Thin reservoirs prediction method such as spectral inversion has drawn considerable attention in recent years. In order to avoid extracting wavelets within the whole field area purposeless and to make the filtered data has preferable fidelity as well as signal-to-noise ratio, an effective structural constrained thin reservoir description method which combines spectral inversion and wide-band Ricker wavelet filtering technology has been proposed in this paper. The method given here is more credible and is suitable for the prediction of middle-deep thin reservoirs. We take LD-A structure within Bohai Bay Basin as an example to show the implement of our method. Several sets of thin sand layers which are hardly to recognize originally have been finally identified. Also, with the application of this method, a high-production thin reservoir of LD-B structure has been identified accurately, which provides credible information for subsequent fine oil exploration and development.
References
[1]
Chopra, S., Castagna, J.P. and Xu, Y. (2009) Thin-Bed Reflectivity Inversion and Some Applications. First Break, 27, 17-24.
https://doi.org/10.3997/1365-2397.2009009
[2]
Portniaguine, O. and Castagna, J.P. (2004) Inverse Spectral Decomposition. 74th SEG Conference & Exhibition, Extended Abstracts, 1786-1789.
https://doi.org/10.1190/1.1845172
[3]
Puryear, C.I. and Castagna, J.P. (2006) An Algorithm for Calculation of Bed Thickness and Reflection Coefficients from Amplitude Spectrum. 76th SEG Conference & Exhibition, Extended Abstracts, 1767-1770. https://doi.org/10.1190/1.2369866
[4]
Puryear, C.I. and Castagna, J.P. (2008) Layer-Thickness Determination and Stratigraphic Interpretation Using Spectral Inversion: Theory and Application. Geophysics, 73, R37-R48. https://doi.org/10.1190/1.2838274
[5]
Zeng, H.L. and Backus, M.M. (2005) Interpretive Advantages of 90°-Phase Wavelets: Part 1—Modeling. Geophysics, 70, C7-C15. https://doi.org/10.1190/1.1925740
[6]
Zeng, H.L. and Backus, M.M. (2005) Interpretive Advantages of 90°-Phase Wavelets: Part 2—Seismic Application. Geophysics, 70, C17-C24.
https://doi.org/10.1190/1.1925741