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.

Blended Data Renders Visual Value   
By Bob Hardage / October 2011

To co-render seismic attributes means to blend two or more seismic attributes into a single, unified data display.

Deep Thinking: 4C Proves Value on Seafloor   
By Bob Hardage / September 2011

Marine 4C seismic technology was developed to assist hydrocarbon exploration and development – but 4C data have important marine engineering applications that have not been exploited.

For Fractures, P + S = Maximum Efficiency   
By Bob Hardage / August 2011

In areas where fracture-producing stress fields have been oriented at different azimuths over geologic time, there can be fracture sets of varying intensities and different orientations across a stratigraphic interval.

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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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