Abstract: A system and method for modeling a subsurface structure. Data representing a configuration of faults, horizons, and/or unconformities may be transformed to a depositional model comprising cells representing an estimated configuration of subsurface structure at a depositional time period when the subsurface structure was formed. Groups of cells in the depositional model may be divided into sub-meshes using iso-surfaces, where one set of iso-surfaces may represent the horizons at the depositional time period. The sub-meshes may be divided into one or more parts using the transformed geological data representing an estimated depositional configuration of the faults. For each group of cells in each sub-mesh part, the group of cells in the sub-mesh part may be represented by a single polyhedron. The polyhedrons may be transformed to generate a current model to represent the current configuration of the faults and horizons using transformed polyhedrons.

Abstract: A device, system and method for a structure and stratigraphy preserving transformation of a geological model. A fault may be sealed in a fault zone surrounding the fault in a geological model by unifying topological elements on opposite sides of the fault. The fault zone may be emptied of cells and the fault zone surrounding the sealed fault may be remeshed with new cells interior to the boundary. The fault may then be unsealed by partitioning the mesh along the fault into one or more fault blocks and duplicating the topological elements on opposite sides of the fault. Cells adjacent to the unsealed fault may be remeshed so as to remove sliver cells. The geological model may be updated by remapping the fault blocks into the geological model. The updated geological model may be stored.

Abstract: A system and method for modeling a subsurface structure. Data representing a configuration of faults, horizons, and/or unconformities may be transformed to a depositional model comprising cells representing an estimated configuration of subsurface structure at a depositional time period when the subsurface structure was formed. Groups of cells in the depositional model may be divided into sub-meshes using iso-surfaces, where one set of iso-surfaces may represent the horizons at the depositional time period. The sub-meshes may be divided into one or more parts using the transformed geological data representing an estimated depositional configuration of the faults. For each group of cells in each sub-mesh part, the group of cells in the sub-mesh part may be represented by a single polyhedron. The polyhedrons may be transformed to generate a current model to represent the current configuration of the faults and horizons using transformed polyhedrons.