Abstract：To improve the precision and the efficiency of amplitude curvature calculation, we propose in this paper a new algorithm using dip-scanning and root-mean-square amplitude weighting. Conventional amplitude curvature calculations need covariance matrix and its eigenvalue calculations. But in our algorithm amplitude curvature is weighted by the central trace's root-mean-square amplitude avoiding coherent amplitude weighting and coherent energy weighting. Real data tests show that the proposed algorithm has both higher precision and higher efficiency.
Lisle R J. Detection of zones of abnormal strains in structures using Gaussian curvature analysis. AAPG Bulletin, 1994, 78(12): 1811-1819.
[2]
Roberts A. Curvature attributes and their applica-tion to 3D interpreted horizons. First Break, 2001,19(2): 85-100.
[3]
Al-Dossary S, Marfurt K J. 3D volumetric multispectral estimates of reflector curvature and rotation.Geo-physics, 2006, 71(5): 41-51.
[4]
Di H, Gao D. A new algorithm for evaluating 3D curvature and curvature gradient for improved fracture detection. Computers & Geosciences,2014,70(9):15-25.
[5]
Luo Y, Higgs W G, Kowalik W S. Edge detection and stratigraphic analysis using 3D seismic data. SEG Technical Program Expanded Abstracts,1996, 15: 324-327.
[6]
Radovich B J, Oliveros R B. 3-D sequence interpretation of seismic instantaneous attributes from the Gorgon field. The Leading Edge, 1998, 17(9): 1286-1293.
[7]
Marfurt K J, Kirlin R L. 3-D broad-band estimates of reflector dip and amplitude. Geophysics, 2000,65(1):304-320.
[8]
Marfurt K J. Robust estimates of 3D reflector dip and azimuth. Geophysics, 2006, 71(4): 29-40.
[9]
Chopra S, Marfurt K J. Structural Curvature versus Amplitude Curvature. The Leading Edge, 2011,32(2):980-984.
[10]
Gersztenkorn A, Marfurt K J. Eigenstructure-based coherence computations as an aid to 3-D structural and stratigraphic mapping. Geophysics, 1999, 64(5): 1468-1479.
