GMS:Horizons Wizard: Difference between revisions

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==Step 1==
==Step 1==
The first step is to define the inputs to be used, which can include [[GMS:Boreholes|boreholes]], [[GMS:TIN Module|TINs]], and a [[GMS:Horizon Conceptual Model|Horizon Conceptual model]].
The first step is to define the inputs to be used, which can include [[GMS:Boreholes|boreholes]], [[GMS:TIN Module|TINs]], and a [[GMS:Horizon Conceptual Model|Horizon Conceptual model]].
*''Boreholes'' – This section contains options for using boreholes.
**''Use boreholes'' – Specifies to use borehole data in creating the solid or mesh.
**''Use borehole cross sections'' – Specifies to use borehole cross sectional data in creating the solid or mesh.
**''Representing missing horizons implicitly'' – If cross sections are not available, this option can be used.
**''Use all boreholes'' – All boreholes in the project will be using in creating the solid or mesh.
**''Select borehole folder'' – Allows selecting a borehole folder from a list below this option. Only borehole data in the folder will be used.
*''TINs'' – This section has options for using TINs.
**''Use horizon TINs'' – Indicates to use available TIN data in creating the solid or mesh.
**Use all TINs – All TINs in the project will be using in creating the solid or mesh.
**''Select TIN folder'' – Allows selecting a TIN folder from a list below this option. Only TIN data in the folder will be used.
*''Raster Catalog'' – The dropdown allows selecting a [[GMS:Raster Catalog|raster catalog]] in the project.
*''Conceptual model'' – This section has options for using horizon conceptual models.  The desired conceptual modal can be selected from the list below this option.
<!--Beginning with GMS 9.0, a [[GMS:Raster Catalog|raster catalog]] can be included as input.-->


Beginning with GMS 9.0, a [[GMS:Raster Catalog|raster catalog]] can be included as input.
:[[File:HorizonsWizard1.png|thumb|none|500 px|The ''Horizon Elevation'' step of the ''Horizons'' wizard]]
 
[[File:HorizonsWizard1.png|thumb|none|500 px|The ''Horizon Elevation'' step of the ''Horizons'' wizard]]
 
===Including Borehole Cross Sections===
If the Horizon process using horizons on borehole contacts does not produce the desired results, the borehole data can be supplemented with [[GMS:Borehole Cross Sections|user-defined cross sections]] using the [[GMS:Borehole Cross Sections|''Cross Section Editor'']].
 
For example, when the '''Horizons &rarr; Solids''' command is executed, the user can choose to include cross section data.  If this option is selected, the material boundaries (arcs) on the cross sections inherit the horizon ID assigned to the adjacent borehole contact and the points along the material boundary are added to the contacts when interpolating the horizon surfaces.  The resulting solids match the user-defined cross sections as closely as possible.  In other words, by creating a few simple cross section, the user has complete control over the shape of the solids created by the horizons technique.
 
The match between the resulting solid and the user defined cross section is a function of two things: first, the density of the points on the user defined cross section, and second the triangle density of the primary TIN.  As mentioned, the arcs on the cross sections inherit the horizon ID from the borehole contact as shown below.
 
[[Image:xsect_hor.jpg|none|frame|Example of how cross section data inherits horizon id from boreholes]]
 
In this case the marked points on the cross section inherit horizon ID 3.  If wanting more control over the interpolation of horizon 3, then add more points to the arc. This can be done by selecting the '''Select Arc''' tool's right-click '''Redistribute Virtices''' command in the ''Cross Section Editor''.  The triangle density of the primary TIN also controls how well the resulting solid matches the user-defined cross section.  Since the points on the cross section are interpolated to the primary TIN, if the TIN does not have a significant number of triangles in the vicinity of the cross section then there is no way the TIN surface can match the cross section.


==Step 2==
==Step 2==
The second step is to define the top and bottom of the solid, mesh, or HUF layers. When creating HUF data, the grid elevations can be edited.
The second step is to define the top and bottom of the solid, mesh, or HUF layers. When creating HUF data, the grid elevations can be edited.
[[File:HorizonsWizard2.png|thumb|none|500 px|The ''Top and Bottom Elevations'' step of the ''Horizons'' wizard]]
*''Primary TIN'' &ndash; When there are multiple TINs in the project, a TIN should be selected as the primary TIN in order to resolve potential conflicts between TIN data.
*''Top Elevation'' &ndash; This section designate what data to use for the top elevation in the solid or mesh.
**''Top of boreholes'' &ndash; Designates to use the top elevations in the borehole data.
**''Constant elevation'' &ndash; Use a constant elevation value for the top elevation.
**''Tin elevations'' &ndash; Allows selecting a TIN from the list below this option. The selected TIN will be used for the top elevation.
*''Bottom elevation''  This section designate what data to use for the bottom elevation in the solid or mesh.
**''Bottom of boreholes'' &ndash; Designates to use the bottom elevations in the borehole data.
**''Constant elevation'' &ndash; Use a constant elevation value for the bottom elevation.
**''TIN elevations'' &ndash; Allows selecting a TIN from the list below this option. The selected TIN will be used for the bottom elevation.
:[[File:HorizonsWizard2.png|thumb|none|500 px|The ''Top and Bottom Elevations'' step of the ''Horizons'' wizard]]


==Step 3==
==Step 3==
[[File:HorizonsWizard3.png|thumb|500 px|The ''Build Mesh'' step of the ''Horizons'' wizard]]
The third step is to define the [[GMS:Interpolation|interpolation]] method to be used, as well as options specific to creating solids, a mesh, or HUF package.
The third step is to define the [[GMS:Interpolation|interpolation]] method to be used, as well as options specific to creating solids, a mesh, or HUF package.


Beginning with GMS 7.0, when creating solids, the user can choose the option ''Preserve projection TIN datasets''. This option will create a new TIN that will have a dataset for each horizon. This is often useful so that the user can see the result of the interpolation process for each Horizon. The user can then edit the TIN by hand and include the TIN when executing the '''Horizons&rarr;Solids''' command.
*''Interpolation method'' &ndash; Select the interpolation method to use in creating the solid or mesh.
**''Inverse distance weighted'' &ndash; Use the [[GMS:Inverse Distance Weighted|inverse distance weighed]] interpolation method.
**''Natural neighbor'' &ndash; &ndash; Use the [[GMS:Natural Neighbor|natural neighbor]] interpolation method.
**''Preserve projection TIN datasets'' &ndash; <!--Beginning with GMS 7.0, when creating solids, the user can choose the option ''Preserve projection TIN datasets''.--> This option will create a new TIN that will have a dataset for each horizon. This is often useful in order to see the result of the interpolation process for each Horizon. The user can then edit the TIN by hand and include the TIN when executing the '''Horizons&rarr;Solids''' command.
*''Nodal function'' &ndash; Select the nodal function option to use with the interpolation method.
**''Constant'' &ndash; Apply a [[GMS:Shepard's Method|constant nodal function]] (Shepard's Method).
**''Gradient plane'' &ndash; Apply a [[GMS:Gradient Plane Nodal Functions|gradient plane nodal function]].
**''Quadratic'' &ndash; Apply a [[GMS:Quadratic Nodal Functions|quadratic nodal function]].
*''Solids'' &ndash; Options for the generated solids.
**''Intersect horizon surfaces'' &ndash; Allows the solids to intersect with horizon surfaces.
**''Minimum solid thickness'' &ndash; Set a minimum thickness value for generated solids.
**''Put solids in new folder'' &ndash; Places the generated solids in a new folder in the Project Explorer.
***''New folder name'' &ndash; Enter a name for the new folder where the generated solids will be placed in the Project Explorer.
:[[File:HorizonsWizard3b.png|thumb|none|500 px|The ''Build Solids'' step of the ''Horizons'' wizard]]


When creating a 3D mesh for a FEFLOW simulation, make sure to turn on the ''Prevent pinchouts (FEFLOW mesh)'' option. This will ensure that the mesh will contain all prism elements and that every mesh layer is continuous throughout the mesh.
When creating a 3D mesh for a FEFLOW simulation, make sure to turn on the ''Prevent pinchouts (FEFLOW mesh)'' option. This will ensure that the mesh will contain all prism elements and that every mesh layer is continuous throughout the mesh.


:[[File:HorizonsWizard3.png|thumb|none|500 px|The ''Build Mesh'' step of the ''Horizons'' wizard]]


{{Navbox GMS}}
{{Navbox GMS}}

Latest revision as of 22:40, 6 April 2022

Horizons
HorCoverage.png
Links
Horizons
Horizons to Solids
Horizons to 3D Mesh
Horizons to UGrid
Horizons to HUF
Horizons Wizard
Including Borehole Cross Sections
Raster Catalog
Horizons Conceptual Model
Horizons Applications
v • e

The Horizons Wizard is used to create solids, a 3D mesh, or HUF layers from horizon data. The wizard is started via the Horizons → Solids, Horizons → 3D Mesh, Horizons → UGrid, and Horizons → HUF commands. These commands are in the TIN and Boreholes menus.

Step 1

The first step is to define the inputs to be used, which can include boreholes, TINs, and a Horizon Conceptual model.

  • Boreholes – This section contains options for using boreholes.
    • Use boreholes – Specifies to use borehole data in creating the solid or mesh.
    • Use borehole cross sections – Specifies to use borehole cross sectional data in creating the solid or mesh.
    • Representing missing horizons implicitly – If cross sections are not available, this option can be used.
    • Use all boreholes – All boreholes in the project will be using in creating the solid or mesh.
    • Select borehole folder – Allows selecting a borehole folder from a list below this option. Only borehole data in the folder will be used.
  • TINs – This section has options for using TINs.
    • Use horizon TINs – Indicates to use available TIN data in creating the solid or mesh.
    • Use all TINs – All TINs in the project will be using in creating the solid or mesh.
    • Select TIN folder – Allows selecting a TIN folder from a list below this option. Only TIN data in the folder will be used.
  • Raster Catalog – The dropdown allows selecting a raster catalog in the project.
  • Conceptual model – This section has options for using horizon conceptual models. The desired conceptual modal can be selected from the list below this option.
The Horizon Elevation step of the Horizons wizard

Step 2

The second step is to define the top and bottom of the solid, mesh, or HUF layers. When creating HUF data, the grid elevations can be edited.

  • Primary TIN – When there are multiple TINs in the project, a TIN should be selected as the primary TIN in order to resolve potential conflicts between TIN data.
  • Top Elevation – This section designate what data to use for the top elevation in the solid or mesh.
    • Top of boreholes – Designates to use the top elevations in the borehole data.
    • Constant elevation – Use a constant elevation value for the top elevation.
    • Tin elevations – Allows selecting a TIN from the list below this option. The selected TIN will be used for the top elevation.
  • Bottom elevation This section designate what data to use for the bottom elevation in the solid or mesh.
    • Bottom of boreholes – Designates to use the bottom elevations in the borehole data.
    • Constant elevation – Use a constant elevation value for the bottom elevation.
    • TIN elevations – Allows selecting a TIN from the list below this option. The selected TIN will be used for the bottom elevation.
The Top and Bottom Elevations step of the Horizons wizard

Step 3

The third step is to define the interpolation method to be used, as well as options specific to creating solids, a mesh, or HUF package.

  • Interpolation method – Select the interpolation method to use in creating the solid or mesh.
    • Inverse distance weighted – Use the inverse distance weighed interpolation method.
    • Natural neighbor – – Use the natural neighbor interpolation method.
    • Preserve projection TIN datasets – This option will create a new TIN that will have a dataset for each horizon. This is often useful in order to see the result of the interpolation process for each Horizon. The user can then edit the TIN by hand and include the TIN when executing the Horizons→Solids command.
  • Nodal function – Select the nodal function option to use with the interpolation method.
  • Solids – Options for the generated solids.
    • Intersect horizon surfaces – Allows the solids to intersect with horizon surfaces.
    • Minimum solid thickness – Set a minimum thickness value for generated solids.
    • Put solids in new folder – Places the generated solids in a new folder in the Project Explorer.
      • New folder name – Enter a name for the new folder where the generated solids will be placed in the Project Explorer.
The Build Solids step of the Horizons wizard

When creating a 3D mesh for a FEFLOW simulation, make sure to turn on the Prevent pinchouts (FEFLOW mesh) option. This will ensure that the mesh will contain all prism elements and that every mesh layer is continuous throughout the mesh.

The Build Mesh step of the Horizons wizard
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