Oil, Gas & Mining

Downhole Inertial Sensors for MWD/LWD

Measurement-While-Drilling (MWD) and Logging-While-Drilling (LWD) operations demand sensors that can survive and perform accurately in extreme downhole environments. With temperatures reaching +180°C, pressures exceeding 20,000 psi, and intense vibration, only purpose-built inertial sensors can deliver reliable data.

High-Temperature Quartz Accelerometers

GyroNavi's quartz flexure accelerometers are specifically engineered for downhole applications. Unlike MEMS sensors that degrade at high temperatures, our quartz accelerometers maintain exceptional stability and resolution from ambient to +180°C.

• Operating Temperature: -55°C to +180°C, continuous operation
• Resolution: Better than 1 μg for precise inclination measurement
• Shock Survival: Withstands 500g+ shocks during drilling operations
• Long-Term Stability: Minimal bias drift over extended downhole deployments

Applications in Directional Drilling

Quartz accelerometers provide the gravity reference needed for continuous inclination and toolface angle measurement. Paired with magnetometers or gyroscopes, they form the core sensor suite for steering the drill bit along a planned well trajectory.

Continuous North-Seeking Gyro for Directional Drilling

When magnetic interference from casing or formation makes magnetometer-based azimuth unreliable, a north-seeking gyroscope becomes essential. GyroNavi's GN1-FOG-98 delivers true north-finding capability with the ruggedness required for downhole deployment.

• Autonomous north-finding without magnetic reference
• Gyrocompassing accuracy suitable for wellbore positioning
• Compact design for slim-hole MWD tools
• Shock and vibration resistance for drilling environments

Mining Survey Applications

Beyond oil and gas, our inertial sensors support precision surveying in underground mining operations. Borehole trajectory measurement, stope monitoring, and geotechnical instrumentation all benefit from high-temperature, high-shock inertial sensors.