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.

When All Data Are Not Created Equally  
By Bob Hardage / March 2012

Tidewater areas can be difficult places to acquire consistent-quality seismic data, because different sources have to be used across exposed land surfaces than what are used across shallow-water areas.

Multicomponent Seismic Proves Its Value  
By Satinder Chopra / February 2012

A fundamental thesis of elastic wavefield seismic stratigraphy (or multicomponent seismic stratigraphy) is that S-wave seismic data have equal value to P-wave data for geological interpretation.

The Final Touch: Attributes Prove Their Worth  
By Satinder Chopra / January 2012

Seismic stratigraphy requires interpreters to analyze the geometrical configurations and termination patterns of seismic reflection events.

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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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