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Events

Advances in Geophysics

February 05, 2019
Broadcast time: 9:00 AM CT
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Presented by:  Alistair Downie, Director Product Management
Featured Domain:  Seismic Processing and Imaging
Featured Products:  Echos™, GeoDepth

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Abstract

The ability to use seismic data continues to improve through a combination of improvements to seismic acquisition, processing, imaging, and inversion methods. High-resolution seismic processing, imaging, and modeling deliverables for prospecting can be achieved by carefully combining technologies in all these domains, with particularly attention paid to the behavior of seismic waves in the subsurface. 

The development and implementation of new and improved algorithms that deal with different aspects of the recorded seismic wavefield are facilitated by advances in computing technology. These algorithms become building blocks for comprehensive workflows that contribute to seismic acquisition productivity, improved seismic imaging of the subsurface, higher-resolution subsurface models, and refinements in seismic-based methods for quantitative subsurface property assessment.  
 
In recent years, several advances in geophysical technology have significantly contributed to these improvements.  These include: Surface wave modeling and attenuation, innovations in 5D data regularization, vibroseis harmonic noise attenuation, improvements in tomographic inversion, and improvements in the application of machine learning.
 
This presentation will highlight some of these advances, including:
  • Model-based ground roll attenuation by near surface elastic parameter estimation, surface wave modeling, and adaptive subtraction.
  • The use of radon-based data modeling in 5D data reconstruction, for improved data modeling and handling of aliasing.
  • Vibroseis harmonic noise attenuation, which can also contribute to improved seismic acquisition productivity. 
  • Tomography improvements, including optimizations that enable higher-resolution velocity models.
These technologies provide the basis for improved use of seismic data from new seismic acquisition programs, while also making seismic data more relevant for legacy seismic acquisitions.