--> Abstract: Multi-Well Petrophysical Processing Using Symbiolog: An Example Using Both Old and New Well Logs from the Monterey Formation; San Joaquin Valley, by D. M. Olson and W. R. Berry II; #90945 (1997).
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Abstract: Multi-Well Previous HitPetrophysicalNext Hit Processing Using Symbiolog: An Example Using Both Old and New Well Logs from the Monterey Formation; San Joaquin Valley

OLSON, DEBORAH M. AND WILLIAM R. BERRY II

As part of a DOE-funded demonstration reservoir characterization project, a Previous HitpetrophysicalNext Hit Previous HitfieldNext Hit study project was undertaken in the Monterey Formation in the vicinity of the Pioneer and Los Lobos Fields, T11N/R23W, Kern County, California. The dataset consisted of about 45 Previous HitwellsNext Hit including old E-logs (1930s through 1950s), IES logs (1960s), and modern logging suites (1980s to present). A conventional Previous HitanalysisNext Hit was performed on the 12 modern Previous HitwellsNext Hit to derive values for lithology and porosity, and the results were used to calibrate an empirical model to obtain the same parameters from the old E-log Previous HitwellsNext Hit. The Previous HitanalysisNext Hit on the Previous HitwellsNext Hit with porosity logs was calibrated to core data using a geologically-based analytical approach to parameter selection, and a close match was obtained. The extension of the model to the E-log only Previous HitwellsNext Hit required careful interpretation by a geologist/petrophysicist, but with close attention to parameter selection quite meaningful results were obtained on the old Previous HitwellsNext Hit through the Monterey interval. The work required a complex processing sequence involving several custom programs to calculate input curves for the main Previous HitpetrophysicalNext Hit model, which was made possible using the tools available in Symbiolog. Symbiolog is an advanced log Previous HitanalysisNext Hit program that functions as an add-on to many other Previous HitpetrophysicalNext Hit systems, providing enhanced processing features, a user programming module, and multi-well capability even to systems that are single-well oriented. For this project, Symbiolog was used in conjunction with the Petrolog log Previous HitanalysisNext Hit system from Crocker Data Processing, which was used for all log input/output, graphics, database, and log curve manipulation. The results of this project has significance for many fields in California, since it shows that Previous HitpetrophysicalNext Hit Previous HitanalysisNext Hit of both new and old Previous HitwellsNext Hit can be done efficiently and with a high degree of accuracy. This will greatly enhance the accuracy and efficiency of reservoir characterization and reservoir modeling work in the typical Previous HitfieldNext Hit that has many Previous HitwellsTop with old or limited log suites.

Search and Discovery Article #90945©1997 AAPG Pacific Section Meeting, Bakersfield, California