The structural model for the SEAM LoFS model includes two reservoirs, a salt body, a sea floor, horizons and faults. The horizons and faults are supplied as triangulated meshes. The remaining surfaces for encapsulating the reservoirs and salt need to be extracted from 3D voxel data in SEG-Y format. To that end, the creation of structural model required the extraction of closed, FEM-quality triangular meshes for:
This section details the process for extracting the surfaces. The surfaces are based on the following datasets provided by SEAM:
- Upper Reservoir (SFR): Vcl_FBW30mp15cor2Salt_SCA_SFR_Upper__res_linear_salt_1_outside_1.sgy
- Lower Reservoir (SCA): DW_SCA_4Petrel.sgy
- Salt: Salt_mask_2_0_cleaned.sgy
- Sea Floor: Regions_hires.sgy
The FEM model is generated from a water-tight structural model of the field. It comprises of several turbidite reservoirs, a salt volume and faults. We used our proprietary tool Web SEG-Y in order to process voxelized seismic interpretations (lithology markers, shale volumes, salt makers) in order to extract closed triangular surface meshes optimized for FEM computations. The important faults were also resolved as geobodies with a small thickness.
