Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1998-04-27
1999-12-07
Oda, Christine K.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 51, 367 52, 367 53, 364421, G01V 128
Patent
active
059994886
ABSTRACT:
An improved method for eliminating reflections from artificial model boundaries encountered in finite-difference acoustic wave propagation computations is based on applying two different boundary conditions at the artificial boundary. In this method one boundary condition generates reflections having the same polarity as the incident acoustic wave, and the other boundary condition generates reflections with opposite polarity. To apply the improved method simply compute both boundary conditions on a small narrow region adjacent the artificial boundary on a separate set of grids and average the two solutions.
REFERENCES:
patent: 4056803 (1977-11-01), White et al.
patent: 4464737 (1984-08-01), Pann
patent: 4745585 (1988-05-01), Larner
patent: 4888742 (1989-12-01), Beasley
patent: 4943950 (1990-07-01), Beasley et al.
patent: 4953130 (1990-08-01), Dablin
patent: 4953140 (1990-08-01), Dablin
patent: 5394325 (1995-02-01), Schneider et al.
patent: 5500832 (1996-03-01), Berryhill
patent: 5528557 (1996-06-01), Horn
patent: 5530679 (1996-06-01), Albertin
Mufti, I.R. et al, Geophysics, vol. 61, No. 3, pp. 776-794 "Finite-Difference Depth Migation of Exploration-Scale Seismic Data" Discloses wave equation computations using numerical techniques for reverse time migration.
Mufti, I.R., et al., Geophysics, vol. 6, No. 3. pp. 776-794 "Finite-Difference Depth Migration of Exploration-Scale Seismic Data", Jun. 1996.
Ristow, D. et al., Journal Seismic Exploration vol. 6, No. 4, pp. 367-383, Optimized Operations for 3-d Fourier Finite-Difference Migration, Oct. 1997.
M. C. Tanis et al., 67th Annual SEG INT MTG Expanded Abstracts Biographies vol. 2, pp. 1422-1425, Finite Difference Migration of 3-D Seismic Data with Parallel Alogarithm, Nov. 1997.
I. Cockshott et al., 66th Annual SEG Intl' Meeting Expanded Abstracts Biogr vol. 1, pp. 435-438, 3-D Migration Using the Fourier Finite-Difference Method, Nov. 1996.
T. Ruehl, Geophysics vol. 61, No. 5, pp. 1394-1399, Finite-Difference Migration Derived from the Kirchhoff-Helmholtz Integral, Sep. 1996.
J. E. Gaiser, 64th Annual SEG Int'l Meeting Expanded Tech Program Abstract Boigraphies pp. 1274-1277, Effective use of the Laplacian Transformation for Explicit Finite-Deifference 3-D Migration, Oct. 1994.
D. Ristow et al., "Fourier Finite-Difference Migration", Geophysics vol. 59, No. 12, pp. 1882-1893, Dec. 1994.
L.E. Berg, 54th EAEG Meeting Technical Program and Paper Abstract pp. 228-229, "Steep Dip Migration by Replacing Vertical with Horizontal Propagation", Jun. 1992.
Z. Li, US DOE Report NO DOE/ER/14079-4, Compensating Finite-Difference Errors in 3-D Migration and Modeling, Oct. 1992.
S. A. Levin, 56th Annual Society of Exploration Geiophysicists Int'l Meeting Paper No. s77, Geophysics v. 52, No. 3, p421, Parallell Finite-Difference Migration, Mar. 1987.
P. Hood, Geophysics Prospecting v 26, No. 4, pp. 773-789, "Finite Difference and Wave Number Migration", Dec. 1978.
Bogatie Goerge E.
Jolly Anthony
Oda Christine K.
Phillips Petroleum Company
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