Creating a Windowing Model

Windowing models define a series of time/depth layers bounded by constant time/depth values and/or horizons. Windowing models are useful in Spectra Analysis, model building and other processes requiring layer or interval based analysis.

Create a windowing model

Create a windowing model
  1. In the Control Panel, open the Model tab.
  2. Click the blue "+" icon and select New model.
  3. Type a name and click OK.
  4. Vertical dimension of model: select TWT (ms) or TVDSS (m).
    • The default model starts with one layer, beginning at the top and ending at the bottom (of a trace or model).
  5. In the details panel, click the blue "+"  icon to add a layer boundary.
    • A boundary specifies the time or depth where one window ends and the next window begins.
    • In the above example, there are three windows: 
      • "Window 1" : top of model to a horizon, “horizon_layer_1". 
      • "Window 2": “horizon_layer_1” to 1000ms
      • "Window 3": 1000ms to "horizon_layer_2"
      • "Window 3": "horizon_layer_2" to the bottom of the model
    • Click the red "x" icon to remove a boundary.
  6. Layer boundary:
    • Constant value: Use a single time or depth value for the boundary.
    • Horizon: Use values from a horizon for the boundary with an optional offset. The value depends on the coordinates or the location selected for the model.
  7. Reorder model layers by dragging and dropping the dotted handle next to them. This allows you to insert new layers in between existing layers.
  8. Set layer conformability: Enable stratigraphic conformability rules
    • Top: Layer values conform to the previous boundary (above).      
    • Base: Layer values conform to the next boundary (below).      
    • Proportional: Layer values conform proportionally between both boundaries.      
    • Flat: Layer values conform with the vertical dimension (TWT or TVDSS)
    • Horizon: Layer values conform to a selected horizon
    • Dip Field: Layer values conform to dip field curvature (see Dip Field process).      
  9. Taper length (ms): A ramp applied to values near layer boundaries.
  10. Max Moveout First Interface (ms): The amount of moveout to apply to the model, varying with offset.
    • Use 0 for a model that does not vary with offset