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.

Testing Curvature’s Impact on Fractures  
By Satinder Chopra / July 2013

Fracture zones can be critical to improving or creating sufficient porosity and permeability in hydrocarbon reservoirs – with strain, along with lithology and thickness being the major controls.

Finding the Path Past 'Attribute Footprints'  
By Satinder Chopra / June 2013

Three-D seismic surveys usually are designed in a way that the subsurface features are regularly sampled in different dimensions, comprising the spatial coordinates, offsets and azimuths.

What Is Seismic Interpretation?  
By Satinder Chopra / May 2013

Seismic Interpretation is the extraction of subsurface geologic information from seismic data. On that definition we all are agreed.

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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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