The Continuous Gyro Inclinometer is a gyro inclinometer system that measures and transmits in real time the wellbore trajectory direction (azimuth Angle, well inclination Angle, tool face Angle) data during the continuous movement of the instrument. It overcomes the drawback of low efficiency of point measurement and quickly acquires the continuous trajectory data of the entire well section through measurement-while-drilling or continuous start-down measurement. The core of it still lies in using the fixed-axis property of high-speed rotating gyroscopes to search for true north, without relying on the geomagnetic field.
Brief Introduction to Working Principle
The core of the measurement with a Continuous Gyro Inclinometer lies in the fact that the gyro system and the accelerometer group inside the instrument keep working during their movement, constantly sensing the components of the Earth's rotation and the gravity vector. These raw data, after being calculated, ultimately yield real-time well inclination Angle, azimuth Angle and tool face Angle.
Advantages
Strong Anti-interference Ability- Fiber optic gyroscope technology is not affected by magnetic environments and is suitable for complex scenarios such as strong magnetic mining areas or casing wells.
High Efficiency- The continuous measurement mode reduces pauses and repetitive operations, significantly shortens measurement time, and enhances operational efficiency.
Well-adapted- Supports harsh environments such as high temperature and high pressure, and can be widely applied in both large and small wellbore drilling.
Multifunctionality- It can be used in combination with other logging tools, such as the multi-functional natural gamma logging instrument, to meet diverse logging requirements.
Continuous Gyro Inclinometer
Application Range
◆ Directional Drilling & Side Drilling
Monitor the wellbore posture in real time, guide the drill bit direction, and ensure that the wellbore enters the target layer along the designed trajectory.
While-Drilling Measurement (MWD)
During the drilling process, data such as the inclination Angle and azimuth Angle are transmitted back to the ground in real time to achieve closed-loop control.
◆ Oriented Perforating
Confirm the wellbore attitude before perforation to improve the positioning accuracy of perforation.
◆ High-Temperature Operations In Deep Wells
Applicable to deep oil and gas Wells with temperatures ranging from 150 ℃ to 200 ℃ and MPa above 150 , ensuring measurement reliability in extreme environments.
◆ Small Wellbore Drilling & Side Drilling of Old Wells
Particularly suitable for small wellbore measurement and side drilling technology of old Wells in the middle and later stages of oilfield development
◆ Comprehensive Monitoring of Oil and Gas Fields
Integrated with logging, fracturing, productivity monitoring and other systems, it realizes the full-process digital management of wellbore trajectory and tool attitude.
◆ Oil & Gas Exploration
Used for deep-sea drilling, drilling in complex geological structures, etc., to ensure that the drill bit accurately reaches the target position.
Conclusion
The Continuous Gyro Inclinometer has achieved a significant leap in wellbore trajectory measurement in terms of efficiency, data density and real-time performance by upgrading "spot measurement" to "continuous measurement" and integrating real-time data transmission technology.
It represents the mainstream development direction of gyroscopic logging technology and is particularly suitable for operation scenarios with long well sections, high efficiency and high precision requirements. Although its equipment cost and maintenance complexity are higher than those of point measurement, the comprehensive benefits it brings (time cost, data quality and risk control) make it occupy an irreplaceable and important position in modern oil logging, especially in the management of old wells and the operation of complex-structured wells.
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