Abstract Seismic imaging quality is critical to describing reservoirs. There are many methods that can improve imaging quality; some rely on advanced processing means, whereas others rely on changing the field acquisition methods. However, most of the acquisition methods focus on improving imaging by using infill shots without considering the target-layer illumination energy. Moreover, total infill shooting greatly increases the acquisition cost. In this paper, we present a new method for maximizing the contribution to the target shadow area illumination by automatic local infill shooting. Thus, we designed 2D and 3D models and obtained the depth migration section by forward modeling, infill shots, depth migration, etc. The model results also show that by choosing the most appropriate number of shot points, we can enhance the shadow area energy and improve the target-layer imaging quality at low cost.
This work was funded by the Science and technology Program (No: 13ZB0191) and the Natural Gas Geology Innovation Team (No: 13TD0024) of Sichuan Province Education Department, and the Sichuan Province University Key Laboratory of Natural Gas Geology, the Sichuan Province key Disciplines Construction Program (Earth Exploration and Information Technology).
Cite this article:
ZHAO Hu,YIN Cheng,HOU Peng-Jun et al. An automatical infill shot method for uniform imaging of target layer[J]. APPLIED GEOPHYSICS, 2013, 10(2): 222-228.
[1]
Bruce, J., Ver, W., and Dechun, L., 2007, Modeling the impact of wide-azimuth acquisition on subsalt imaging: Geophysics, 72, 241 - 250.
[2]
Deng, Z. W., 2002, Study of seismic layout in areas with steep nappe structures: Geophysical Prospecting For Petroleum (in Chinese), 41(2), 127 - 131.
[3]
Dong, L. G., Wu, X. F., and Tang, H. Z., 2006, Seismic wave illumination for overthrust nappe structures and optimal seismic survey design: Geophysical Prospecting For Petroleum (in Chinese), 45(1),40 - 47.
[4]
Gerard, B., and Allan, A. R., 2007, Field design and operation of a novel deepwater, wide-azimuth node seismic survey: The Leading Edge,26,494-503.
[5]
Hu, C. S., and Paul, L. S., 2009, Slowness-driven Gaussian-beam prestack depth migration for low-fold seismic data: Geophysics, 74, 35 - 45.
[6]
Liu, D. J., Yang, R. J., and Luo, S. Y., 2012., The method of preserved-amplitude seismic migration imaging with stable generalized high order screen: Chinese J. Geophys. (in Chinese), 55(7), 2402 - 2411.
[7]
Ma, X. N., Bin,W., Cristina, R. T., Wilfred, W., and Li, Z. M., 2011, Enhanced prestack depth imaging of wide-azimuth data from the Gulf of Mexico: A case history: Geophysics, 76, 79 - 86.
[8]
Nick, M., Jerry, K., and Mark, E., 2008, Full-azimuth imaging using circular geometry acquisition: The Leading Edge, 27, 908 - 913.
[9]
Qin, G. S., Cai, Q. X., Wang, G. H., et al, 2010, 3D seismic geometry design based on pre-stack imaging, Progress in Geophysics (in Chinese), 25(1),?238 - 248.
[10]
Wu, B. Y., Wu, R. S., and Gao, J. H., 2012, Time-space localized seismic wave propagation: Dreamlet prestack depth migration. Chinese J. Geophys. (in Chinese), 55(9), 3105 - 3114.
[11]
Yue, Y. B., Li, Z. C., Qian, Z. P., et al., 2012, Amplitude-preserved Gaussian beam migration under complex topographic conditions: Chinese, J. Geophys., (in Chinese), 1376 - 1383.
[12]
Zhu, J. P., Dong, L. G., and Cheng, J. B., 2011, Target-oriented 3D seismic optimal geometry design based on seismic illumination: Oil Geophysical Prospecting (in Chinese), 46(3), 339 - 348.
2013, Vol. 10 
