MEMS Gyro Directional Module fully upgraded，Redefined measurement standards

In the fields of oil and gas logging, geophysical exploration, directional drilling, etc., downhole trajectory measurement always faces three major challenges: azimuth accuracy attenuation under magnetic field interference environment, drilling stop measurement under vibration conditions, and measurement blind area under small well inclination conditions.

Today, the ER-Gyro-15 MEMS gyro directional module has made a disruptive technological breakthrough, officially announcing that "small well inclination measurement blind area", "drilling stop measurement" and "magnetic interference measurement dilemma" have become history, bringing double innovations in efficiency and cost for directional drilling, while drilling measurement and other scenarios.

ER-Gyro-15 has the function of self-seeking north, which can realize high-precision while drilling measurement and continuous measurement. It can continuously measure the well inclination angle, tool face angle and azimuth changes in real time.

Azimuth high-precision output technology for small well inclination

Technological breakthrough: It solves the problem of high-precision output of azimuth and tool face angle in small well inclination, and realizes hierarchical precision optimization for the well inclination range of 1°~90°:

1°~2° well inclination: azimuth accuracy reaches 3°;

2°~5° well inclination: azimuth accuracy is improved to 2°;

5°~90° well inclination: azimuth accuracy exceeds 0.5°;

It directly solves the technical defect that many current gyro logging tools cannot output effective azimuth in small well inclination sections. Compared with the redundant solution that requires the integration of fluxgate and gyro directional sensor to solve the azimuth output of small well inclination, it significantly reduces the use cost of customers in logging, geophysical exploration, and directional drilling.

Tracking and maintaining in random vibration environment, MWD without stopping drilling

All-solid-state design: ER-Gyro-15 adopts three-axis MEMS gyro and accelerometer strapdown inertial measurement technology, which has strong stability and high reliability. With all-solid-state design without moving parts and built-in inner platform, it has upgraded anti-impact and anti-vibration capabilities.

Different from the limitation of traditional equipment that needs to stop drilling for measurement, this device supports continuous dynamic tracking while drilling, and can still perform high-precision tracking and maintenance measurement of azimuth, well inclination, and tool face angle in real time under large random vibration conditions. It is especially suitable for MWD scenarios, and high-precision azimuth, well inclination, and tool face angle data can be obtained without stopping drilling. Compared with the operation mode of traditional equipment that needs to stop drilling for calibration, the efficiency is greatly improved.

Fast and accurate measurement

Can achieve 30s fast alignment, azimuth accuracy can reach 1°; 90s accurate alignment, azimuth accuracy can reach 0.5°. Greatly improve work efficiency.

The azimuth accuracy can reach 0.5°secψ (1σ), the gyro tool face angle accuracy is 1°secL (L is latitude), and the well inclination accuracy is 0.1° (1σ).

The well inclination measurement range is 0~180°, the azimuth and gyro tool face angle measurement range covers 0~360°, and the gravity tool face angle measurement range is -180~180°, achieving precise trajectory control.

Optimized size, suitable for extremely narrow space applications

Cylindrical design: Using the latest MEMS gyro technology, based on the original 30mm diameter specification, a new 25.4mm ultra-mini size is added. Both are 120mm in length and weigh ≤150g, subverting the size of traditional gyro tools and becoming extremely small.

The 30mm specification is compatible with the installation space of conventional probes, and the 25.4mm specification is designed for scenarios with strict and demanding requirements on the diameter of the drill pipe. It can be easily embedded in the narrow front-end space of probes, drilling tools, etc., and even adapt to the demanding diameter of Φ28mm drill pipes. This design subverts the traditional gyro tool's perception of "large size = high performance", so that the measurement operations in extreme scenarios such as deep wells and small-diameter drilling are no longer limited by the size of the equipment, and the scope of application is expanded to areas that traditional tools cannot reach.

Stable output under extreme working conditions

Self-seeking function: ER-Gyro-15 has a built-in high-precision self-seeking MEMS gyroscope, which completely gets rid of the dependence on the geomagnetic field and realizes azimuth measurement through the earth's rotation angular velocity sensing. In the casing, tubing, drill pipe and other well sections with strong magnetic interference, or in the geomagnetic anomaly area, it can still maintain 0.5° azimuth accuracy, and the problem of azimuth accuracy attenuation in the magnetic field interference environment no longer exists!

High temperature resistant design: -5℃~+125℃ full temperature calibration compensation, it can work stably in extreme environments and adapt to the temperature requirements of most drilling scenes in the world. The miniaturized design can also effectively extend the use time of the thermos.

ER-Gyro-15 has broken through the application bottleneck of traditional gyro tools in magnetic interference environment, vibration conditions and space constraints through the optimization of small well deviation accuracy, the upgrade of anti-vibration performance and the new size design. Compared with the high-cost solution of "fluxgate + gyro" combination, it has achieved the cost-effectiveness improvement of "single device with full functions" and achieved the double breakthrough of "high performance + low investment". It provides a more economical and efficient solution for precise orientation under complex working conditions.