Diffraction imaging for basement fault-fracture prediction: Application to an oil field in Cuu Long basin
Abstract
Improvement to the image of fractured granite basements is among the most sought-after goals for processing seismic data in Cuu Long basin, the most proliferous petroleum basin. Unlike a clear layering structure of the sediment, fuzzy images of the granite basement are often the source of confusion for interpreters to identify which structures are presented inside it. In such a low signal-to-noise ratio (SNR) environment, extracting geological information such as fault systems and fracture becomes challenging. In this study, diffraction imaging is employed in an effort to identify and enhance the fault system inside the basement. The comparison of the study result with various standard post-stack attribute approaches shows the effectiveness of the diffraction imaging method.
References
Satinder Chopra and Kurt J. Marfurt, Seismic attributes for prospect identification and reservoir characterization. Society of Exploration Geophysicists, 2007. DOI: 10.1190/1.9781560801900.
Mike S. Bahorich, John Lopez, Norman Lopez, E. Nissen, and Alan Poole, "Stratigraphic and structural interpretation with 3-D coherence", SEG Technical Program Expanded Abstracts 1995. DOI: 10.1190/1.1887435.
Gijs C. Fehmers and Christian F.W. Hocker, "Fast structural interpretation with structure-oriented filtering", Geophysics, Vol. 68, No. 4, 2003. DOI: 10.1190/1.1598121.
Richard J. Lisle, "Detection of zones of abnormal strains in structures using Gaussian curvature analysis", AAPG Bulletin, Vol. 78, No. 12, pp. 1811 - 1819, 1994.
William Schmidt, Bui Huy Hoang, James W. Handschy, Vu Trong Hai, Trinh Xuan Cuong, and Nguyen Thanh Tung, "Tectonic evolution and regional setting of Cuu Long basin, Vietnam", Tectonophysics, Vol. 757, pp. 36 - 57, 2019. DOI: 10.1016/j.tecto.2019.03.001.
K.D. Klem Musatov and A.M. Aizenberg, "The ray method and the theory of edge waves", Geophysical Journal of the Royal Astronomical Society (Geophysical Journal International), Vol. 79, No. 1, pp. 35 - 50, 1984. DOI: 10.1111/j.1365-246X.1984.tb02839.x.
E. Landa, V. Shtivelman, and B. Gelchinsky, "A method for detection of diffracted waves on commonoffset sections", Geophysical Prospecting, Vol. 35, No. 4, pp. 359 - 373, 1987. DOI: 10.1111/j.1365-2478.1987.tb00823.x.
Sergey Fomel, "Applications of plane-wave destruction filters", Geophysics, Vol. 67, No. 10, pp. 1946 - 1960, 2002. DOI: 10.1190/1.1527095.
Boris Gelchinsky, Alexander Berkovich, and Shmariahu Keydar, "Multifocusing homeomorphic imaging. Part 1: Basic concepts and formulas", Journal of Applied Geophysics, Vol. 42, pp. 229 - 242, 1999.
O.L. Kouznetsov, I.A. Chirkin, I.S. Faizulline, B.Y. Meltchouk, I.S. Dzhafarov, Y.A. Kuryanov, V.N. Nesterov, S.I. Slenkin, G.V. Kashirin, Z.H. Mollaev, and A.P. Kozub, "Improving the efficiency of seismic exploration by applying 3D mapping of open fracturing by the SVSL method", Conference Proceedings, 64th EAGE Conference & Exhibition, Florence, Italy, 27 - 30 May, 2002. DOI: 10.3997/2214-4609-pdb.5.G038.
Luke Decker, Dmitrii Merzlikin, and Sergey Fomel, "Diffraction imaging and time-migration velocity analysis using oriented velocity continuation", Geophysics, Vol. 82, No. 2, 2017. DOI: 10.1190/geo2016-0141.1.
Igor Ravve, Zvi Koren, Allon Bartana, and Dan Kosloff, "Local angle domain in seismic imaging", 69th EAGE Conference and Exhibition incorporating SPE EUROPEC, 11 - 14 June, 2007. DOI: 10.3997/2214-4609.201401932.
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