Objectif The StruMod project aims at showing how the combined use of two existing 3D structural modelling tools (DIANA, a geomechanical solver, and GOCAD capable of volumetric reconstruction) can enhance the understanding of the structural geology needed in hydrocarbon exploration. The integration (i.e. exchange of the 3D structural models) will be realized in Geomod, the commercial data translation environment.L%The synthetic modelling procedure of unfolding by GOCAD and DIANA is ready and has been tested on synthetic models. The geomechanical quantities displacement and strain can be extracted from GOCAD and from DIANA. In addition, DIANA gives also the stress field. The scale-dependent behaviour of the geomechanical properties required to calculate the stresses has been made available and much emphasis has been laid on the different types of material rheology that should be considered. The thus-developed tools have been applied in two case studies, the Elf Aquitaine case and the Geologic case.Geologists and geophysicists need accurate 3D earth model data to take decisions in exploration and production for hydrocarbons and to assess environmental effects. Generally these models reflect the current static situation in the earth. But they should also account for data on dynamic geological and geophysical processes in the earth's subsurface, both on geological and production time scales. Such dynamic processes include e.g. compaction, deformation, fracturing and faulting, thereby changing the geometry, properties and, occasionally, the topology of the earth model. Knowledge on the dynamic behaviour of the earth on a geological time scale is essential for assessing prospects in exploration, whereas on a production time scale it supports risk analysis of production optimisation and safety.The StruMod project uses 3D structural modelling combined with geomechanical analysis to increase the understanding of the structural geology needed in hydrocarbon exploration.Existing software (mainly 2D, only a few 3D) in the field of geological reconstruction applies unfolding of interfaces using volumetric constraints, an innovative technique. Geomechanical modelling techniques have hardly been applied to structural modelling. This approach will allow for estimation of stress/strain fields, which is not possible with the geometrical reconstruction techniques. The expected results of the project are :- integration of the softwares packages,- new application area (market) for the softwares packages,- three successful cases of structural geological modelling,- user awareness of this innovative approachThree case studies (one synthetic and two real cases) using these tools will demonstrate the value of the dynamic model and its related stress/strain fields resulting from this innovative and more realistic approach. Programme(s) ENG-THERMIE 1 - Programme (EEC) for the promotion of energy technology in Europe (THERMIE), 1990-1994 Thème(s) 5.4 - GEOPHYSICS AND PROSPECTING Appel à propositions Data not available Régime de financement DEM - Demonstration contracts Coordinateur TNO Institute of Applied Geoscience Contribution de l’UE Aucune donnée Adresse Schoemakerstraat 97 2600 JA Delft Pays-Bas Voir sur la carte Coût total Aucune donnée
