基于MEMS陀螺的高温随钻定向测斜仪研究
High temperature directional inclinometer while drilling based on MEMS gyro
杨永友 1底青云 1谢棋军 1马良令 1王京京 1张露 2任春华2
作者信息
- 1. 中国科学院深地资源装备技术工程实验室,中国科学院地质与地球物理研究所,北京 100029
- 2. 重庆大学光电工程学院,重庆 400044
- 折叠
摘要
针对油气井测量时所面临的小孔径、超深井、温度范围广、温度变化率高、工作时间长等挑战,研究了基于MEMS陀螺仪的定向测斜仪,设计了 MEMS陀螺定向测斜仪软硬件系统.为确保该环境下的测量精度提出了一种动态温度补偿方案,并采用基于小波滤波多尺度分析的方法对动态温变环境下陀螺输出信号进行去噪滤波处理,以实现定向测斜仪系统的测量精度.论文给出了定向测斜仪硬件系统方案、定向测斜算法、小波多尺度滤波算法.测试结果表明:该系统在常温和动态温变环境下井斜方位角精度优于±2°,井斜角精度优于±0.1°,工作温度最高150 ℃,可适应我国深层油气井勘探开发的应用场景需求.
Abstract
Aiming at the challenges of small diameter,ultra-deep well,wide temperature range,high temperature change rate and long working time in oil and gas well measurement,the directional inclinometer based on MEMS gyroscope is studied,and the software and hardware system of MEMS gyroscope directional inclinometer is designed.In order to ensure the measurement accuracy in this environment,a dynamic temperature compensation scheme is proposed,and the method based on wavelet filtering multi-scale analysis is used to denoise and filter the gyro output signal in the dynamic temperature change environment to achieve the measurement accuracy of the directional inclinometer system.The hardware system scheme of directional inclinometer,directional inclinometer algorithm and wavelet multi-scale filtering algorithm are given in this paper.Test results show that the deviation azimuth accuracy of the system is better than±2° and the deviation angle accuracy is better than±0.1° under normal temperature and dynamic temperature change environment and the maximum operating temperature is 150 ℃.All indexes are suitable for the working environment of small-diameter,ultra-deep and horizontal wells,and have broad application prospects.
关键词
定向测斜仪/动态温变环境/MEMS陀螺/零偏补偿Key words
Directional inclinometer/Dynamic temperature change environment/MEMS gyroscope/Zero offset compensation引用本文复制引用
基金项目
中国科学院战略性先导科技专项(A类)(XDA14030201)
重庆市自然科学基金(cstc2020jcyjmsxmX0974)
出版年
2024
NETL
NSTL
万方数据