| 钻井中S波共振与衰减特性的数值研究 |
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| 引用本文： | 罗朝盛.钻井中S波共振与衰减特性的数值研究[J].西华师范大学学报(哲学社会科学版),1991,12(3):262-267. |
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| 作者姓名： | 罗朝盛 |
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| 作者单位： | 四川师范学院物理系 |
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| 摘 要： | 从S波(横波)垂直割线积分的表达式出发,对S波的激发特性进行了研究。结果表明S波同P波一样,具有共振与衰减特性,其衰减在共振条件下随源距Z遵循1/Z规律,非共振条件下遵循1/(Z~(3/2))规律。通过对S波的时域波形的数值考察,得知“过滤效应”实质上是S波共振激发的反映。从频率域和时域上讧明了共振与衰减是S波重要的激发和传播机制。
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| 关 键 词： | S波 测井 全波测井 声波 |
THE NUMERICAL INVESTIGATION OF THE RESONANCE AND ATTENUATION OF THE S-WAVE IN A DRILLING WELL |
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| Luo Chaosheng.THE NUMERICAL INVESTIGATION OF THE RESONANCE AND ATTENUATION OF THE S-WAVE IN A DRILLING WELL[J].Journal of China West Normal University:Natural Science Edition,1991,12(3):262-267. |
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| Authors: | Luo Chaosheng |
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| Institution: | Department of Physics |
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| Abstract: | This paper made a study on the excited property of the S-wave (transverse wave)from the expression of the vertical branch cut intergration of the S-wave.The result showed that the S-wave had the same features of resonance and attenuation as p-wave. In the resonance frequency,the amplitude of S-wave decays in accordance with 1/z, and out of the resonance frequency it decays 1/z~(3/2) From the numerical investigation on time domain the paper discovered the"filler effect" is the reflection of the resonance excitation of the S-wave, and showed that the resonance and attenuation is an important excitation and propagation mechanism in the frequency domain and time domain. |
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| Keywords: | S-wave vertical branch cut integral resonace attenuation |
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