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APPLIED GEOPHYSICS  2017, Vol. 14 Issue (3): 399-405    DOI: 10.1007/s11770-017-0634-9
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Diffraction separation by plane-wave prediction filtering
Kong Xue1, Wang De-Ying2, Li Zhen-Chun3, Zhang Rui-Xiang1, and Hu Qiu-Yuan1
1. College of Petroleum Engineering, Shengli College, China University of Petroleum, Dongying 257061, China.
2. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
3. School of Geosciences, China University of Petroleum (Hua Dong), Qingdao 266555, China.
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Abstract Seismic data processing typically deals with seismic wave reflections and neglects wave diffraction that affect the resolution. As a general rule, wave diffractions are treated as noise in seismic data processing. However, wave diffractions generally originate from geological structures, such as fractures, karst caves, and faults. The wave diffraction energy is much weaker than that of the reflections. Therefore, even if wave diffractions can be traced back to their origin, their energy is masked by that of the reflections. Separating and imaging diffractions and reflections can improve the imaging accuracy of diffractive targets. Based on the geometrical differences between reflections and diffractions on the plane-wave record; that is, reflections are quasi-linear and diffractions are quasi-hyperbolic, we use plane-wave prediction filtering to separate the wave diffractions. First, we estimate the local slope of the seismic event using plane-wave destruction filtering and, then, we predict and extract the wave reflections based on the local slope. Thus, we obtain the diffracted wavefield by directly subtracting the reflected wavefield from the entire wavefield. Finally, we image the diffracted wavefield and obtain high-resolution diffractive target results. 2D SEG salt model data suggest that the plane-wave prediction filtering eliminates the phase reversal in the plane-wave destruction filtering and maintains the original wavefield phase, improving the accuracy of imaging heterogeneous objects.
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Key wordsPlane wave   prediction filter   separation   diffraction     
Received: 2016-10-26;

This research was funded jointly by the National Natural Science Foundation of China (No. 41104069), the National Key Basic Research Program of China (973 Program: 2011CB202402), the Shandong University Science and Technology Planning Project (No. J17KA197), and the College of Petroleum Engineering in Shengli College China University of Petroleum “Chunhui Project” (No. KY2015003).

Cite this article:   
. Diffraction separation by plane-wave prediction filtering[J]. APPLIED GEOPHYSICS, 2017, 14(3): 399-405.
[1] Bansal, R., and Imhof, M. G., 2005, Diffraction enhancement in prestack seismic data: Geophysics, 70(3), V73−V79.
[2] Burnett, W. A., Klokov, A., Fomel, S., et al., 2015, Seismic diffraction interpretation at Piceance Creek: Interpretation, 3(1), SF1−SF14.
[3] Cheng, J. B., Wang, H. Z., and Ma, Z. T., 2001, Pre-stack depth migration with finite-difference method in frequency-space domain: Chinese Journal of Geophysics, 4(3), 389−395.
[4] Decker, L., and Klokov, A., 2014, Diffraction extraction by plane-wave destruction of partial images: 84th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts, 3862−3867.
[5] Decker, L., and Fomel, S., 2013, Comparison of seismic diffraction imaging techniques: plane wave destruction versus apex destruction: 83th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts, 4054−4059.
[6] Fomel, S., 2002, Applications of plane-wave destruction filters: Geophysics, 67(6), 1946−1960.
[7] Fomel, S., 2010, Predictive painting of 3-D seismic volumes: Geophysics, 75(4), A25−A30.
[8] Fomel, S., Landa, E., and Taner, M. T., 2007, Poststack velocity analysis by separation and imaging of seismic diffractions: Geophysics, 72(6), U89−U94
[9] Khaidukov, V., Landa, E., and Moser, T. J., 2004, Diffraction imaging by focusing-defocusing: An outlook on seismic superresolution: Geophysics, 69(6), 1478−1490.
[10] Klokov, A., Baina, R., and Landa, E., 2010a, Separation and imaging of seismic diffractions in dip angle domain: 72th EAGE Conference and Exhibition, Extended Abstracts, G40.
[11] Klokov, A., Baina, R., Landa, E., et al., 2010b, Diffraction imaging for fracture detection: synthetic case study: 80th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts, 3354−3358.
[12] Klokov, A., and Sergey, F., 2012, Separation and imaging of seismic diffractions using migrated dip-angle gathers: Geophysics, 77(6), S131−143.
[13] Landa, E., Fomel, S., and Reshef, M., 2008, Separation, imaging, and velocity analysis of seismic diffractions using migrated dip-angle gathers: 78th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts, 2176−2180.
[14] Landa, E., and Keydar, S., 1998, Seismic monitoring of diffraction images for detection of local heterogeneities: Geophysics, 63(3), 1093−1100.
[15] Landa, E., Shtivelman, V., and Gelchinsky, B., 1987, A method for detection of diffracted waves on common-offset sections: Geophysical Prospecting, 35(4), 359−373.
[16] Li, J. Y. and Chen, X. H., 2013, A rock-physical modeling method for carbonate reservoirs at seismic scale: Applied Geophysics, 10(1), 1−13.
[17] Li, S. J., Shao, Y., and Chen, X. Q., 2016, Anisotropic rock physics models for interpreting pore structures in carbonate reservoirs: Applied Geophysics, 13(1), 166−178.
[18] Liu, Y., Fomel, S., and Liu, G. C., 2010, Nonlinear structure-enhancing ?ltering using plane-wave prediction: Geophysical Prospecting, 58(3), 425−427.
[19] Merzlikin, D., Fomel, S., and Bona, A., 2016, Diffraction imaging using azimuthal plane-wave destruction: 86th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts, 4288−4293.
[20] Moser, T., and Howard, B. C., 2008, Diffraction imaging in depth: Geophysical Prospecting, 56(5), 627−641.
[21] Reshef, M., 2008, Interval velocity analysis in the dip-angle domain: Geophysics, 73(5), VE353−VE360.
[22] Reshef, M., and Landa, E., 2009, Post-stack velocity analysis in the dip-angle domain using diffractions: Geophysical Prospecting, 57(5), 811−821.
[23] Reshef, M., and Rüger, A., 2008, Influence of structural dip angles on interval velocity analysis: Geophysics, 73(4), U13−U18.
[24] Taner, M. T., Fomel, S., and Landa, E., 2006, Separation and imaging of seismic diffractions using plane-wave decomposition: 76th Annual International Meeting, Society of Exploration Geophysicists, Expanded Abstracts, 2401−2405.
[25] Tyiasning, S., Merzlikin, D., Cooke, D., et al., 2016, A comparison of diffraction imaging to incoherence and curvature: The Leading Edge, 35(1), 86−89.
[26] Wang, D. Y., Huang, J. P., Kong, X., et al., 2017, Improving the resolution of seismic traces based on the secondary time-frequency spectrum: Applied Geophysics, 14(2), 236−246.
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