【摘要】 某些测井曲线上出现的毛刺干扰,具有随机性质,周期短,并与地层性质无关。它们给计算机处理测井资料带来严重的影响,使计算的地质参数产生很大的误差。本文应用各种平滑滤波法来抑制或消除这些毛刺干扰,分别采用四种滑动平均值的计算公式,设计出相应的三点和五点平滑滤波程序,对毛刺干扰严重的声波测井曲线进行了实际数字处理。结果表明,应用五点的钟形函数或二次函数作平滑滤波,可取得较好的效果。更多还原

【Abstract】 The sawtooth interference on some log curves is a random noise with short cycle. It is independent of the formation property and adversely affects log data computer processing, resulting in a lot of errors in the geological parameters computed.A variety of methods of moving average filter have been used to smooth out the sawtooth interference. Four computing formulas were used and the correspondent programs of three and five point moving average filter were designed. The acoustilog curve with serious sawtooth interference has been processed by the program. It has been shown that better effect can be obtained by using the methods of five point of bell-shaped or quadratic function,更多还原