声波测井的探测深度问题Ⅰ  

On the Investigation Depth of Sonic Logging (Ⅰ)

作　　者：沈建国[1] 

机构地区：[1]清华大学物理系

出　　处：《测井技术》2003年第2期125-128,共4页Well Logging Technology

摘　　要：从波动声学的角度讨论声波测井的探测深度问题。依据不同时刻液体固体界面附近的波阵面所反映的声波在液体和固体中的传播特征及其在液固界面上的耦合关系 ,确定了液固水平界面情况下声波测井的探测深度的概念。与电法和放射性测井等基于稳态情况下的解以及依据这些解建立的探测深度的概念不同 ,基于声传播过程的声波测井有一个最小探测深度的概念。基于两种不同声速的固体界面上声波的耦合关系实验结果 ,分析了长源距声波测井能够测量声速较高的原状地层纵波速度的原理。Based on acoustics, one can study the testing depth of sonic logging. From the numerical results of acoustic field of liquid and solid and their couple relationship on the interface, testing location of sonic logging is identified and minimum depth of sonic logging is introduced, which is different from electric and radioactive logging. Some experiment results of two solids displace the couple relationship of waves that propagate in two solids, and it is clear to measure the original formation velocities by sonic logging.

关 键 词：声波测井 探测深度 波动声学 实验 

分 类 号：P631.814[天文地球—地质矿产勘探]