摘要
总结了数字滤波技术在自然伽马测井中的应用情况 ,介绍了数字滤波效果评价准则 ,分析了数字滤波效果的的主要影响因素 ,并在此基础上提出滤波校正因子概念 ,以克服数字滤波对自然伽马测井曲线幅度带来的影响。阐述在编制地面系统自然伽马数字滤波软件时 ,应根据我国各油田具体地质条件和所用下井仪计数率高低 ,确定若干种不同的数字滤波方法 ,与之相应的数字滤波子程序可供实时测井时根据需要选用。
The paper summarizes the application of digital filtering techniques to natural gamma ray logging,and analyzes the criteria of judging digital filtering validity and the key factors affecting digital filtering validity. The paper also proposes the concept of filtering correction factor for the purpose of overcoming influence on logging curve amplitude of gamma ray logging caused by digital filtering. It is necessary to define several different kinds of filtering methods and corresponding digital filtering programs according to count rates of down hole tools and geological conditions of oilfields so as to be selected by nessary in real time logging. The correctness of the viewpoint is already proved in microcomputer system.
出处
《石油仪器》
2001年第6期8-10,60,共3页
Petroleum Instruments
关键词
自然伽马测井
数字滤波方法
地质条件
计数率
滤波校正因子
gamma ray logging,digital filter,geological condition,counting rate,filter correction factor
