- Based on the world’s latest MEMS gyro technology
- Operating temperature up to 150°C
- Azimuthaccuracy up to 0.25° (1σ)
- Fast alignment in 180 seconds even under slight vibration
- Compact size: diameter 25.4 mm, length 136.8 mm, weight 300 g
- Easy to integrate into MWD, well completionsystem, single/multi-shot, north-seeking and orientation systems
- Widely used in oil & gas, mining, geophysics, HDD and other fields
For downhole orientation, temperature and accuracy define what’s measurable. The ER-Gyro-29 pushes both limits at the same time — and does it without relying on Earth’s magnetic field.
- Temperature breakthrough: 125°C → 150°C
A 25°C increase may not sound like much, but downhole it’s the difference between stopping and continuing. More sections in deep wells, geothermal wells and unconventional oil & gas wells are now within reach. The B and C models support continuous, stable operation at 150°C.
- Accuracy breakthrough: 0.5° → 0.25°
Azimuth accuracy is doubled, with 0.1° inclination alignment accuracy for tighter trajectory control. For extended-reach wells and dense well patterns where angular deviation is critical, you gain a real edge.
- Zero magnetic dependency
Using triaxial navigation-grade MEMS gyroscopes and accelerometers in an IMU, the ER-Gyro-29 does not rely on geomagnetic measurement. In casing window sidetracking, strong magnetic interference sections and offshore dense well patterns — where magnetic instruments fail — it keeps outputting azimuth, inclination and toolface angles. With 180-second alignment and 20-minute accuracy hold, continuous MWD is uninterrupted.
Key Specifications
| Model | ER-Gyro-29A | ER-Gyro-29B | ER-Gyro-29C |
| Azimuth accuracy (1σ,secψ) | 1 | 0.5 | 0.25 |
| Gyro tool face angle accuracy (°,1σ) | 1/secL（L stands for latitude） | ||
| Well inclination alignment accuracy (°,1σ) | 0.1 | ||
| Alignment Time | 180s | ||
| Azimuth maintaining time | 20min | ||
| Attitude maintaining time | 20min | ||
| Power supply and working environment | |||
| Operating temperature (℃) | +5~+125 | +5~150 | |
| Storage temperature (℃) | 0~+130 | 0~150 | |
| Appearance characteristics | |||
| Dimension (mm×mm) | 136.8mm x Φ25.4mm | ||
| Weight (g) | ≤300g | ||
Applications
MWD trajectory control in directional, horizontal and extended-reach wells
Casing window sidetracking and strong magnetic interference sections
Anti-collision directional drilling in onshore cluster wells and offshore dense well patterns
High-temperature deep well MWD, unconventional shale and tight oil & gas
Geothermal directional wells and deep geological exploration
Horizontal directional drilling (HDD)
Bottom line
When high temperature, strong magnetics and dense well patterns make magnetic instruments unreliable, the ER-Gyro-29 is at its best. For technical data or application consultation, contact us today.