井筒数据的Akima插值重采样方法

在测井资料处理解释过程中,需要对井筒数据进行重采样.全局多项式和三次样条插值是目前常用的数值插值重采样方法,但存在计算量大、局部形变大等缺点.介绍了Akima分段三次多项式插值方法,通过数值实验并与三次样条插值效果进行比较分析,表明Akima分段三次多项式插值是简便、快速、保形性好、便于实现的井筒数据重采样方法.

An Akima Interpolation Method for Borehole Data Resampling

During the log data processing,it is necessary to resample the borehole data,varying the regular sample spaces or changing irregular spaces into regular sample spaces or vice versa. The entire multinomnial and cubic spline interpolation methods are commonly used, but they need amount of calculations and often generate distortion partially. This paper introduces the Akima subsection cubic multinomnial method for borehole data resampling. Data testing and log applications demonstrate that the Akima method is simple and efficient with less shape departure, and is easily used for borehole data resampling.