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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 76 (1992)

Issue: 5. (May)

First Page: 621

Last Page: 637

Title: Cross Sections from Dipmeter Data (1)

Author(s): ARNAUD ETCHECOPAR (2) and JEAN-LUC BONNETAIN (3)

Abstract:

This paper describes two computer methods for constructing cross sections from dipmeter data. These methods provide fast and accurate descriptions of the different structures in the vicinity of the well whatever their scales. Thus, it becomes possible to examine both structure at the seismic scale and microstructures such as slumps or microfaults. The methods described are based on two fundamental behaviors of stratified rocks during deformation: similar folding and parallel folding. The similar-fold method is robust and can be used whatever the structure because, in a first approximation, folds, drags, and rollovers can be described as similar folds or parts of similar folds. On the other hand, the parallel-fold method, which is usable only for fold description, is somet mes unstable, although it provides more accurate results. After a description and a comparison of the two methods, examples from different structural environments are examined. It is shown that it is possible to obtain maps and three-dimensional descriptions that can be used as models for synthetic seismic or to evaluate volumes.

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