Create Horizon from Well Markers

Use this operation to create an IL/CL or X/Y horizon from a set of well markers. The operation uses the marker values from enabled wells and optionally interpolates between them.

Note: The Calculate button is disabled if a horizon is selected in the map view that is waiting for another operation. Complete the previous operation before continuing.

Where is the Create Horizon ... operation?

The Create Horizon from well markers operation is found in the Map View, under the Operations tab (along with other horizon operations).

  1. Open the Map View.
  2. Expand the left panel and open the Operations tab.
  3. At Operation, select Create Horizon from Well Markers.

Tip: Click the Help icon to read more information about this operation.

Configuring the operation

The Create Horizon from Well Markers operation is found in the Map View, under the Operations tab (along with other horizon operations).

  1. Select a Marker
    • Review the included wells, available markers and their values in the Well Markers Table.
  2. Select the Vertical domain for the resulting horizon.
  3. Enable Sparse to create a horizon of points only at the markers (i.e. without interpolation).
    • Export a sparse horizon to create a list of X/Y and depth values for a marker across many wells.

If Sparse is not enabled:

  1. At Area, select a polygon or probe to fill
    • Markers outside the area are used in the calculation and influence the results.
    • Disable wells in the Control Panel if their values should not be used.
  2. At Spacing, enter the increment for the horizon grid.
  3. At Survey, select the survey to define the output geometry for the horizon.
    • If a survey is selected, extents are calculated from the selected area and spacing.
  4. Enable Faults to prevent the interpolation from crossing fault planes.
    • Insight honours all enabled faults in the Control Panel.
    • Unassigned fault sticks are not used.
  5. Fault Polygon: Fault polygons are excluded from the output (if selected).
  6. Interpolation Settings: (see How Interpolation Settings Work)
    • Spreading: natural neighbour weighting
    • Smoothing: inverse-distance weighting
    • Strike/dip: define the influence in the strike direction.
    • Direction (degrees): The azimuth of the strike axis, in degrees (clockwise from North).
  7. Click Calculate to start the operation.

Completing the operation

After running the operation:

  • At Class: Choose the Display Class for the results
  • Use min and max from class settings (checked)
    • Use amplitude ranges from the class. Update the range in the display class.
  • Use min and max from class settings (not checked)
    • Set specific a min and max value for this result.
    • Click Adjust to set the Min and Max from the extracted amplitude.
  • Click Discard to cancel this calculation and delete the results.
  • Click Create to create a new horizon containing the extracted values.
  • Click Add property to store the result as a horizon property.

Note: By default, the new horizon will be named: “Well Marker: marker_name (domain survey)”.  For example, the operation above will yield a new horizon called "Well marker: Sand_B5_base (TVDSS (m) IL/CL)". To rename the horizon, see Horizon Details and Configuration.