Time to Pick? No Need to Fear ‘Seismophobia’  
By Satinder Chopra / January 2013

While seismic processing shops usually are the “professionals” when it comes to velocity analysis, the interpreter may have greater insight into the cause of the poor data quality.

A Solid Step Toward Accurate Interpretations  
By Satinder Chopra / December 2012

This month’s column deals with quantifying facies variation.

Waveform Classification Proves Itself a Valuable Tool  
By Satinder Chopra / November 2012

This month’s column deals with seismic waveforms and facies classification.

An ‘Elastic Impedance’ Approach  
By Satinder Chopra / October 2012

A detailed investigation of seismic amplitudes can yield information pertaining to lithological variation in subsurface sedimentary rock formations and the existence and extent of some hydrocarbon zones.

An Effective Way to Find Formation Brittleness  
By Satinder Chopra / September 2012

The discrimination of fluid content and lithology in a reservoir is an important characterization that has a bearing on reservoir development and its management.

In Overthrust Settings, Tie, Tie (2-D) Again  
By Satinder Chopra / August 2012

In the rough terrain of overthrust settings, 2-D seismic data continues to be a standard tool for subsurface mapping – and not only because of economic reasons. Two-D and 3-D seismic surveys are complementary in land environments, because each data type has its own strength and weakness.

Differential Compaction: 3-D Attributes Can Help  
By Satinder Chopra / July 2012

Differential compaction has been used by seismic interpreters to map features of exploration interest, such as carbonate build-ups, fans and fluvial channels.

Seismic and Boundaries: Is It Fluid or Rock?  
By Bob Hardage / June 2012

Starting in the 1980s people began to see that an efficient way to answer this question was to acquire both P-wave and S-wave seismic data across a rock/fluid system that had to be interpreted.

Geological Factors Can Lead to Poor Matches  
By Bob Hardage / May 2012

The traditional tool interpreters have used to establish correspondences between subsurface stratigraphy and surface-measured seismic data has been synthetic seismograms calculated from well log data.

Wipeout Zones – Blame the Rocks  
By Bob Hardage / April 2012

A hydrocarbon exploration application that has caused multicomponent seismic data to be acquired across several offshore areas is the ability of S-wave modes to image geology inside broad, thick intervals of gas-charged sediment where P-P seismic data show no usable reflections.

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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

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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