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Arcis Newsletter, Seismic Matters, May 2006

Thin-bed Reflectivity Inversion
By Satinder Chopra, John Castagna and Oleg Portniaguine

Thin-bed reflectivity inversion is a form of spectral inversion which produces sparse reflectivity estimates that resolve thin layers below the tuning thickness. The process differs from other inversions in that it is driven by geological rather than mathematical assumptions, and is based on aspects of the local frequency spectrum obtained using spectral decomposition of various types. The resolution of thin-bed reflectivity inversion is far superior to the input data and so makes it very suitable for characterization of thin reservoirs. Read More...

 Practical Aspects of Curvature Computations from Seismic Horizons
By Satinder Chopra, Kurt Marfurt and Vladimir Alexeev

Identifying subtle faults at or below the limits of seismic resolution and predicting fractures associated with folds and flexures is one of the major objectives of careful seismic interpretation. With the common use of 3D seismic in the late 1980s, 1st derivative based horizon dip magnitude and dip azimuth were found to enhance faults that were otherwise difficult to see. More recently, 2nd derivative based curvature maps have carried this process a step further. Recently, horizon-based curvature computation has become available in the commercial workstation environment, putting these tools in the hands of geoscientists who do not have access to processing software and do not have the time nor inclination to program.  Read More...

New Seismic Data Available for 2006

In the first quarter of 2006 Arcis acquired 6 new 3D surveys, totaling 1,068 km2 of new data. View Map...
  • Minehead 3D - available now
  • West Pembina IV 3D - on exclusive until August
  • Obed 3D - on exclusive until August
  • Marsh Creek 3D - on exclusive until October
  • West Pembina II 3D - on exclusive until November
  • Pickell 3D - on exclusive until November

Several other strategic locations are currently under consideration for 2006.

Joint Convention Presentations and Posters

  • Benefiting from 3D AVO; presented by Yong Xu, May 16th (Tuesday) 11:30 to 12:00 pm, View Abstract...
  • Wave Equation Depth Migration with Image Gathers in Offset Domain; presented by Jianhua Pan, May 15th (Monday) 11:00 to 11:30 AM, View Abstract...
  • Seismic Resolution and Thin Bed Reflectivity; poster by Satinder Chopra and John Castagna, View Abstract...
  • Curvature Attribute Applications to Seismic Data; poster by Satinder Chopra, Kurt Marfurt and Vladimir Alexeev, View Abstract...
  • Spectral Decomposition Applications; poster by Satinder Chopra, John Castagna, and Vladimir Alexeev, View Abstract...

We hope you enjoyed the first issue of Seismic Matters. If you have comments or do not wish to receive the quarterly newsletter, please email jmahaffy@arcis.com.
RECENT ARTICLES

Velocity Determination for Pore Pressure Prediction, by Satinder Chopra and Alan Huffman, CSEG Recorder, April 2006. Read Article...

Seismic Attributes - A Promising Aid for Geologic Prediction, by Satinder Chopra and Kurt Marfurt, CSEG Recorder, Special Edition 2006. Read Article...

Comparison of Spectral Decomposition Methods, by John Castagna and Shengjie Sun, First Break, March 2006. Read Article...

Searching for Similarity in a Slab of Seismic Data, by Stephen Hill, Kurt Marfurt and Satinder Chopra, The Leading Edge, February 2006. Read Article...

Seismic Resolution and Thin-bed Reflectivity Inversion, by Satinder Chopra, John Castagna and Oleg Portniaguine, CSEG Recorder, January 2006. Read Article...

Azimuth Moveout Transformation - Some Promising Applications from Western Canada, by Satinder Chopra and Dan Negut, CSEG Recorder, January 2006. Read Article...

JOINT CONVENTION

Visit Arcis' new booth. Look for the spectacular light show.