3D Grids - contains 3D grids

Right mouse button on the icon allows to:

• Create new grid
• Import from ECLIPSE
• Import GOCAD SGrid
• Import GOCAD TSolid
• Import GOCAD Voxet
• Import from RESQML EPC
• Export all to RESQML EPC
• Clear
• Slicer (Show slicer, Edit slicer parameters, Recalculate slicer parameters)
• Add folder

Grid types

When you choose Create new grid, g-Space first asks for a Grid type:

• S-Grid — a structured, corner-point grid of hexahedral cells built from the standard grid parameters (interpolation and grid steps, angle, length, zones and layers). This is the default grid used across most workflows; see 3D grid creating.
• Tetrahedral — an unstructured tetrahedral mesh generated from an existing structural model, so it honours the model's structural and stratigraphic framework. You select the source structural model, a Layering type (Proportional, Parallel to Top or Parallel to Bottom), the number of Layers per zone and the Layer thickness. Tetrahedral grids are suited to complex volumes that structured grids cannot represent.

Grids can also be brought in from external formats. Import from ECLIPSE and Import GOCAD SGrid load structured grids, while Import GOCAD TSolid and Import from RESQML EPC load tetrahedral grids.

Extract Grid Property to LAS

This is the reverse of upscaling well logs into a grid. Right-click a single grid property (Data Manager > 3D Grids > grid > Properties > property) and choose Extract Grid Property to LAS to sample that property along well trajectories and store the result as a new LAS curve. It lets you compare the original log, the upscaled log and the modelled grid property along the same wells.

The Extract Grid Property to LAS wizard shows:

• Source grid and Source property — read-only, taken from the right-clicked property.
• Wells selection — All wells or Specific wells picked from the list.
• Output suffix — appended to the property name to form the curve name; it defaults to _from_<Grid>. For property Porosity on Grid1 the resulting curve is Porosity_from_Grid1.

The extraction follows the grid geometry and cell values, so no separate sampling step is required. A LAS curve is created for each processed well and stored under that well, ready to display in the Well log and Well correlation views. Wells that do not intersect the grid are skipped, and if a curve with the target name already exists you are asked whether to overwrite it. Extraction is available for S-grids only; tetrahedral grids are not supported.