through the tool from top to bottom connectors. The gamma tool utilizes three wire connections, Pin1 (GND), Pin4 (DC Power) and Pin8 (Signal Out).
The NGT-T2 is also easily upgradable to the even higher 190°C temp NGT-HTR Gamma Tool.
To protect your gamma investment and ensure the best performance use CBG original MWD Shock/Vibration Isolator.
NGT-T2
Ruggedized, Non-Directional Gamma Tool (1.36” OD)
The NGT-T2 is the next generation of downhole directional drilling gamma sensor technology. It’s a complete electrical and mechanical redesign of our industry standard NGT-T Gamma Tool.
After the 30-year success of our legacy NGT-T, the NGT-T2 is designed to become the new workhorse of the industry to carry it forward for decades to come. The NGT-T2 touts a 25% higher vibration (25 GRMS) specification than the NGT-T and other competitor tools on the market, as well as a higher temperature rating (182°C) and wider input voltage range (10v-50v, 60v Max).
Electronics and Single-Board Design
The NGT-T2 contains CBG’s new single-board design. The board is encapsulated and cushioned within pre-molded pads that provide superior shock and vibration protection, eliminating potential thermal expansion of flowed potting materials around and under electronic components.
The thru-wires in the NGT-T2 are fully enclosed under metal lids to improve reliability and external noise isolation. The lids also protect the wires from being abrased or broken during handling or when removed from pressure barrels.
Compatibility and Upgradeability
The NGT-T is designed for compatibility with Tensor style MWD system specifications, and contains 15-pin high temperature Micro-D Subminiature (MDM) connectors on the top (male pin) and bottom (female socket). All 15 wires pass through the tool from top to bottom connectors. The gamma tool utilizes three wire connections, Pin1 (GND), Pin4 (DC Power) and Pin8 (Signal Out).
The NGT-T2 is also easily upgradable to the even higher 190°C temp NGT-HTR Gamma Tool.
To protect your gamma investment and ensure the best performance use CBG original MWD Shock/Vibration Isolator.
NGT-T2 Specifications
P/N 200-200-000
| Detector | Scintillator Crystal | Sodium Iodide, Na(TI) |
|---|---|---|
| Photomultiplier | R3991A (Hamamatsu) | |
| Mechanical | Diameter (OD) | 1.36” |
| Length (make-up) | 13.6” | |
| Weight | 1.7 lb. | |
| End Connectors | Micro-D Subminiature, 15-Pin | |
| Material | Aluminum Alloy | |
| Performance | Sensitivity | 1.14 CPS/API* |
| Accuracy | +/- 5% to 150°C +/- 10% to 182°C** |
|
| Environmental | Operating Temperature | -18°C to 182°C** |
| Survival Temperature (reduced accuracy) | -40°C to 200°C | |
| Heat/Cool Rate, Max. | 2.8°C (5°F) per minute | |
| Vibration (3 axis) 50-1000Hz, Random | 35G (25G RMS)** | |
| Shock (3 axis) | 1000G, 0.5ms, half-sine | |
| Power Requirements | DC Input Voltage | 10v-50v, 60v Max** |
| Tool Current | 8-11 mA | |
| Output Signal | Negative Pulse | +5V to GND, 5 uSec width |
* Counts are collected with gamma tool mounted within a standard BeCu pressure barrel, (OD 1.875″, ID 1.500″). API Calibration performed with AEA Technology, QSA Inc., KUTh Field Verifier #188074, S/N 255 Radionuclides: K-40(11.7%), U-238(90 ppm), Th-232(40 ppm).
** Compare to NGT-T