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AAPG ICE Barcelona 2016: Lithostatic-load effects in geologically constrained model building for foothills anisotropic seismic imaging

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Vestrum, R.W., Cameron, G.H., and Vestrum, Z.E., 2016, Lithostatic-load effects in geologically constrained model building for foothills anisotropic seismic imaging. AAPG ICE, Barcelona, Spain, 325-325.

  • Lithostatic load is another geologic constraint we may apply to areas of low signal and high complexity
  • We create more lithologically consistent velocity models by separating out compression effect
  • More consistent models improves 3D mapping from 2D lines

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EAGE Madrid 2015: Creating a 3D Geologic Model for 2D Depth Migration in the Peruvian Andes

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Vestrum, R.W., Vilca, J., Di Guilo Colimberti, M., 2015, Creating a 3D Geologic Model for 2D Depth Migration in the Peruvian Andes, 2015 EAGE Conf & Exhibition, Madrid, Spain.

  • Consistent velocity model across multiple 2D lines by building the velocity model in 3D
  • Interpretive 3D velocity model minimized misties at line intersections
  • Final PSDM results removed subthrust velocity pull-up

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IGC Istanbul 2012: 2D case history from southern Turkey

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Vestrum, R.W., Layzell, M., and Gittins, J., 2012, Seismic imaging and interpretation over Antep Block, southeast Turkey: Istanbul Internat. Geophys. Conf., Istanbul, Turkey, 17-19 September 2012.

  • Time and depth imaging of 2D data over extensional tectonics.
  • Highlights importance of collaboration between interpretation and processing teams.

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2009 First Break article illustrates our focus on geophysics fundamentals

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Vestrum, R.W., and Gittins, J.M., 2009, Technologies from foothills seismic imaging: replacements or complements?: First Break, 27, no. 2, 61-66.

  • The editor describes this paper: “Our land seismic section begins with a provocative article challenging the assumption that only new technologies will do.”
  • Sven Trietel suggests that this philosophical discussion “ought to be made ‘must’ reading for any newcomer to our game.”

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2009 AAPG Convention case history from Colombia with Isabel Florez at Hocol

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Vestrum, R.W., Florez, I.C., and Gittins, J.G., 2009, Anisotropic depth migration in the Colombian Llanos Foothills as a key to understanding the structure in depth: 2009 AAPG ACE, Denver, USA.

  • This case history shows the unpredictable nature of imaging below for lateral-velocity heterogeneity and seismic anisotropy. The surprise ending shows how the imaged structures move as we correct for each wave-propagation effect.

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2007 CSPG CSEG Convention paper on geoscience integration
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Vestrum, R.W., 2007, Geoscience integration and interpretive model building to overcome seismic imaging problems in foothills environments: 2007 CSPG CSEG Convention, Calgary, Canada.

  • Originally compiled for an ACGGP dinner in Bogotá in 2006.

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2005 CSEG paper on interpretive input to depth migration
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Vestrum, R.W., 2005, Interpretive input to Foothills depth migration: Natnl. Mtg., Can. Soc. Expl. Geophys.

  • Explains how the seismic interpreter can best contribute to a depth-migration project.

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2005 CSEG paper on plains depth imaging
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Vestrum, R.W., Link, B., and Mathewson, J., Why does depth migration work so well in the plains?: 2005 Natnl. Mtg., Can. Soc. Expl. Geophys.

  • Technology overview with data examples from four competing seismic-processing shops.

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Rob Vestrum’s PhD thesis from University of Calgary

  • This University of Calgary PhD thesis won the John Kendall Doctoral Thesis Award for top PhD thesis across all departments in the Faculty of Science at the University of Calgary in 2003.

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Early TTI imaging paper, published in Geophysics in 1999

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Vestrum, R.W., Lawton, D.C., and Schmid, R.S., 1999, Imaging structures below dipping TI media: Geophysics, 64, no. 4, 1239-1246.

  • This early paper on anisotropic depth imaging in the foothills earned Honorable Mention for Best Paper in Geophysics Volume 64.

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