In the present workflow step the Spatial_grid containing the facies distribution for the initial forward simulation state (including formations 01 to 07) will be obtained. Such spatial grid should not be confused with the ones output from restoration, which contain the facies distribution for each layer at depositional state / location.
The facies grid will be obtained by reading the restoration results of the corresponding plot file (using Read_plt_file) and performing a spatial grid output.
The main data can be found in Geol_003\Case02\Step06_Obtain_Facies_Grid\Data and comprises:
1.Geol_003_Case02_Step06_gridout.dat with data defined to read the target plot file and output a spatial grid with the facies variable.
2.Geol_003_Case01_Step04_rest_004.plt which corresponds to the plot file output at the end of the restoration stage in which formation08 was translated to the restoration surface. Note that the file Geol_003_Case01_Step04_rest_004.xmf is not required but is provided so that the user can visualize the restoration results in ParaView.
Geol_003_Case02_Step06_gridout.dat
The data in Geol_003_Case02_Step06_gridout.dat file comprises:
1.Read_plt_file to read the target restoration result plot file. 2.Spatial_grid_output to output the facies spatial grid.
Below a detailed description of the data structures is provided.
Read_plt_file
Data File
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* Read_plt_file
File_name "Geol_003_Case01_Step04_rest_004.plt"
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•The name of the plot file being read is specified. •It should be noted that the relative location of any data with the Read_plt_file should be the same as it would be with Control_data (i.e. as Spatial_grid_output would be defined after a Control_data, it must also be defined after the Read_plt_file data). |
Spatial_grid_output
Data File
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* Spatial_grid_output
Name "Fac"
Stage_name_flag 0
Grid_name_flag 1
File_format "ascii"
Mesh_topo_format 0
Element_variables IDM=1
"Facies"
Groups IDM=7
"formation01"
"formation02"
...
"formation07"
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•The Name of the grid to be output is defined as "Fac" •Stage_name_flag set to 0 indicates that the simulation stage name should not be appended to the output .spat file. •Grid_name_flag set to 1 indicates that the name of the grid (in this case "Fac") must be appended to the output .spat file. •The File_format is set to ascii (standard ParaGeo data structures and keywords) so that a .spat file is output. •Mesh_topo_format indicates the type of grid being output. In this case is set to 0 which corresponds to a Spatial_grid with the current mesh topology with data output on a group by group basis (each formation would have its corresponding Spatial_grid_group data). •Element_variables is used to specify that Facies element variable must be output. •Groups keyword is used to define the name of the groups for which the grid is going to be output. In the present case it is compulsory to define it as otherwise the grid is output for all the groups by default and the restoration plot contains the top surface membrane group (which would lead to a fatal error upon attempting the output of the Facies variable from it). |
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Results
The results for the present workflow steps are provided in Geol_003\Case2\Step06_Obtain_Facies_Grid\Results. The main result consists on the Geol_003_Case02_Step06_gridout_Fac.spat file which contains the spatial grid with the facies distribution on a group by group basis, i.e.:
Data File
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* Spatial_grid NUM=1
Name "Fac"
Type "Group"
Groups IDM=7
"formation01"
"formation02"
...
"formation07"
Element_variables IDM=1
"Facies"
* Spatial_grid_group NUM=2
Name "formation01"
Group_assignment "formation01"
Grid_name "Fac"
Element_type "TET4"
Configuration_type "Current"
Element_variables IDM=1
"Facies"
Topology IDM=4 JDM=13101
11146 1046 11160 30778
11185 11244 11178 29914
...
30512 11875 30810 30869
Node_numbers IDM=3288
29 30 ... 30898
Coordinates IDM=3 JDM=3288
50951.6 28000.0 1470.69
56000.0 28000.0 1753.00
...
53983.5 30760.3 1372.76
Element_values IDM=1 JDM=13101
4.00000
4.00000
...
4.00000
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•The output .spat file contains a Spatial_grid of Type "Group" with values for the element variable "Facies" for formations 01 to 07 being defined. Such type of grid requires a Spatial_grid_group data for each of the formations listed in Groups keyword.
•The .spat file contains also the Spatial_grid_group for each of the formations comprising the following data: ▪Name of the spatial grid group (which coincides with the Group_assignment) ▪The "parent" Spatial_grid name (in this case "Fac") ▪The Element_type defining the topology of the grid ▪Configuration_type set to "Current" indicating that the grid contains the data in the configuration at the output time ▪The Element_variables with values defined in the present grid ▪The Topology of the grid with the node numbers for each element/cell in a separate row (which corresponds to the mesh of the restoration at the output time) ▪The Node_numbers defining the topology of the grid ▪The Coordinates for each of the nodes defining the grid topology ▪The Element_values defining the values for the Facies property at each grid element/cell. |
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