3D Rectangular Import

Use the 3D Rectangular Import method if neither your x/y coordinates nor your in-line/cross-lines are in your trace header. The wizard will be totally dependent on the information you supply. You will need a bin map to determine the number of in-lines and of cross-lines, in-line/cross-line labeling, and coordinate locations for three in-line/cross-line bins.

Your SEG-Y file must be padded to a rectangle to use this import option.

  1. Select <3D Rectangular Import> button from the Select Coordinate Import window if neither your x/y coordinates nor your in-line/cross-lines are in your trace header. View image

  1. Click <Next> at the bottom of the Select Coordinate Import dialog box. A new window will open. View image

  1. Enter the total number of in-line/cross-lines in SEG-Y file under Total Number of In-line/Cross-Line in SEG-Y File. Remember that WinPICS assumes that your file has been sorted in the in-line direction.
  2. Enter the Start In-line and Start X-line under Labeling In-line/X-line. The End In-line and End X-line will automatically be calculated from the total number of lines and the starting line. If the file has been decimated, enter a In-line Step and X-line Step.
  3. Enter the x/y coordinates for two in-line/cross-line locations on a single in-line. This provides the in-line bin size of your file. It is important that you use in-line and cross-line labels relative to your entries under Labeling In-line/Cross-Line.
  4. Under Defining Point Perpendicular, enter the x/y coordinates of a third point that falls on one of the cross-lines of the first two points. This provides the cross-line bin size and geometry of the 3D data area.
  5. Set Advanced 3D Import Options, as needed. The defaults are usually okay.
  6. Toggle the <Convert Coords> button if you need to modify the coordinates projection.<
  7. Click < Process 3D Coordinate Import>. A dialog box will open, summarizing the in-line/cross-line angle, in-line bin size, and cross-line bin size. Click Yes if these parameters are correct.
  8. Click < Preview Map Location> to view the coordinate locations of your 3D area in your map window.
  9. Click on <Next> to proceed to the Line Intersections and Seismic Import Properties dialog box.

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