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Geophysical Corner

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.

Euler Curvature Can Be a Calculated Success   
By Bob Hardage / December 2011

Several (12, we think) types of seismic-based curvature attributes have been introduced the last few years – and of these, the most-positive and the most-negative curvatures described in last month’s article are the most popular.

Curvature Computations Enhance Exploration   
By Satinder Chopra, Kurt Marfurt / November 2011

This month's Geophysical Corner deals with a comparison of structural and amplitude curvatures.

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Geophysical Corner

Geophysical Corner - Satinder Chopra
Satinder Chopra, award-winning chief geophysicist (reservoir), at Arcis Seismic Solutions, Calgary, Canada, and a past AAPG-SEG Joint Distinguished Lecturer 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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