Integrated Data Enhance Dolomite Mapping  
By Ritesh Sharma, Satinder Chopra, Amit Ray / September 2014
The purpose of this article is to describe a workflow for discriminating limestones and dolomites, and to map the lateral extent of dolomite reservoir rocks that have a thickness below the seismic resolution.
Spectral Decomposition for 3-D Geomodeling  
By Brad Wallet / August 2014
In recent years, a number of workflows have been developed to use spectral decomposition for 3-D geomodeling to extract architectural elements such as channels.
Quantifying Confidence in Horizon-Picking  
By Kurt Marfurt / July 2014
Risk analysis is a crucial task in making drilling decisions and involves many factors, such as well logs, modeling results, production maps and interpretation quality. In his book on 3-D seismic interpretation, AAPG award-winning member Alistair Brown presents a workflow for the quantification of interpretation confidence.
Seeing Is Believing: GPR Enhances Analogs  
By John McBride, Colby Hazard, Scott Ritter, Thomas Morris, David Tingey, Bill Keach, Jani Radebaugh, Clayton Chandler, Kari Arnold, Gene Wolfe / June 2014

Steeply dipping bedforms and bed sets often develop where sediment accumulates and migrates, and are expressed as clinoform patterns on seismic data. Ground-penetrating radar (GPR) provides ultra-high-resolution images of the internal structure of these sediment accumulations.

Am I Blue? Finding the Right (Spectral) Balance  
By Kurt Marfurt, Marcílio Matos / May 2014

Seismic interpreters have always desired to extract as much vertical resolution from their data as possible – and that desire has only increased with the need to accurately land horizontal wells within target lithologies that fall at or below the limits of seismic resolution.

Extracting Information From Texture Attributes  
By Satinder Chopra, Kurt Marfurt / April 2014

There are a number of seismic attributes that are derived from seismic amplitudes to facilitate the interpretation of geologic structure, stratigraphy and rock/pore fluid properties.

So Many Challenges – But So Many Choices  
By Satinder Chopra, Kurt Marfurt / March 2014

The previous three Geophysical Corner articles have focused on the spectral decomposition of seismic data, describing some of the methods and their applications. This month we add another one on the same topic, showing the comparative performance of some of the methods commonly available in the interactive interpretation software packages.

Effective Ways to Eliminate Side-Lobe Effects   
By Satinder Chopra / February 2014

It is no secret that geologists do not fully trust all the events shown in pretty seismic pictures.

Finding the Value in Spectral Decomposition  
By Rongfeng Zhang / January 2014

When we see a rainbow, it is visually appealing – and the natural tendency is to appreciate its aesthetic qualities rather than study it on an analytical basis, as frequency sub-bands decomposed from white light.

Spectral Decomposition’s Analytical Value  
By Satinder Chopra / December 2013

Stratigraphers use seismic data in two major ways.

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Geophysical Corner

Geophysical Corner - Satinder Chopra
Satinder Chopra, chief geophysicist (reservoir), at Arcis Seismic Solutions, Calgary, Canada, began serving as the editor of the Geophysical Corner column in 2012.

The Geophysical Corner is a regular column in the EXPLORER that features geophysical case studies, techniques and application to the petroleum industry.

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Geophysical Corner - Bob Hardage
Bob A. Hardage, senior research scientist at the Bureau of Economic Geology, the University of Texas at Austin served as editor of the Geophysical Corner from 2006 to 2011.

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