摘要
分析了随钻测量仪器传感器的正交误差特征。为避免现有方法的局限性,建立了一种便捷、实用的正交校准模型。在试验数据统计结果的基础上,在允许的范围内对传感器进行了假设。传感器输出轴与理想坐标系坐标轴夹角小于1°,传感器输出误差可以视作是姿态角度的正弦或余弦函数。建立了一组正交误差消除公式,并给出了传感器数据采集流程及正交误差系数的计算方法。对正交误差模型系数进行解算,可以得到消除正交误差之后的传感器输出,进而计算出较为精确的仪器姿态信息。试验结果证明,该方法具有一定的通用性,移植简单,可用于随钻测斜及垂直钻井系统。该系统已应用于简单的单多点测斜系统及稍复杂的陀螺测斜系统,效果良好。
The orthogonal error characteristics of the sensors in measurement while drilling （MWD） instruments are analyzed,inorder to avoid the limitations of existing methods,a practical orthogonal calibration model is established.On the basis of thestatistical result of test data,hypotheses are made for the sensors within the allowable range.The angle between the output axle ofsensor and the axis of ideal coordinate system is less than one degree,the output error of sensor can be considered as a sine orcosine function of the attitude angle; then a set of orthogonal error elimination formula is established,and the data collectionprocess of the sensor and the calculation method of the orthogonal error coefficient are given.The output of the sensor aftereliminating the orthogonal error can be resolved through calculating the coefficient of orthogonal error model,and then moreaccurate attitude information of the instrument can be calculated.The test results prove that this method is universal and can besimply transplanted,which can be used in the MWD of inclinometer and vertical drilling system.The system has been applied insimple multi.point inclinometer system and slightly complicated spiral inclinometer system with excellent effects.
作者
刘庆
LIU Qing(College of Mechanical and Control Engineering,Shengli College,China University of Petroleum,Dongying 257061,China)
出处
《自动化仪表》
CAS
2018年第5期74-76,80,共4页
Process Automation Instrumentation
关键词
传感器
正交误差
校准模型
校准方法
系数解算
随钻测量
Sensor
Orthogonal error
Calibration model
Calibration method
Coefficient calculation
Measurement whiledrilling （MWD）
