--> Gee Whiz Geophysics…But What About the Log Data?: Normalizing, Editing, and Supplementing Log, Core and Production Data from 1935 to the Present, by Jeff S. Arbogast and Steven M. Goolsby; #90052 (2006)
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Gee Whiz Geophysics…But What About the Log Previous HitDataNext Hit?: Normalizing, Editing, and Supplementing Log, Core and Production Previous HitDataNext Hit from 1935 to the Present

Jeff S. Arbogast1 and Steven M. Goolsby2
1 Petroleum Software Technologies, LLC, Aurora, CO
2 Goolsby Brothers and Associates, Inc, Centennial, CO

Geophysicists have been trying to squeeze as much useable information as possible from Previous HitseismicNext Hit Previous HitdataNext Hit long before the discovery of bright spots. Today they Previous HitdisplayNext Hit this information with 3D visualization software and 3D Previous HitseismicNext Hit is touted as the answer to all things….but what about the log Previous HitdataNext Hit?

Most log Previous HitdataNext Hit (even ancient log Previous HitdataNext Hit) have 10-25 times better vertical resolution than today's Previous HitseismicNext Hit Previous HitdataNext Hit however, many geoscientists treat log Previous HitdataNext Hit much like it was treated in 1935. They obtain copies of the logs, Previous HitdisplayNext Hit them in cross sections, correlate them, and map them. The use of mixed-vintage, incomplete, and/or poor quality log Previous HitdataNext Hit however, can lead to serious problems in interpretation. Without accurate, normalized, high-resolution log Previous HitdataNext Hit for every well in a study area, correlations, Previous HitseismicNext Hit ties and maps may be incorrect. As a result, 3D Previous HitseismicNext Hit interpretations based on these Previous HitdataNext Hit may turn out to be amazingly colorful but inaccurate representations of what is actually happening in the subsurface.

Today the oil and gas industry is challenged with evaluating declining production in aging fields which could involve hundreds of wells with log Previous HitdataNext Hit recorded from 1935 to last week. New plays often involve laminated, poor-quality, low permeability, fractured, or unconventional reservoirs. Using resistivity and SP inversion processing and neural network modeling run on their PC, geologists and geophysicists can generate complete suites of accurate, high-resolution, edited, log, core, and production Previous HitdataTop for every well in a study area. Examples from the Mid-Continent, California and Rocky Mountains will be shown.