In g-Space, Properties modeling involves the integration and calculation of well log data and other geological properties to populate 3D grids with meaningful information, such as porosity, permeability, and fluid saturation.
To start, navigate to the Data Manager, Select the desired grid (e.g., "Grid 1") by clicking on it. This action highlights the grid and makes it the active selection.
Right-click on the selected grid to open the context menu. This menu contains various options related to the selected grid, allowing for efficient data management.
Set LAS option allows you to assign a LAS file to the grid, integrating well log data for analysis and visualization. The Grid Calculation Parameters window will appear, prompting you to select the appropriate LAS file from your data.
1. LAS Curve Selection: The user can select the type of curve from the dropdown, e.g., DT (Sonic), GR (Gamma Ray), etc.
2. Value Extraction: dropdown offers multiple statistical methods to extract well log data into the grid:
•Average: Computes the arithmetic average of the selected well log data over the specified interval.
•RMS: Extracts the Root Mean Square value, providing a weighted average of the data, emphasizing higher values.
•Minimum: Selects the minimum value of the LAS curve in the given interval.
•Maximum: Extracts the highest value of the LAS curve in the interval.
•Dominant: Identifies the most frequent or significant value within the LAS data.
•Median: Extracts the median, giving the middle value of the LAS curve data, minimizing the impact of extreme values.
3. Well Type: allows users to specify whether the well is Vertical or Horizontal.
Save Current LAS to Properties
Once the LAS data is assigned and processed, this option allows the user to save the well log data (LAS) as a property within the grid. This property can then be used for subsequent geological and reservoir calculations, modeling, and further analysis.
Name the property, then select the Modeling type — either Petrophysical or Facies Modeling.
g-Space supports two types of Modeling properties:
Petrophysical: These are scalar properties like porosity, permeability, and saturation that vary smoothly across the reservoir. Choose this type for continuous curves.
Facies: These include categorical data such as lithology, facies codes, or rock types, typically constrained by facies boundaries. Choose this type for discrete curves.
Afterward, choose the Propagation type and set the Propagation distance.
Upon creating grid zones and properties, the Zones and Properties folders will be added under the grid's main folder in the Data Manager. You can access a context menu for managing these objects by right-clicking on them.
You can visualize the grid in 3D depth view as a complete cellular model, display grid cells along wells, and also view the grid in the section view for detailed analysis.
Visualization settings are available in the View Properties
