... 引起听觉的振动波测井sonic logging 声幅值acoustic amplitude 生产能力production capacity ...
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发现频率低时，由于记录到的声幅值较高，评价结果可靠。
When the frequency is low, the recorded acoustic amplitude value is high. So the evaluation result is reliable.
与常规水泥相比，泡沫水泥声阻抗值较低，用CBL中的常规声幅曲线评价泡沫水泥与套管的胶结质量，可能会得出错误的解释结果。
The impedance of foamed cement is lower compared to conventional cement. It may lead to wrong results to assess the coupling be - tween foamed cement and pipe from the amplitude of CBL.
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