Gyro While Drilling FOG INS

ER-Gyro-03 (0°~180°/±0.2°)
1. Inclination: ±0.2°; azimuth: ±2.0°; tool face angle: ±0.5°;
2. Measure while drilling & real-time upload & draw of measurement data;
3. Automatic north seeking & continuous attitude and position measurement.

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Introduction

Gyro While Drilling FOG INS

FOG Gyro While Drilling FOG INS (GWD) adopts an inertial measurement unit which consist of three axis fiber optic gyro and three axis accelerometer and applied well trajectory tracking algorithm to calculate well information (inclination, azimuth, tool face angle and No.1 pole angle), and can be used for drawing, data display etc.

Compared with the previous generation of products, under the condition of ensuring the measurement accuracy, it has achieved a smaller volume and a wider range of applications, which is suitable for narrow borehole oil and gas wells. The instrument has no moving parts, and has the characteristics of strong impact resistance, small drift and high precision.

Features

High precision fast continuous attitude and position measurement
It has the function of self seeking, easy to use
High precision, unaffected by magnetic field
Good seismic performance
Long life, high reliability, long calibration period
Real-time uploading and drawing of measurement data through cable
Multi sensor simultaneous complementary redundancy measurement, high reliability
Can be matched with existing logging instruments to achieve a variety of underground parameters and measurements
Inner diameter 38mm, which can be well used in drilling field

Applications

Oil and gas exploitation
Cased hole, well retest
Open window positioning, downhole directional perforation
Oil pipe logging
Measurement while drilling
Coal mining
Measurement of gas drainage hole in coal seam

Specifications

Inclination Measurement Range & Accuracy	0°~180°/±0.2°
Azimuth Measurement Range & Accuracy	0°~360°/±2° (inclination ≥3°)
Tool Face Angle Measurement Range & Accuracy	0°~360°/±0.5°
Working Temperature	-25˚C~85˚C (without heat shield)
Pressure	140MPa
Inner Diameter	38mm
Outer Diameter	Φ48mm (without heat shield)
Instrument Length	1700mm
Weight	45Kg
Well Diameter	≥Φ60mm
Power Supply	DC48V±10%
Output Interface	RS232, RS422, CAN
Measuring Speed	2m/s