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肖加奇等.用递推最小一乘法对微电阻率扫描测并进行速度和加速度校正.测并技术,1994,18(3):204~211测井过程中井下仪器的非匀速运动经常严重地影响微电阻率扫描测井,必须进行速度和加速度校正。本文从理论上推得描述井下仪器运动状态的微分方程,分析了测井过程中井下仪器运动的轨迹和特征,提出了测井曲线速度和加速度校正的数学模型,应用递推最小二乘理论,导出了一种递推速度和加速度校正算法,最后介绍了速度和加速度校正程序的结构及其应用情况。
Xiao Jiaqi and so on. Micro-resistivity scanning and velocity and acceleration correction with recursive least-squares method. Measurements and Techniques, 1994, 18 (3): 204-211 Non-uniform motion of downhole tools during logging often affects micro-resistivity scanning logs and requires velocity and acceleration corrections. This paper theoretically deduces the differential equation describing the motion state of the downhole instrument, analyzes the trajectory and characteristics of the downhole instrument during the logging process, puts forward the mathematical model of logging curve velocity and acceleration correction, applies the recursive least square theory, A recursive speed and acceleration correction algorithm is derived. Finally, the structure of the speed and acceleration correction program and its application are introduced.