DOM-35D Digital Orientation Module
The μG MEMS sensor is the latest in a range of Azimuth sensors specifically aimed at advancing the technology of downhole directional measurements for the MWD market.
This sensor provides accurate and repeatable directional measurements using the latest in proprietary Azimuth MEMS Accelerometer technology, but partnered with our industry leading flux-gate Magnetometers. This hybrid of technologies means cost savings can be achieved for the end-user, but also improvements are delivered with increased robustness against high shock and vibration.
The μG MEMS sensor is qualified to 150DegC (302F), and tested under the same rigorous conditions expected of all Azimuth sensors.
The DOM-35D is designed to be backwardly compatible with Tensor-based systems and operates with the leading control/processor board units.
MEMS Accelerometers
Precision Flux Gate Magnetometers
Reduced Capital Cost
Tensor Compatible
- Low power consumption
- High-shock and vibe specification
- Robust MEMS Accelerometer
- Accurate, repeatable Inclination measurement
- Compatible with leading MPUs
- On-board coefficient storage
- Independent Mag and Accel switching
- Increased robustness
- Reduced cost
- Reduced ‘downtime'
- Reduced LIH cost
- Drop-in Tensor replacement
- MWD/LWD Borehole Surveying
- OEM implementation in new MWD systems
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Inclination Accuracy | 125ºC | +/-0.15º | Deg | ||
| 150ºC | +/-0.2º | Deg | |||
| Inclination Repeatability | +/-0.05 | Deg | |||
| TF/Rotation at >5° Inc - Accuracy | +/-0.5 | Deg | |||
| TF/Rotation at >5° Inc - Repeatability | +/-0.05 | Deg | |||
| Azimuth at >5° Inc - Accuracy | +/-1.0 | Deg | |||
| Azimuth at >5° Inc - Repeatability | +/-1.0 | Deg |
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Operating Voltage | +/-12.5 to +/- 15.5 | Volts | (+/-13V nominal) | ||
| Active Power Consumption | <0.5 | Watts | Accel & Mags powered | ||
| Quiescent Power Consumption | 75 | mWatts | |||
| Interface | SPI | ADC | |||
| I²C | EEPROM | ||||
| ADC Resolution | 12 | ||||
| EEPROM Capacity | 16 | Kbit | Internal K-Factor storage |
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Length | 29.2 (741.7) | Inches (mm) | |||
| Diameter³ | 1.378 (35.0) | Inches (mm) | Excludes lateral o-rings |
| Value | Units | Comments | |||
|---|---|---|---|---|---|
| Operating Temperature | -25 to 150 | °C | |||
| Survival Temperature | -40 to 175 | °C | |||
| Vibration | 30 | g pk | 50 – 1000Hz | ||
| 20 | g rms | 50 – 1000Hz | |||
| Shock | 1000 | g | 0.5mS Half Sine |
Notes
- Independent Magnetometer/Accelerometer power switching
- K-Factor storage and download
- Excludes lateral shock absorbers
We provide a responsive repair, calibration and product support service. Our highly experienced and knowledgeable personnel are available to troubleshoot or repair equipment, and provide general product technical assistance.
If you need effective sensor support for your business contact
support@azimuthmwd.com for more information.