| 横波液速的卷积反投影估计 |
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| 引用本文： | 龚伟,厉力华,何振亚. 横波液速的卷积反投影估计[J]. 东南大学学报(自然科学版), 1991, 0(5) |
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| 作者姓名： | 龚伟 厉力华 何振亚 |
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| 作者单位： | 东南大学无线电工程系，东南大学无线电工程系，东南大学无线电工程系 |
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| 摘 要： | 声波测井记录中有关横波速度的估计是目前需要解决的一个难题,原因在于伴随着横波存在着强伪瑞利波(Pseudo-Rayleigh Wave),为了有效地抑制干扰波,突出横波的强度,必须估计测井信号的非色散谱。本文详细讨论了利用CT技术中卷积反投影重建技术估计多道测井记录的非色散谱的算法,并由此进一步得到横波波速的估计。计算机模拟结果表明该算法是有效的,在估计精度上优于传统的相似处理技术。
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| 关 键 词： | 声波测井 色散波 速度 估计/横波 卷积反投影 |
Velocity Estimation of Shear Wave Based on Convolution Back-Projection Mathod |
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| Gong Wei,Li Lihua,He Zhenya. Velocity Estimation of Shear Wave Based on Convolution Back-Projection Mathod[J]. Journal of Southeast University(Natural Science Edition), 1991, 0(5) |
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| Authors: | Gong Wei Li Lihua He Zhenya |
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| Affiliation: | Gong Wei;Li Lihua;He Zhenya Department of Radio Engineering |
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| Abstract: | The velocity of shear wave is difficult to estimate due to existen-ce of Psuedo-Rayleigh (PR) wave, which is strong and accompanies the shear wave. To suppress the interference of other wavelets such as PR wave,it is necessary to estimate the nondispersive spectrum of the logging signal,so the convolution back-projection method, which is widely used in CT, is introduced and modified and then the velocity of shear wave is estimated.The simulation results demonstrate that this method is effective and the estimation accuracy is better than that of conventional semblance method. |
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| Keywords: | Acoustical log dispersive wave velocity estimation shear wave convolution back-projection |
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