| A New Method for Calculation of Single Seismic Phase of Cylindrically Multilayered Media Including Liquid Interlayer |
| |
| 作者姓名： | 宋若龙 王克协 张宏兵 韩炜 |
| |
| 作者单位： | [1]School of Physics, Jilin University, Changchun 130023 [2]School of Civil Engineering, Hehai University, Nanjing 210098 |
| |
| 基金项目： | ＊ Supported by the National Natural Science Foundation of China under Grant Nos 40674059 and 10534040, and the Specialized Research Fund for the Doctoral Programme of Higher Education of China under Grant No 20040183045. |
| |
| 摘 要： | A new method based on generalized reflection and transmission （R/T） coefficients method is proposed to calculate the single seismic phase （SSP） of cylindrically multilayered media including liquid interlayer. The use of normalization factors and normalized Lamé coefficients makes the algorithm stable numerically. Using the modified R/T matrices, we derive the iterative expressions of generalized R/T matrices, and by using the iterative relation we determine the SSP of each interface and the full waveforms. To show the superiority of this new approach for investigating of reflection and transmission properties of cylindrically multilayered media, we simulate the full waveforms and SSPs of cased hole model with annulus I （casing-cement interface） channelling （or, cross-flow）. The generalized reflection coefficient spectra and SSPs of interfaces obtained show the propagation mechanism of each component of full waveform clearly.
|
| 关 键 词： | 多层介质 地震相位 计算方法 反射 传播 |
| 收稿时间： | 2006-12-7 |
| 修稿时间： | 2006-12-07 |
A New Method for Calculation of Single Seismic Phase of Cylindrically Multilayered Media Including Liquid Interlayer |
| |
| SONG Ruo-Long,WANG Ke-Xie,ZHANG Hong-Bing,HAN Wei.A New Method for Calculation of Single Seismic Phase of Cylindrically Multilayered Media Including Liquid Interlayer[J].Chinese Physics Letters,2007,24(5):1309-1312. |
| |
| Authors: | SONG Ruo-Long WANG Ke-Xie ZHANG Hong-Bing HAN Wei |
| |
| Institution: | 1School of Physics, Jilin University, Changchun 130023 ; 2School of Civil Engineering, Hehai University, Nanjing 210098 |
| |
| Abstract: | A new method based on generalized reflection and transmission (R/T) coefficients method is proposed to calculate the single seismic phase (SSP) of cylindrically multilayered media including liquid interlayer. The use of normalization factors and normalized Lame coefficients makes the algorithm stable numerically. Using the modified R/T matrices, we derive the iterative expressions of generalized R/T matrices, and by using the iterative relation we determine the SSP of each interface and the full waveforms. To show the superiority of this new approach for investigating of reflection and ransmission properties of cylindrically multilayered media, we simulate the fullwaveforms and SSPs of cased hole model with annulus I (casing-cementinterface) channelling (or, cross-flow). The generalized reflection coefficient spectra and SSPs of interfaces obtained show the propagation mechanism of each component of full waveform clearly. |
| |
| Keywords: | 43 40 Ph 43 20 Gp 91 30 Ab |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
| 点击此处可从《中国物理快报》下载免费的PDF全文 |
