测井薄层信息分辨率及其应用  

Log Resolution for Thin Bed and Its Application.

作　　者：钱勇先[1] 钟兴水[1] 

机构地区：[1]江汉石油学院

出　　处：《测井技术》1997年第3期157-161,178,共6页Well Logging Technology

基　　金：国家自然科学基金会

摘　　要：钱勇先，钟兴水．测井薄层信息分辨率及其应用．测井技术，１９９７，２１（３）：１５７～１６１利用沃尔什（Ｗａｌｓｈ）函数理论、线性系统理论和测井响应方程，从一个新的角度提出了测井薄层信息分辨率的概念。文中给出了最小地层厚度与地层物理量最高序率的关系，定义了薄层信息分辨率，分析了声波时差测井和深感应测井的薄层信息分辨率，结果表明在０．１２５ｍ深度采样间隔时两者的信息分辨率可达０．２５ｍ。根据信息分辨率的概念对常规声波时差曲线进行了处理，并与实测的高分辨率时差曲线对比，两者在分辨率和地层时差值上都符合得很好。Based on Walsh function theory, linear theory and logging response equations, the concept about log resolution for thin bed is given from a new point of view. The relation between minimum formation thickness and maximum cycle ratio of formation physical quantity is provided in this article. Definition of log resolution for thin bed is also given. Resolution of acoustic slowness log and deep induction log for thin bed is analysed. It is proved that their resolution may be up to 0 25m when sampling interval is 0 125m. Analysing conventional sonic slowness log with the concept mentioned above and comparing it with the measured high resolution slowness log show that both agree in resolution and the value of Δ t .

关 键 词：测井曲线 薄层信息分辨率 测井资料 

分 类 号：P631.84[天文地球—地质矿产勘探]