Wireless Fiber Optical Gyroscope Borehole Deviation Tools Drilling Hole Inclination Measurement Instrument Mining Downhole Deviation Survey Tools
It is mainly designed for measuring inclination (apex angle) and azimuth of borehole in magnetic mineral areas and iron casing tubes. It is mainly applied to measure inclination and azimuth in magnetic mine shafts and conductor holes as well as instruct construction and error correction of directional holes.
Technical Specifications
| 1. Measuring range of inclination: 0~90°, error ≤ 0.2°; |
| 2. Measuring range of azimuth: 0~360°, error ≤ 4° (1° ≤ inclination ≤ 45°); |
| 3. Static drift ≤ 2°, drifting nonlinearity ≤ 1°; |
| 4. Measuring mode: point measurement (frequency: 1 time / 140 s); |
| 5. Service life of the gyro > 1800 h; |
| 6. Serial port R232 for data transmission; |
| 7. Probe outer diameter of downhole instrument: φ40mm; |
| 8. Measured depth ≤ 2000m; |
| 9. Resistance to pressure of the probe ≤ 200kg/cm2; |
| 10. Working power of the instrument: AC220V±10%, 50Hz±10%; |
| 11. Working environment: |
| 12.Temperature: -10°~60° |
| 13. Humidity: 90% (40ºC) |
| 14. Probe overall dimension: φ40×2100mm |
| 15. Weight: 3kg |
Ordinary inclinometers mainly measure the azimuth of the borehole by orienting of magneto sensors. In magnetic mineral areas or iron casing tubes, the azimuth can't be determined for the interference of
magnetic substances. The most effective way to solve the interference of the magnetic substances is to apply gyro orientation. There are two categories of gyro: mechanical gyro and electronic gyro.
Mechanical gyro is with great zero drift, short service life and high price. The dynamically tuned gyroscope inclinometer adopts electronic gyro orientation and it is characterized in small volume, long lifetime, small zero drift, low price, etc. However, the dynamically tuned gyroscope inclinometer is poor in seismic resistance which can't meet the requirements of transportation therefore, it is easy to damage and hard to satisfy the field measurement demands with no warranty of realiable
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