Handy tool for computing seismic fold and trace density for simple orthogonal 3D land seismic geometries. Quickly check a design with this back-of-the-envelope app. You can even convert between metric and Imperial units.
The tool is very simple: just enter the maximum offset (or estimate this with depth), give the source and receiver line spacing and station intervals, and tap Calculate. If the live patch is smaller than the maximum offset implies, you can choose to enter a patch size. This reduces the effective area, and therefore the fold and trace density.
When you're done you can email the design to yourself or a colleague.
