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Local dynamic update methods for 3D geological body structure model and voxel model
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Journal Article
Local dynamic update methods for 3D geological body structure model and voxel model
2024
Overview
Due to the complexity of geological structures, the uncertainty of geological phenomena, the massive amount of geological data, and the diversity of geological models, local dynamic updates of 3D geological body models are very difficult. Based on the analysis of the current research status of 3D geological modeling and local dynamic update of 3D geological body model, the local dynamic update methods of geological body models considering geometric, topological, semantic relationships, and geological feature features for different data sources based on the B-Rep (boundary representation) structure model and the CPG (corner-point grid) voxel model are studied in this paper. The local dynamic update methods for the 3D geological bodies based on the B-Rep structure model for new local drilling and profile data are proposed and implemented. There are two local dynamic update methods. The Dynamic update method of B-Rep structure model for local new borehole data is used to update the 3D geological body structure model to comply with the new borehole constraints. The dynamic update method of B-Rep structure model for local new profile data is used to update to the 3D geological body structure model to comply with the new profile constraints. Also the local dynamic update methods for 3D geological bodies based on the CPG voxel model for local new drilling data, new profile data, and new multi-source mixed data are proposed and implemented. There are three local dynamic update methods. The dynamic update method of CPG voxel model for local new borehole data is used to update the 3D geological body CPG voxel model to comply with the new borehole without considering the special topological changes between the strata. The dynamic update method of CPG voxel model for local new profile data is used to update the 3D geological body CPG voxel model to comply with the new profile without considering the fault information. The dynamic update method of CPG voxel model for multi-source mixed data is used to update the 3D geological body CPG voxel model to comply with the new local data through the idea of local voxel replacement with considering the faults information and special topological changes. Finally, dynamic updates for different algorithms and comparative analysis were completed through experiments.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
