Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2011-05-31
2011-05-31
Hellner, Mark (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C367S057000
Reexamination Certificate
active
07952960
ABSTRACT:
The methods described herein are conceptually similar to classical migration/imaging for surface seismic data. However, instead of using computed (estimated) Green's functions in the imaging process, the instant invention utilizes measured (near-exact) Green's functions from VSP data to image the surface seismic data. Although the instant invention is best utilized where the velocity profile is approximately 1D (i.e., v(z)), the methods disclosed herein can also be extended to instances where there are some lateral velocity variations. Under these conditions, the instant invention allows for imaging surface seismic data and ‘self-imaging’ VSP data without first having to estimate a velocity model. The measurements obtained from the VSP data can also be used as a tool for calibrating computed Green's functions and migration operators.
REFERENCES:
patent: 5696735 (1997-12-01), Krebs
patent: 5742560 (1998-04-01), Krebs
patent: 6002642 (1999-12-01), Krebs
patent: 7376539 (2008-05-01), Lecomte
patent: 7508733 (2009-03-01), Haldorsen
patent: 2009/0043545 (2009-02-01), van Manen et al.
patent: 2009/0323471 (2009-12-01), Wang
Brandsberg-Dahl, et al., “Migration of Surface Seismic Data With VST Green's Function”, Jun. 2007, Publisher: The Leading Edge, Published in: US.
Brands-Berg Dahl, et al., “Surface Seismic Imaging With VSP Green's Functions”, Jun. 11, 2007, Publisher: Eage 69th Conference, Published in: GB.
Krebs, et al., “Accurate Migration Using Offset-Checkshot Surveys”, 1995, pp. 1186-1188, Publisher: Ann. Internat. Mtg. Soc. Expl. Geophys., Expanded Abstracts, Published in: US.
Schuster, Gerard T., “Reverse-Time Migration = Generalized Diffraction Stack Migration”, Oct. 6, 2002, Publisher: SEG Int'l Exposition and 72nd Annual Meeting, Published in: US.
Brandsberg-Dahl Sverre
Hornby Brian E.
BP Corporation North America Inc.
Hellner Mark
Shung Albert K.
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