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, “Sample Horizon. 
      • "Window 2": “Sample Horizon” to 1000ms
      • "Window 3": 1000ms 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. 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).      
  8. Taper length (ms): A ramp applied to values near layer boundaries.
  9. 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