The Rock Property Modeling workflow
With the Rock Property Modeling workflow (model > Rock Properties) you can generate a rock property model based on an upscaled continuous well log property, such as porosity or permeability. During property modeling, you populate the grid cells in-between the wells, using a modeling method of your choice.
The workflow takes you through the following steps: creating a model, assigning input data, defining sub-sets of your grid (i.e. Volumes of Interest, VOIs), assigning a modeling method, analyzing your data, fine-tuning the modeling parameters and running the model. You can follow these steps on a per-VOI basis.
Volume of Interest (VOI) A sub-set of your 3D grid. It allows you to populate your 3D grid with rock properties by modeling each VOI separately.
Defining VOIs You define your VOIs based on the selections you make on the Create Model form, under 'Volume definition' and 'Nest within'.
Going through the workflow on a per-VOI basis It is recommended to take each VOI one by one through the workflow. You start with assigning a modeling method to one VOI. Only once you have completed defining the model parameters for one VOI, you should proceed with the next VOI. This lets you to focus on each VOI separately, analyze its data and fine-tune its modeling parameters. At the end of the workflow, you can run your model in parallel for all or only certain VOIs you selected.
Workflow steps Since each modeling method has its own specific set of modeling parameters, the workflow will automatically take you to the next relevant step. Some steps might be skipped depending on the method you selected or the data you have.
Rock property model The container which holds all the associated metadata: upscaled property, volume definition (i.e. VOIs), modeling method and modeling parameters per VOI, etc.
Rock grid property The resultant grid property, which is a combination of all modeled VOIs. Once you have run your model, it will be available in the JewelExplorer (3D Grids > Your 3D Grid > Properties > Rock Properties > Your Rock Grid Property). It is read-only and has the same name as the rock property model.
To know how the rock property models work with multiple realizations, see Modeling and Visualizing multiple realizations.
A pre-requisite for using the Rock Properties Modeling workflow is that you have upscaled your well log data to the resolution of the 3D grid, for which the Upscale Well Log tool is provided in the Tools section of the strip. The output of the tool is a grid property, which you can then select as input to the Rock Properties Modeling workflow. Note that all wells that were included during the upscaling process, will be included in the Facies Modeling workflow (you cannot exclude individual wells once they are part of the upscaled property).
The Rock Properties Modeling workflow consists of the steps listed below.
Creating a rock property model and assigning data
Performing data transformations
Conditioning to secondary data