P-SV wave elastic impedance and fluid identification factor in weakly anisotropic media
Cui Jie1, Han Li-Gguo1, Liu Qian-Kun2, Zhang Xian-Wen1, and Han Li1
1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China.
2. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China.
Abstract The P-SV wave reflection coefficients in VTI and HTI media were obtained by approximation of the Jilek (2002a and b) equation in orthotropic anisotropic media. An approximate equation for P-SV wave elastic impedance can be derived from the combination of the new coefficients with S-wave elastic impedance (Duffaut et al., 2000). On this basis, the fluid identification factor in weakly anisotropic media was constructed and used to identify the Castagna and Smith (1994) lithologic combination and achieved good results. Finally, we specifically analyzed the anisotropic parameter impacts P-SV wave elastic impedance and fluid factor trends.
This research is sponsored by the National 973 Program (Grant No.2007CB209603).
Cite this article:
CUI Jie,HAN Li-Guo,LIU Qian-Kun et al. P-SV wave elastic impedance and fluid identification factor in weakly anisotropic media[J]. APPLIED GEOPHYSICS, 2010, 7(2): 135-142.
[1]
Chen, T. S., Wei, X. C., and Liu, Y., 2006, New approximation equation for calculation of elastic impedance in anisotropic media: Geophysical Prospecting For Petroleum, 45(6), 563 - 569.
[2]
Connolly, P., 1999, Elastic impedance: The Leading Edge, 18(4), 438 - 452.
[3]
Dillon, L., Schwedersky, G., Guilherme, V., Velloso, R., and Nunes, C., 2003, A multiscale DHI elastic attributes evaluation: The Leading Edge, 22(10), 1024 - 1029.
[4]
Duffaut, K., Alsos, T., Landre, M., Rognø, H., Al-Najjar, N. F., 2000,Shear-wave elastic impedance: The leading Edge, 19, 1223 - 1229.
[5]
Eissa, M. A., and Castagna, J. P., 2003, Case study: AVO analysis in a high-impedance Atoka Sandstone (Pennsylvanian), North Arkoma Basin, McIntosh County, Oklahoma: The Leading Edge, 22(10), 988 - 997.
[6]
Ezequiel, F.G., Mukerji, T., Mavko, G., and Michelena, R. J., 2003, Near and far PS elastic impedance for discriminating fizz water from commercial gas: The Leading Edge, 22(10), 1012 - 1015.
[7]
Goodway, W., Chen, T., and Downton, J., 1997, Improved AVO fluid detection and lithology discrimination using Lamé petrophysical parameters from P and S inversion: 67th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 183 - 186.
[8]
Hilterman, F. J., 2001, Seismic amplitude interpretation: SEG/EAGE Distinguished Instructor Series No.4, SEG.
[9]
Jilek, P., 2002a, Converted PS-wave reflection coefficients in weakly anisotropic media: Pure and AppliedGeophysics., 159, 1527 - 1562.
[10]
Jilek, P., 2002b, Modeling and inversion of converted-wave reflection coefficients in anisotropic media: A tool for quantitative AVO analysis: Ph.D. thesis, Colorado School of Mines.
[11]
Castagna, J. P., and Smith, S. W., 1994, Comparison of AVO indicators: A modeling study: Geophysics, 59(12), 1849 - 1855.
[12]
Li, A. S., Yin, X. Y, Zhang, F. C., and Liu, Z. G., 2008, Elastic impedance in VTI media and parameter extraction: Progress In Geophysics, 23(6),1878-1885.
[13]
Li, J. Y., and Chen, X., 2008, Reservoir fluid identification based on seismic data: Acta Petrolei Sinica, 29(2), 235 - 238.
[14]
Liu, Q. K., 2008, Study on AVO and elastic impedance in azimuthal anisotropic media: Jilin University, Changchun.
[15]
Ma, J. F., and Morozov, I. B., 2007, The exact elastic impedance for P-SV wave: 77th Ann. Internat. Mtg., Soc. Explor. Geophys., Expanded Abstracts, 288 - 292.
[16]
Martins, J. L., 2002, An approach for elastic impedance in weakly anisotropic media: 72nd Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 185-188.
[17]
Martins, J. L., 2006, Elastic impedance in weakly anisotropic media: Geophysics, 71(3), D73 - D83.
[18]
Ning, Z. H., He, Z. H., and Huang, D. J., 2006, High sensitive fluid identification based on seismic data: Geophysical Prospecting For Petroleum, 48(2), 141 - 145.
[19]
Russell, B. H., Hedlin, K., Hilterman, F. J., and Lines, L. R., 2003, Fluid property discrimination with AVO: a Biot-Gassmann perspective: Geophysics, 68(1), 29 - 39.
[20]
Wang, D., He, Z. H., and Huang, D. J., 2009, Construction of a new fluid identification factor and analysis on its application: Geophysical Prospecting For Petroleum, 48(2), 141 - 145.
[21]
Yuan, S. J., and Yu, C. Q., 2006, Elastic impedance and seismic inversion in anisotropic media: Progress In Geophysics, 21(2), 520 - 523.
[22]
Yin, C., and Gu, H., 2008, The sensitivity analysis of AVO fluid factors: Chinese Journal of Engineering Geophysics, 5(1), 85 - 88.
2010, Vol. 7 
