WORKFLOW FOR STRUCTURAL MODEL CONSTRUCTION

Jean-Claude Dulac and Isabelle Duvinage and Magali Lecour. ( 1999 )
in: 19th gOcad Meeting, ASGA

Abstract

ion (see [4] and [6]). In this representation, the 3D space is subdivided into volumic regions by triangulated surfaces. These surfaces may represent faults, horizons or the boundary of the zone of interest. Not only surfaces have to be modelled, but also the contacts between the surfaces should meet sorne requirements: these contacts have to be perfectly tight in order to avoid leaks between the regions. This is often performed by computing the intersection between the surfaces. However, the operations involved are known to cause numerical instabilities. The proposed method avoids any intersection computation. The key point is to define the contacts between horizons, faults and boundaries and then to create surfaces that insert these contacts in their triangulation. When creating a structural model, different kind of data may be available. The data may represent fauIts and/or horizons; they may be represented by points, polygonal lines or triangulated surfaces. For managing these various representations, a new object has been defined: the StructuralModel. This object gathers data representing faults and/ or horizons with their different types. It also stores and manages contacts between faults, horizons and boundaries. Thanks to this structure, different workftows can be proposed depending on the available data. Different workftows are presented in other papers (see [1], [2] and [5]), but each of them follows the same general workftow. After a brief review of the data that may be encountered, the general workftow is described. Sorne important steps are detailed in next sections.

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    BibTeX Reference

    @inproceedings{DulacRM1999,
 abstract = { ion (see [4] and [6]). In this representation, the 3D space is subdivided into volumic regions by triangulated surfaces. These surfaces may represent faults, horizons or the boundary of the zone of interest. Not only surfaces have to be modelled, but also the contacts between the surfaces should meet sorne requirements: these contacts have to be perfectly tight in order to avoid leaks between the regions. This is often performed by computing the intersection between the surfaces. However, the operations involved are known to cause numerical instabilities. The proposed method avoids any intersection computation. The key point is to define the contacts between horizons, faults and boundaries and then to create surfaces that insert these contacts in their triangulation. When creating a structural model, different kind of data may be available. The data may represent fauIts and/or horizons; they may be represented by points, polygonal lines or triangulated surfaces. For managing these various representations, a new object has been defined: the StructuralModel. This object gathers data representing faults and/ or horizons with their different types. It also stores and manages contacts between faults, horizons and boundaries. Thanks to this structure, different workftows can be proposed depending on the available data. Different workftows are presented in other papers (see [1], [2] and [5]), but each of them follows the same general workftow. After a brief review of the data that may be encountered, the general workftow is described. Sorne important steps are detailed in next sections. },
 author = { Dulac, Jean-Claude AND Duvinage, Isabelle AND Lecour, Magali },
 booktitle = { 19th gOcad Meeting },
 month = { "june" },
 publisher = { ASGA },
 title = { WORKFLOW FOR STRUCTURAL MODEL CONSTRUCTION },
 year = { 1999 }
}