13 Apr, 2013

For 3D concepts, 3D graphics work better than words


Using 3-Dimensional Images to Convey 3-Dimensional Concepts

In the Geoscience disciplines (geology and geophysics), I have found that most course participants relate particularly well to graphic images.  They are strongly visual learners. With fewer words and more images, they see more.  

For this reason, I have designed my courses to be as visual as possible. And in recent years I have carried this further to include a large number of graphic animations in my courses.  

The animation shown here from Basic Geophysics demonstrates the reflection and transmission of the seismic wavelet. Seismic energy reflected from a lithologic interface heads back to the surface, where we will record it as a seismic reflection event.  It’s a 3-dimensional event conveyed in seconds with a 3-dimensional graphic animation.

GeoStatistics has become one of the chief drivers for the inversion of seismic data to a display of impedance.  A very popular method of seismic in version is called Stochastic Inversion.  This involves a measure of the "scatter" of impedance as a function of distance from the control point which is a well log at the source.  The diagram shows the measurement of this "scatter" as a function of distance, as measured by the impedance at adjacent wells.  This is a small example of many animation examples that are used in the AVO, Inversion, and Seismic Attribute course.


DONALD MACPHERSON has been involved in all aspects of geophysical data acquisition, processing and interpretation. He had a long career with Mobil Oil company working in Calgary, Dallas, New Orleans and London. Throughout his career, he has participated in teaching courses in the technical aspects of geophysics and has always had a keen interest in bringing clarity and understanding of the tools of the trade to people that become involved in using and interpreting seismic data. He was the manager of the Mobil’s Training Department in Dallas as well as the principle lecturer in the geophysical courses. He received a MSc. in Geophysics and Isotope Geochemistry from the University of Alberta.

AVO, Inversion, and Attributes: Principles and Applications - AVO
Basic Geophysics - BGP