North Seeking Mems Imu For Gyro Tools 3 (1)

MEMS Gyroscope Directional Module for GWD

ER-Gyro-15
1.The azimuth and tool face angle can be output normally at small well inclination, with the accuracy kept within 3°;
2.Adopt the latest three-axis MEMS gyro, three-axis MEMS accelerometer strapdown inertial measurement technology;
3.Subverting the size of traditional gyro tools, it is extremely small, with optional diameters of 25.4/30mm and a length of 120mm, which can be easily embedded in narrow front-end spaces such as probes.

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Introduction

ER-Gyro-15 MEMS Gyroscope Module for GWD

Introduction
ER-Gyro-15 is equipped with a high-precision MEMS gyroscope with self-seeking function. By integrating the real-time data of the three-axis MEMS gyroscope and the three-axis accelerometer,it can perform high-precision tracking and holding measurements of azimuth, well inclination and tool face angle in real time under large random vibration conditions, which is especially suitable for measurement while drilling scenarios.

Traditional magnetic sensitive element inclinometers cannot guarantee the azimuth measurement accuracy in casing, tubing, drill pipe and well sections affected by magnetic interference. For such abnormal magnetic field environment, gyro orientation technology based on the earth's rotation angular velocity sensing is required.

The azimuth and tool face angle can be output normally at small well inclination, with the accuracy kept within 3°, which solves the technical defect that most gyro logging tools cannot output effective azimuth at small well inclination.

The device supports measurement while drilling, point measurement and continuous measurement, can quickly collect drilling data, control drilling trajectory, greatly shorten measurement time, and significantly improve operation efficiency. It is an ideal equipment for oil and gas logging and other fields.

Features

The azimuth and tool face angle can be output normally at small well inclination, with the accuracy kept within 3°;
Adopt the latest three-axis MEMS gyro, three-axis MEMS accelerometer strapdown inertial measurement technology;
Subverting the size of traditional gyro tools, it is extremely small, with optional diameters of 25.4/30mm and a length of 120mm, which can be easily embedded in narrow front-end spaces such as probes;
All-solid-state design, excellent impact and vibration resistance
Dynamically maintain the accuracy of azimuth, well inclination and tool face angle under vibration environment (random);
30s fast alignment, azimuth accuracy 1°, 90s precise alignment, azimuth accuracy 0.5°;
The well inclination measurement angle is up to 0.1°; the gyro tool face angle accuracy can reach 1°/secL (L represents latitude);
It can measure while drilling and can also measure continuously;
Not affected by magnetic field, with self-seeking north function;
5~125°C full temperature calibration compensation, adapt to extreme environments;

Applications
1) North-finding logging tools/gyroscopes;
2) Pointing and guidance of advanced mining/drilling equipment;
3) North-finding for oil inclination measurement;
4) Pipeline measurement.

Er Mns 09h North Seeker Coordinate Polarity Definition (front View)

Figure 1. ER-Gyro-15 gyro tool orientation module coordinate polarity definition (front view)

Specifications

Model	ER-Gyro-15		ER-Gyro-15H
Performance	Parameter
Azimuth accuracy(1σ,°secψ)	1	0.5	1	0.5
Gyro tool face angle accuracy(°,1σ)	1/secL(L stands for latitude)		1/secL(L stands for latitude)
Well inclination alignment accuracy(°,1σ)	0.1		0.1
Azimuth hold accuracy	20min		20min
Attitude hold accuracy	20min		20min
Azimuth measurement range(°)	0~360		0~360
Gravity tool face angle measurement range(°)	-180~180		-180~180
Gyro tool face angle measurement range(°)	0~360°		0~360°
Well inclination measurement range(°)	0~180		0~180
Update rate (Hz)	100		100
Power supply and working environment
Operating temperature(℃)	5~+85		5~125
Storage temperature(℃)	0~+90		0~130
Wide voltage(V)	6~12V
Power(W)	2		3
Communication interface	RS-422
Appearance characteristics
Size(mm×mm)	120mm x Φ30mm/120mm x 25.4mm
Weight(g)	≤150g