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SWLGS Luncheon Topics

Updated April 3, 2007

April 3, 2007

Pre-stack inversion - take a good, close look at your rocks from miles away.

By    Gary Perry, VP Dallas Reservoir Services, Geotrace

 


Abstract Summary

Data you already own could provide you with more information than you ever imagined.  Using pre-stack migrated CMP gathers and the proper well log suites on just a few wells, rock properties can be closely estimated for each location in the 3D volume.  Both P- and S-wave velocity and density and, from those basic properties, bulk modulus, Poisson’s ratio, Lame’s modulus and Young’s modulus are inverted from the pre-stack data.  When one knows (within reason) all these things the lithology and fluid can both also be closely estimated.  So before a new well is drilled potential locations can be rated by reservoir rock quality, thickness and saturation.  These days when it is especially important to get the most product into the pipeline as fast as possible it is essential to be able to know the best places to drill.  A case history in Breton Sound will be shown.

Biographical Sketch

 

Gary Perry has been in the industry since 1974 and studied Geology with emphasis on Geophysics at the University of Texas during his early career.  He is currently Vice President of Reservoir Services, Dallas for Geotrace and has been with the company for over 20 years.  Gary was previously with Geo-Search Corporation from 1974 to 1986 where he performed basinal velocity studies in several onshore U.S. basins before going into seismic processing.

 


 

 

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