Uncertainties on the geometry of faults: a final review

Magali Lecour and Cécile Audinet and Pierre Thore and Jean-Claude Dulac and Richard Cognot. ( 2000 )
in: 20th gOcad Meeting, ASGA

Abstract

Uncertainties concerning oil field reserve estimations are due to a combination of different factors. Some uncertainty factors affect the knowledge of the reservoir geometry and particularly fault geometries [Thore 98]. More and more, oil companies try to study the impact of such uncertainties on the volume estimations [Abrahamsen 99]. Traditionally, only one or three models at the best (worst, median and best cases) are computed according to the input seimic data and the structural geologist knowledge. If the initial model does not correspond to the real structure, all further estimations of the reserves may be slanted and have catastrophic impacts during the field exploitation. In this paper, we propose a new approach to incorporate these uncertainty estimations in the modelling of faults and fault networks. This approach integrates the work done on the new GFault object presented during the previous gOcad meetings [Cognot 96], [Lecour 97], [Lecour 98], [Lecour 99] and the work done in collaboration with Jean-Claude Dulac and Isabelle Duvinage on the Structural Model data structure [Dulac 99], [Duvinage 99].

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    BibTeX Reference

    @inproceedings{LecourRM2000,
     abstract = { Uncertainties concerning oil field reserve estimations are due to a combination of different factors. Some uncertainty factors affect the knowledge of the reservoir geometry and particularly fault geometries [Thore 98]. More and more, oil companies try to study the impact of such uncertainties on the volume estimations [Abrahamsen 99]. Traditionally, only one or three models at the best (worst, median and best cases) are computed according to the input seimic data and the structural geologist knowledge. If the initial model does not correspond to the real structure, all further estimations of the reserves may be slanted and have catastrophic impacts during the field exploitation. In this paper, we propose a new approach to incorporate these uncertainty estimations in the modelling of faults and fault networks. This approach integrates the work done on the new GFault object presented during the previous gOcad meetings [Cognot 96], [Lecour 97], [Lecour 98], [Lecour 99] and the work done in collaboration with Jean-Claude Dulac and Isabelle Duvinage on the Structural Model data structure [Dulac 99], [Duvinage 99]. },
     author = { Lecour, Magali AND Audinet, Cécile AND Thore, Pierre AND Dulac, Jean-Claude AND Cognot, Richard },
     booktitle = { 20th gOcad Meeting },
     month = { "june" },
     publisher = { ASGA },
     title = { Uncertainties on the geometry of faults: a final review },
     year = { 2000 }
    }