Underground high-precision two-axis gyro inclinometer

By designing a high-precision two-axis gyro inclinometer in oil field oil drilling, using two-stage planetary gear reducers and angle sensors for precise control, and reducing temperature through heat absorbers and heat insulation materials, the problem of increasing downhole measurement error is solved, and a higher-precision logging data solution is achieved.

CN222686659UActive Publication Date: 2025-03-28SHAANXI AEROSPACE TIMES NAVIGATION EQUIP CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202420709020.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2025-03-28
Estimated Expiration
2034-04-08

AI Technical Summary

Technical Problem

In the existing oil field oil drilling continuous directional inclination measurement technology, as the logging depth increases, the downhole temperature increases, resulting in temperature drifting of the output data of the measurement component, increasing measurement errors, and low transmission accuracy, which cannot guarantee the accuracy of the measurement data.

Method used

A downhole high-precision two-axis gyroscope is designed, and a two-stage planetary gear reducer is used to improve the control accuracy of the servo motor. Combined with angle sensors and data processing modules, the rotation angle of the IMU short section is corrected in real time, and the temperature inside the inclinometer is reduced through the upper and lower heat absorbers and heat insulation materials.

Benefits of technology

It realizes higher angle control accuracy during the logging process, reduces measurement errors, improves the calculation accuracy of logging data, and extends the service life of the inclinometer.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses an underground high-precision two-shaft gyro inclinometer which comprises a cylindrical shell, the two ends of the cylindrical shell are connected with an upper connector and a lower connector respectively, a servo motor, a planetary gear reducer, an IMU short section and an angle sensor are installed in the cylindrical shell in the axial direction, the servo motor drives the IMU short section to rotate through the planetary gear reducer, and the angle sensor drives the IMU short section to rotate through the planetary gear reducer. The IMU short section is coaxially connected with the angle sensor; the IMU short section comprises a pipe shell, a two-axis gyroscope, a three-axis acceleration sensor and a data processing module, wherein the two-axis gyroscope, the three-axis acceleration sensor and the data processing module are located in the pipe shell. The data processing module is connected with the two-axis gyroscope, the three-axis acceleration sensor, the angle sensor and the servo motor. According to the utility model, the control precision of the servo motor is improved by adopting the two-stage planetary gear reducer, so that the zero drift error of the gyroscope and the accelerometer can be accurately eliminated in the preheating stage of the inclinometer, and better angle control precision is provided in the logging process, thereby ensuring the resolving precision of logging data.
Need to check novelty before this filing date? Find Prior Art