Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Peter W. Cary"'
Publikováno v:
SEG Technical Program Expanded Abstracts 2012.
Two methods have recently been published for carrying out nonstationary spectral broadening (and narrowing) of PS data after it has been mapped into the PP time domain. We present a study which investigates these two papers by Bansal & Matheney (2010
Autor:
Peter W. Cary, Mike Perz
Publikováno v:
SEG Technical Program Expanded Abstracts 2012.
5D interpolation methods have proven to be capable of overcoming the constraints of actual data acquisition in a wide range of situations. However, in general the interpolation methods work by making some type of assumption about the simplicity or sp
Autor:
Peter W. Cary
Publikováno v:
SEG Technical Program Expanded Abstracts 2011.
5D interpolation with the MWNI algorithm has become a commonly used tool in the processing of land 3D seismic surveys because of its ability to regularize acquisition geometries before processes such as prestack time migration. Claims that it is able
Autor:
Peter W. Cary, Changjun Zhang
Publikováno v:
SEG Technical Program Expanded Abstracts 2010.
Summary Converted–wave prestack time migration is an important step in multi-component seismic data processing. Technically, its implementation is similar to P-wave migration, but P-S migration is obviously different because the down-going P-wave a
Autor:
Changjun Zhang, Peter W. Cary
Publikováno v:
11th International Congress of the Brazilian Geophysical Society & EXPOGEF 2009, Salvador, Bahia, Brazil, 24-28 August 2009.
Ground roll attenuation is an important step in seismic data processing. We implement a procedure to eliminate ground roll from seismic data that is based on eigen-images. We use singular-value decomposition (SVD) to distinguish between signal and no
Publikováno v:
SEG Technical Program Expanded Abstracts 2009.
Autor:
Peter W. Cary
Publikováno v:
SEG Technical Program Expanded Abstracts 2006.
Autor:
Peter W. Cary, Don C. Lawton
Publikováno v:
SEG Technical Program Expanded Abstracts 2003.
It is common practice in seismic survey design to take fold as the number of traces with midpoints within each CDP bin. This corresponds to the way in which the fold of a stacked trace is normally computed in processing. Unfortunately, this method co
Autor:
Peter W. Cary
Publikováno v:
SEG Technical Program Expanded Abstracts 2002.
Summary Observations of shear-wave splitting from converted-wave seismic surveys are becoming common. When interpreting 3-C data for shear-wave splitting, it is important to be able to distinguish true indicators of shear-wave splitting from false on
Autor:
Peter W. Cary, Xinxiang Li
Publikováno v:
SEG Technical Program Expanded Abstracts 2001.
The fact that irregular spatial sampling of 3D surveys can lead to processing artifacts has been recognized for some time (Gardner and Canning, 1994), and methods such as least-squares DMO, azimuth moveout and migration are beginning to be used to ov