Mixed grid size in a single stratigraphic model -- RockWorks

[jacksonn]

Using RockWorks, is there a way (now or in the future) to create a single stratigraphic model with variable cell size? For example, I have a valley surrounding on both sides by "uplands" and I would like to make the valley a finer resolution and the uplands a coarser resolution. The valley is moderately small and so I would imagine that the increased resolution wouldn't have a drastic impact on the processing time, whereas making the entire model area the finer resolution may make the model too computationally intensive to create.

 

Alternately, I could make the finer "valley" model initially, use the boundary cells to create "pseudo" boreholes that will be used as inputs into a coarser model for the entire study area. The caveat is then I would need to find a way to combine the models, which may be a time sink.

[Alison]

Jackson,

 

The RockWorks RwGrd and RwMod files do not allow for variable model spacing.  RockWorks does include an option to create "Subsites" within a project, which are basically just a list of different project dimensions that are stored in the database and can be easily selected.  Unfortunately, when a Stratigraphy model is created, the program stores the RwGrd files based on the stratigraphy units names and there is really no way to store multiple stratigraphy models in the same project.  This is something we'll discuss internally.

 

Your approach of creating a finer valley model and then extracting data for pseudo-boreholes for a larger scale model would work.  There is a tool under the Grids menu for creating Stratigraphy data for pre-defined boreholes based on a list of RwGrd files (which could be the stratigraphy grids from your smaller scale valley model).  Please take a look at the Grids | Grids -> Strat Data tool and let us know if you have any questions about how you would use this.

 

Best Regards,

Alison