阐述了声波变密度测井时对其进行测前、测后线性刻度及记录时差曲线的必要性。

It is necessary to record the linear scale before and after log and the time difference curve in the acoustic variable density log.

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摘要阐述了声波变密度测井时对其进行测前、测后线性刻度及记录时差曲线的必要性。

It is necessary to record the linear scale before and after log and the time difference curve in the acoustic variable density log.

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故障字典法通常需要在测前仿真各种故障状态，提取出与故障状态相对应的电路特征，再将两者一一对应关系列成一个表，即为字典。

The approach of fault dictionary often needs to simulate all fault states and extracts corresponding character of circuit , then setup the dictionary by corresponding relation.

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