Importing HAS Horizon Files

Follow these steps to import 2D or 3D HAS (Horizon ASCII) horizon files into WinPICS:

Select either | Import Horizons (HAS) | Import 2D Horizons (HAS) or | Import Horizons (HAS) | Import 3D Horizons (HAS) to open the Select Horizon Files dialog box.
Locate your horizon file, and click <Open> to open the Import Horizon Values dialog box. View image

From the Import Horz Value Into list, select whether to import the horizon values as time values or amplitude values. If you select time values, you also need to set the Units list to microseconds, milliseconds, or seconds.
From the Adjustments list, select if you want to remove or keep any bulk shifts applied to the horizon picks.
In the Match Values According To section, choose whether to match horizon values according to the closest Shotpoint (2D-only) or In-line/X-line Num (3D-only), or X/Y Coordinate (both 2D and 3D).

Matching horizon values to X/Y Coordinates is generally safer since shotpoints and in-line/cross-line numbering can vary from one imported version to another.

If the horizon values are time units, set the Amplitude Extraction Options as follows:

Set Amplitudes to 0 - Select if you have no need for amplitude values.

Extract Amp From Seismic (linear interp) - Select if you want to extract amplitudes from the seismic using linear interpolation. Lines are drawn between each horizon pick and amplitudes are extracted along those lines.

Extract Amp From Seismic (linear interp) - Select if you want to extract amplitudes from the seismic with auto picker. The horizon is auto-picked between imported horizon picks and amplitudes are extracted at each new horizon pick.

Click <OK> to import the horizon.

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