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3609
 

In this study, seismic models and a Starfak and Tiger Shoal fields data set in the Gulf of Mexico Basin are used to investigate uncertainties caused by the frequency dependence of seismic data and solutions for avoiding pitfalls in seismic-stratigraphic and facies interpretation. Seismic amplitude and instantaneous attributes, along with stratigraphic interpretation of these attributes, are controlled by seismic interference, or tuning, between thin geologic units. Seismic-tuning effects include thickness tuning and frequency tuning, which cause nonlinear variations of reflection amplitude and instantaneous seismic attributes with thickness and/or data frequency. Seismic modeling shows that, whereas thickness tuning determines seismic-interference patterns and, therefore, occurrence of seismic events and seismic facies in layered rock, frequency tuning may further influence the nature of the correlation of seismic data and geologic time and modify seismic facies. Frequency dependence offers a new dimension of seismic data, which has not been fully used in seismic interpretation of geology.

Field-data examples demonstrate that a stratigraphic formation is typically composed of lithofacies of varying thicknesses, and a broadband, stacked seismic data set is not necessarily optimal for stratigraphic and facies interpretation. Although it is difficult to predict correct frequency components for interpretation of not-yet-known geologic targets, local geologic models and well data can be used to optimize the frequency components of seismic data to a certain degree and intentionally modify seismic-interference patterns and seismic facies for better seismic interpretation of geologic surfaces, sediment-dispersal patterns, geomorphology, and sequence stratigraphy.

2100
 

Added to the "first-time-ever” list was the announcing of paper and poster awards at the end of the event.

2032
 
Explorer Emphasis Article

Closest of trends: Geoscientists experienced a huge “aha!” moment that started with the realization that Pennsylvania’s Marcellus Shale and Texas’ Eagle Ford Shale have a lot in common.

2012
 

A new, specially funded, designated speaker has been added to the prestigious AAPG Distinguished Lecture program for the 2012-13 season.

1982
 
Explorer Article

Spreading the word: Nine speakers have been selected for AAPG’s prestigiousDistinguished Lecture program for the 2012-13 North American tours.

1855
 
Explorer Article

The world’s best classroom? The beautiful and dramatic outcrops that dominate the western Ireland’s Clare and Kerry counties have provided enormous value as analogs to thousands of geoscientists – and new lessons are still being learned there.

2384
 
Explorer Article

A popular part of the AAPG education department's many offerings is the compelling and often exotic field seminar program – and right now AAPG is looking for new leaders and fresh ideas for areas to visit and study.

2228
 
Explorer Article

A Fairway to paradise? Nova Scotia’s offshore energy industry is in the global spotlight after an enticing assessment of resources in the Scotian Basin.

2173
 
Explorer Article

A new hydrocarbon play in Kansas and Oklahoma is drawing interest to possibilities in several Mississippian formations.

2873
 
Explorer Article

Shale gas potential heats up in south Texas. Think Eagle Ford shale, or take a drive down U.S. Highway 90 and see for yourself.

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Online Training
10 May, 2012 10 May, 2012 1486
 
10 May 2012

Recognition and Correlation of the Eagle Ford, Austin Formations in South Texas can be enhanced with High Resolution Biostratigraphy, fossil abundance peaks and Maximum Flooding Surfaces correlated to Upper Cretaceous sequence stratigraphic cycle chart after Gradstein, 2010.

17 February, 2011 17 February, 2011 1469
 
17 February 2011

This presentation is designed for exploration/production geologists and geological managers or reservoir engineers.

14 February, 3000 14 February, 3000 7817
 
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