BSTRAT
Use this to create a stratigraphic block model from a set of stratigraphic grid models created through the Grid Calc menu. A stratigraphic block model is similar to an ordinary block model, however, there is no sub-blocking scheme in the Z direction and block tops and bottoms can be located at any Z value. Z block sizes can vary to reflect the true thickness of stratigraphic horizons.
Before you attempt to create a stratigraphic block model we recommend that you check the following:
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All grids must have the same project code.
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Each horizon listed in the
.gdc_globfile must have an associated srg and sfg. This executable looks at the srg and sfg of each horizon for the block modelling and uses any other grids as variables in the block model, for example fcg becomes the fc variable in the block model. -
All grids must cover the same grid area as the grid block size and grid extents are used to create the block model.
Note: Block models constructed through this option do not have an associated Block definition file (.bdf). As a result these block models cannot be used with options that require a .bdf file.
Usage:
| bstrat <project> <globfile> [-s <seam1 name> <seam1 z> -s <seam2 name> <seam2 z>...] <block model> <> indicates a mandatory switch. [ ] indicates an optional switch |
Where:
| Option | Description |
|---|---|
| <project> | Enter the project code. The project code is specified through the Project Specification file (.dg1). |
| <globfile> | Enter the name of the Glob file (.gdc_glob) that will be used to create the stratigraphic block model. You will need to include the.gdc_glob file extension, for example thor.gdc_glob. |
| [-s] | This optional switch allows for subblocking in the resulting stratigraphic block model. Simply enter the name of the horizons that will be used to contruct the blocks and enter a maximum Z value for each. If a Z value is set to '0', then the block's Z length is unrestricted and a single block will be created. If a positive value is entered, then the blocks will be created up to this height, potentially creating a number of short blocks. |
| <block model> | Enter the name of the resulting stratigraphic block model. The block file name, including the .bmf file extension, can contain up to 256 alphanumeric characters (spaces are not allowed). You do not need to include the.bmf file extension. |
Example:
bstrat THOR thor.gdc_glob mymodel
