Faster shot-record depth migrations using phase encoding

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Phase encoding of shot records provides a means of imaging a number of shots within a single migration. This results in a reduction in the required computation for a complete image, a reduction by the number of shots used in each individual migration, trading this increase in speed for additional noise in the resulting image. Some methods for phase encoding have been shown to limit this noise to a tolerable range when combining several shots, enabling speed ups of a factor of a few. In this paper, the authors present a use of phase encoding which allows faster imaging by ... continued below

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4 p.

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Morton, S. A. & Ober, C. C. August 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 21 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Phase encoding of shot records provides a means of imaging a number of shots within a single migration. This results in a reduction in the required computation for a complete image, a reduction by the number of shots used in each individual migration, trading this increase in speed for additional noise in the resulting image. Some methods for phase encoding have been shown to limit this noise to a tolerable range when combining several shots, enabling speed ups of a factor of a few. In this paper, the authors present a use of phase encoding which allows faster imaging by an order of magnitude or more, with the additional benefit that the individual migrations can be stopped whenever the answer is good enough. This approach may ultimately render 3-D frequency-domain prestack depth migration cost effective.

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4 p.

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OSTI as DE98006178

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  • Society of Exploration Geophysicists (SEG) annual meeting, New Orleans, LA (United States), 13-17 Sep 1998

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  • Other: DE98006178
  • Report No.: SAND--98-1873C
  • Report No.: CONF-980913--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 656598
  • Archival Resource Key: ark:/67531/metadc710863

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 13, 2016, 1:51 p.m.

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Morton, S. A. & Ober, C. C. Faster shot-record depth migrations using phase encoding, article, August 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710863/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.