To export 2D Horizon data, select Survey - Export - Horizon - GeoFrame - 2D. The top part of the user interface corresponds to the OpendTect access, where it is needed to select the Input Line Set and Attribute and the Input Horizons that you wish to export (For multiple selection of horizons hold the Ctrl key while selecting). See Line Set and Attribute selection dialog for details of selecting the Input Line Set and Attribute.

The bottom part of the user interface corresponds to the GeoFrame access, where it is needed to specify the GeoFrame Project, Password, Survey name, Interpretation Model, to select the Output Line Class, and to specify the Output Horizon Name for the case of a single horizon export or the Output Horizons Prefix for the case of multiple horizons export.

In order to obtain the geometry information for each 2D Line of the selected Input Horizons, the list of 2D Lines that will be exported for the selected Input Horizons is determined by the intersection between the lists of 2D Lines of the selected Input Line Set and Attribute, of the selected Input Horizons, and of the selected Output Line Class.