| Original Articles |
|
|
|
|
A New Method for Calculation of Single Seismic Phase of Cylindrically Multilayered Media Including Liquid Interlayer |
| SONG Ruo-Long1;WANG Ke-Xie1;ZHANG Hong-Bing2;HAN Wei1 |
| 1School of Physics, Jilin University, Changchun 1300232School of Civil Engineering, Hehai University, Nanjing 210098 |
|
| Cite this article: |
|
SONG Ruo-Long, WANG Ke-Xie, ZHANG Hong-Bing et al 2007 Chin. Phys. Lett. 24 1309-1312 |
|
|
|
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 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.
|
| Keywords:
43.40.Ph
43.20.Gp
91.30.Ab
|
|
|
Received: 07 December 2006
Published: 23 April 2007
|
|
| PACS: |
43.40.Ph
|
(Seismology and geophysical prospecting; seismographs)
|
| |
43.20.Gp
|
(Reflection, refraction, diffraction, interference, and scattering of elastic and poroelastic waves)
|
| |
91.30.Ab
|
(Theory and modeling, computational seismology)
|
|
|
|
|
|
[1] Kennett B L N 1974 Bull. Seis. Soc. Am. 64 1685
[2] Yao Z X and Zheng T Y 1985 Acta Geophysics Sin. 28 510
[3] Chen X F et al 1996 Geophysics 61 1150 Chi S H and Carlos T V 2004 SEG Expanded Abstracts 23 350
[4] Dong Q D et al 1985 Acta Geophisica Sin. 28 208
[5] Cheng C H and Toksoz M N 1981 Geophysics 46 1042 Kurkjian A L and Cheng S K 1986 Geophysics 51 148
[6] Schmitt D P and Bouchon M 1985 Geophysics 50 1756
[7] Tubman K M et al 1984 Geophysics 49 1051 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
