Successful application of optimized aperture based CRS stack in the Shengli exploration area
Sui Feng-Gui1, Sui Shu-Ling1, Li Zhen Chun2, Sun Xiao-Dong2, Li Fang2, and Li Dong2
1. Geo-Science Research Institute of Shengli Oilfield, Dongying 257015, China.
2. College of Geo-Resources and Information in the China University of Petroleum, Dongying 257061, China.
Abstract：
The common reflection surface (CRS) stack is based on the local dip of the reflector and the reflection response within the first Fresnel zone. During the CRS stack all the information given by a multi-coverage reflection dataset can be successfully utilized. By now, it is known as the best zero-offset (ZO) imaging method. In this paper high quality CRS kinematic parameter sections are obtained by a modified CRS optimization strategy. Then stack apertures are calculated using the parameter sections which finally results in the realization of the CRS stack based on optimized aperture. Thus the advantages of CRS parameters are fully developed. Application to model and real seismic data reveals that, compared with the image section by a conventional CRS stack, the image section by CRS stack based on an optimized aperture improves both the signal-to-noise ratio and the continuity of reflection events.
SUI Feng-Gui,SUI Shu-Ling-1,LI Zhen-Chun et al. Successful application of optimized aperture based CRS stack in the Shengli exploration area[J]. APPLIED GEOPHYSICS, 2009, 6(4): 347-353.
[1]
Hoecht, G., and Bergler, S., 2001, CRS stacking formula for 3-D acquisition: Wave Inversion Technology, Annual Report, 5, 19 - 23.
[2]
Hoecht, G., de Bazelaire, E., and Majer, P., 1999, Seismic and optics hyperbolae and curvatures: Journal of Applied Geophysics, 42(3 - 4), 261 - 281.
[3]
Hubral, P., Hoecht, G., and Jaeger, R., 1999, Seismic illumination: The Leading Edge, 18(11), 1168 - 1171.
[4]
Hubral, P., Schleicher, J., and Tygel, M., 1996, A unified approach to 3-D seismic reflection imaging, Part I: Basic concepts: Geophysics, 61, 742 - 758.
[5]
Li, Z. C., Yao, Y. X., and Ma, Z. T., 2003a, Common reflection surface stack method based on multi-level optimization of parameters: Oil Geophysical Prospecting (in Chinese), 38(2), 156 - 161.
[6]
Li, Z. C., Yao, Y. X., and Ma, Z. T., 2003b, Migration velocity modeling based on common reflection surface gather. Acta Seismologica Sinica (in Chinese), 25(4), 406 - 414.
[7]
Mann, J., Jaeger, R., and Muller, T., 1999, Common-reflection-surface stack - a real data example: Journal of Applied Geophysics, 42, 30 - 318.
[8]
Muller, T., Jaeger, R., and Hoecht, G., 1998, Common reflection surface stacking method-Imaging with an unknown velocity model: 68th Ann. Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1764 - 1767.
[9]
Perroud, H., Hubral, P., and Hoecht, G., 1999, Common-reflection-point stacking in laterally inhomogeneous media: Geophys. Prosp., 47(1), 1 - 24.
[10]
Schleicher, J., Tygel, M., and Hubral, P., 1993, Parabolic and hyperbolic paraxial two-point traveltimes in 3D media: Geophys. Prosp., 41(4), 495 - 514.
[11]
Spinner, M., 2007, CRS-based minimum-aperture Kirchhoff migration in the time domain: PhD thesis, 19 - 30.
[12]
Yang, K., Wang, H. Z., and Ma, Z. T., 2004, The practice on common reflection surface stack: Chinese J. Geophys. (in Chinese), 47(2), 327 - 331.
2009, Vol. 6 
