This plugin, for the open source seismic interpretation platform OpendTect Version 6.4.0 or later, creates a constant Z value 3D horizon which covers the extent of 2D and 3D seismic data in an OpendTect survey/project. With the horizon displayed it is possible to draw fault polygons and grid clipping polygons that extend beyond the 3D survey definition. These can then be used in the Grid 2D-3D Horizon plugin to produce structure maps that extend across both 2D and 3D seismic interpretation in an OpendTect survey/project.
The plugin adds a "Covering 2D-3D Data Extent..." item to the "Processing|Create Horizon Output" menu item which opens a dialog box for:
- Specifying a constant Z value for the output horizon
- Selecting 2D and 3D seismic data that the horizon should cover
- Specifying the name of the generated horizon