HUNTER Gamma Module
This high accuracy / sensitivity gamma ray logging tool is flexible enough to operate in two variants; standard 360° module and focused module. Offering Gamma Ray and Azimuthal readings this system in its Azimuthal configuration can be used to not only differentiate between shale and reservoir rock, but to also determine whether the wellbore has exited out of the top or bottom of the reservoir.
A 3-axis vibration sensor optimizes drilling by logging vibration data. Hunter Gamma can be used in HPHT wells up to an operating range of 175° C temperature and 20,000 psi pressure.
Features:
- Greater depth ofinvestigation
- Best Gamma Ray Logging tool forgeo-steering
- Pick casing and coring points by determining formationtops
- 8″ verticalresolution
- High accuracy and sensitivity up to 0.6 counts perAPI
- 3-axis VibrationSensor
- 360° Gamma readings; 200° C survivaltemperature
Geological Applications:
- Determine shalevolume
- Depthdetermination
- Well offsetcorrelation
- Lithologyidentification
- Estimate clay content in sands andlimestones
MECHANICAL
| Diameter | 1.36" w/o housing | 1.875" w/ housing | 1.36" w/o housing | 1.875" w/ housing |
| Length (make up) | 13.6" w/o housing | 41" w/ housing | w13.6" w/o housing | 41" w/ housing |
| Weight | 1.7 lb w/o housing | 21 lb w/ housing | 3 lb w/o housing | 22.3 lb w/ housing |
| Operating Temperature | -60° C to 175° C (-77° F to 350° F) | -60° C to 175° C (-77° F to 350° F) |
| Material | BeCu | BeCu |
| Pressure | 20,000 psi | 20,000 psi |
PERFORMANCE
| Sensitivity |
2.0 Counts per API w/o housing 1.7 Counts per API w/ housing |
0.6 Counts per API |
| Accuracy | +/- 10% to 175° C (350° F) | +/- 10% to 175° C (350° F) |
| Resolution | 6.8” | 6.8” |
ENVIRONMENTAL
| Survival Temperature | 200° C (400° F) | 200° C (400° F) |
| Max Heat/Coo | -15° C (5° F) / Minute | -15° C (5° F) / Minute |
|
Vibration (3 axis) 50-300 Hz Random |
30 G 30 G |
30 G 30 G |
| Shock (Z-axis) | 500 G, 0.5 mS | 500 G, 0.5 mS |
| Shock (Y-axis) | 1,000 G, 0.5 mS | 1,000 G, 0.5 mS |
POWER
| Input Voltage | 22-30V | 22-30V |
| Input Current | 14-18 mA | 14-18 mA |
| Max Voltage | 31.5V | 31.5V |
OUTPUT SIGNAL
| Pulse |
+5V to 0V, 2 (+/- 0.5) microseconds |
+5V to 0V, 2 (+/- 0.5) microseconds |
