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- W2374545446 abstract "The physical model is the same as what was used in ref. [1] and the two dimensions Fast Fourier Transformation algorithm (FFT) is adopted. The evaluation method and program which are used to calculate the full waveform of acoustic pressure in the cylindrical multilayer quasi elastical media is given.The numerical evaluation of the acoustic pressure waveform has been done for many kinds of parameters. The effect of the water layer between two solid media on the waveform is analysed, particularly for the changes of the earlest arrived wave when the cementing interface between casing and cement or cement and formation is broken and there is water between them. The results show that the amplitudes of P and S refracted arrival waves from casing are reduced obviosly when there is water layer between two solid media; and the reflected waves from the interface between solid and fluid is an important mechanism to affect the characters of the esrlest arrived wave." @default.
- W2374545446 created "2016-06-24" @default.
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- W2374545446 date "1985-01-01" @default.
- W2374545446 modified "2023-09-26" @default.
- W2374545446 title "NUMERICAL EVALUATION AND ANALYSIS OF THE ACOUSTIC PRESSURE WAVEFORM IN CYLINDRICAL MULTILAYERQUASI ELASTICAL MEDIA——A THEORETICALSTUDY OF ACOUSTIC LOGGING METHOD (II)" @default.
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