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.

Adding Texture Attributes to the 3-D Mix  
By Paul DeGroot, Nanne Hemstra, Farrukh Qayyum / November 2013

The attributes in question were derived from a HorizonCube, an interpretation technique that provides fully interpreted seismic volumes where horizons are automatically tracked between a given set of framework horizons and faults.

Let’s Get Small: Benefits of Reduced Bin Size  
By Satinder Chopra / October 2013

Ideally, seismic data should be acquired at high spatial and temporal sampling, so that the small subsurface features of interest can be clearly seen on the seismic display.

A New Approach to Stratigraphic Interpretation  
By Satinder Chopra / September 2013

This article introduces a new set of seismic attributes that play an important role in extracting detailed stratigraphic information from seismic data.

Quantitative Curvature Analysis: A Case Study  
By Satinder Chopra / August 2013

Last month in this space we analyzed the relations of fracture patterns and layer curvature in clay models. This month we examine these relations in a central Oklahoma field developed by Pathfinder Exploration, Norman, Okla.

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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.

Geophysical Corner

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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