--> Abstract: Ichnofabric Analysis Using Borehole and Core Images - Examples of the Norwegian Sector of the North Sea, by F. Bockelie, A. Eldoy, K. Gran, and F. Porturas; #90928 (1999).

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BOCKELIE, FREDRICK1, ARILD ELDOY2, KJETIL GRAN3, and FRANCISCO PORTURAS4
1Norsk Hydro
2STATOIL
3Saga Petroleum
4Western Atlas

Abstract: Ichnofabric Analysis Using Borehole and Core Images - Examples of the Norwegian Sector of the North Sea

Summary

Ichnofabric analysis can be defined as the study of characteristic patterns preserved in sediments caused by organisms. The trace analysis is currently performed on core data. However, due to the break through of borehole wall imaging either by microconductivity array or acoustic imaging methods. the interpreter has access to high resolution continuous images, which usually extend beyond cored intervals. These are valuable sources of information which can be used to study depositional environments, to characterize the geological strata in exploration activities and during development of producing zones.

This paper presents examples from the Norwegian Sector of the North Sea, where the potential of ichnofabric analysis using borehole images is shown together with a description of the methodology.

The match between interpretation of borehole images and ichnofabric analysis has led to more value added to the use of borehole images (eg attribute analysis) for developing ichnofacies recognition concepts and applications in geosciences. We see important benefits towards more quantitative approaches in analysing depositional environments in the future, but will stress the importance of core calibration.

AAPG Search and Discovery Article #90928©1999 AAPG Annual Convention, San Antonio, Texas