Distance Maps and Virtual Fault Blocks in Tetrahedral Models.

in: 26th Gocad Meeting., ASGA

Abstract

As fault surfaces are created from interpretation of seismic and well data, surfaces do not always reach model boundaries. Some faults die inside a fault block, without contact with other surfaces. In these cases, it is difficult to precisely determine fault blocks boundaries. An algorithm was developed to extend fault surfaces one by one through the whole tetrahedral model. In order to extend a fault, a signed distance function is computed from the available fault surface over the whole volume . The iso-value zero of the distance function represents the extended fault. Each extended fault partitions the model in two fault blocks. The position of any point in a tetrahedral model with respect to each fault in the network is compiled from the signed distance map to each fault. Fault blocks are created virtually by all points sharing the same fault position description.

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    BibTeX Reference

    @INPROCEEDINGS{,
        author = { Tertois, Anne-Laure and Mallet, Jean-Laurent },
         title = { Distance Maps and Virtual Fault Blocks in Tetrahedral Models. },
     booktitle = { 26th Gocad Meeting. },
          year = { 2006 },
     publisher = { ASGA },
      abstract = { As fault surfaces are created from interpretation of seismic and well data, surfaces do not always reach model boundaries. Some faults die inside a fault block, without contact with other surfaces. In these cases, it is difficult to precisely determine fault blocks boundaries.
    An algorithm was developed to extend fault surfaces one by one through the whole tetrahedral model. In order to extend a fault, a signed distance function is computed from the available fault surface over the whole volume . The iso-value zero of the distance function represents the extended fault. Each extended fault partitions the model in two fault blocks.
    The position of any point in a tetrahedral model with respect to each fault in the network is compiled from the signed distance map to each fault. Fault blocks are created virtually by all points sharing the same fault position description. }
    }