| OpendTect Workflows Documentation version 4.2 |
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Purpose: Set up the structure for a new OpendTect project.
Theory: OpendTect stores data in flat files organized in directories and managed by OpendTect's file management system. The root directory for projects must be created by OpendTect. Usually a root directory is created at installation time. Alternatively, a new root directory can be created when you define the new project. For each project OpendTect requires the survey boundaries and the transformation between inline, crossline numbers and X,Y rectangular co-ordinates to be specified. OpendTect projects can be set up for only 3D seismic, only 2D seismic and for 2D+3D seismic. OpendTect does not require 2D lines to lie inside the survey definition boundaries.
Software: OpendTect
Workflow:
- Press the Survey Selection icon and press New to create a new project.
- Specify the survey directory name and the type of project (2D, 3D, or both 2D and 3D). Now specify the boundaries and inline, crossline to X,Y transformation. This can be done in different ways: 1) scan a 3D seismic data set, 2) specify 3 corner points (2 on the same inline) or 3) specify the transformation.
- Select the new Survey and leave the Survey selection window (press OK).
- Import Seismic data (Survey - Import - Seismic - SEG-Y - 3D).
- To view the imported seismic data: right-click on inline in the tree, right-click on the new element in the tree, and Select Attribute - Stored Cubes - your seismic file.
Tips:
- If you have a license for Workstation Access you can get the survey settings for a new OpendTect project directly from a seismic volume in a Seisworks/OpenWorks or Geoframe-IESX project. After setting up the project you then import seismic (horizons, wells) from these data stores with Workstation Access.
For more info, see this Tutorial video:
Start new project (flash video)