Kirchhoff prestack time migration method for PS waves

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C367S050000, C367S051000

Reexamination Certificate

active

07447113

ABSTRACT:
A method is disclosed for migrating seismic data which includes determining travel time of a compressional wave from a source location to a scatter point, taking into account ray bending. Travel time of a shear wave from the scatter point to a receiver location is determined, taking into account ray bending at the interfaces between subsurface strata. The determined travel times are then used to migrate the seismic data. In one embodiment, the travel times take account of vertically transversely isotropic media with a vertical symmetry axis.

REFERENCES:
patent: 4415999 (1983-11-01), Moeckel et al.
patent: 4611311 (1986-09-01), Frasier
patent: 4745585 (1988-05-01), Larner
patent: 4888742 (1989-12-01), Beasley
patent: 5596547 (1997-01-01), Bancroft et al.
patent: 5610875 (1997-03-01), Gaiser
patent: 6081482 (2000-06-01), Bevc
patent: 6292754 (2001-09-01), Thomsen
patent: 6466873 (2002-10-01), Ren et al.
patent: 6785612 (2004-08-01), Zhang
patent: 2002/0105857 (2002-08-01), Ren et al.
patent: 2004/0024530 (2004-02-01), Wang et al.
Dai, et al. “Anisotropic migration and model building for 4C seismic data: A case study from Alba.” 71stAnnual SEG Int'l Meeting. Sep. 2001.
Li, et al. “Converted-wave traveltime equations in layered anisotropic media: An overview.” EAGE 65thConference and Exhibition. Jun. 2003.
Wang, et al. “Converted-wave prestack time migration for VTI media.” EAGE 64thConference and Exhibition. May 2002.
Wu, et al. “Imaging steep sub-salt structures using converted wave paths.” SEG Int'l Exposition and Meeting. Sep. 2001.
Zhang, et al. “Velocity Update via Joint Velocity Inversion for Anisotropic Depth Migration.” SEGIE Oct. 2002.
Sun, et al. “Optimized 6th order NMO correction for long offset data.” SEG Int'l Exposition and 72ndAnnual Meeting, Salt Lake City, Utah, Oct. 6-11, 2002.
Taner, et al. “Velocity Spectra-digital Computer Derivation and Applications of Velocity Functions.” Geophysics, Dec. 1969.
Alkhalifah, Tariq. The offset-midpoint traveltime pyramid in transversely isotropic media. Geophysics, Jul.-Aug. 2000.
Jurado, et al. “Fast 3D two-point ray-tracing for traveltime tomography.” KIM Research Consortium, Jul. 2, 1998.
Alkhalifah, Tariq, “The offset-midpoint traveltime pyramid in transversely isotropic media”, Geophysics, 2000, pp. 1316-1325, vol. 65, No. 4.
Harrison, Mark, .Paul, Processing of P-SV surface-seismic data: Anisotropy analysis, dip moveout, and migration: Ph.D. Thesis, Univ. of Calgary, 1992, pp. iii-iv, Abstract.
Li, Xiang-Yang, Yuan, Jerry, “Converted-wave imaging in inhomogeneous, anisotropic media: Part 1—parameter estimation”, EAGE 63rdConference & Technical Exhibition, 2001, pp. 1-4, Expanded Abstracts, Amsterdam, The Netherlands.
Sun, Chuanwen, Ruben D. Martinez, “Amplitude preserving V(z) pre-stack Kirchhoff time migration for VTI media”, First Break, 2001, pp. 618-624, vol. 19.
Thomsen, Leon, “Converted-wave reflection seismology over inhomogeneous, anisotropic media”, Geophysics, 1999, pp. 678-690, vol. 64, No. 3.
Tsvankin, Ilya, Thomsen, Leon, “Nonhyperbolic reflection moveout in anisotropic media”, Geophysics, 1994, pp. 1290-1304, vol. 59, No. 8.
Wang, Weizhong, Pham, Long D., “Converted-wave prestack imaging and velocity analysis by pseudo-offset migration”, EAGE 63rdConference & Technical Exhibition, 2001, L-12, Expanded Abstracts, Amsterdam, The Netherlands.
Yuan, Jerry, Li, Xiang-Yang, Ziolkowski, Anton, “Converted-wave moveout analysis in layered anisotropic media—a case study”, EAGE 63RDConference & Technical Exhibition, 2001, L-27, Expanded Abstracts, Amsterdam, The Netherlands.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Kirchhoff prestack time migration method for PS waves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Kirchhoff prestack time migration method for PS waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kirchhoff prestack time migration method for PS waves will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4029346

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.