Curve Interpolator/Extrapolator

Description Interpolate and/or extrapolate a well curve.
Module(s) Explorationist
Requirements Window Model
Related
Works with

The Curve Interpolator/Extrapolator process interpolates the well curve using the method defined for each layer in the windowing model, and/or extrapolates the well curve to the top and base of the model if necessary.

  1. In the Control Panel, go to View > New Single Well View.
  2. In the Single Well window, open the Process tab.
  3. At the tab header, click the blue "+" icon.
  4. Select New Curve Interpolator/Extrapolator.
  5. Type a name for the process and click OK.

Configure the Curve Interpolator/Extrapolator

  1. Curve: Select a well curve.
  2. Missing / Invalid Values: Choose the action when input variables are unavailable, null or invalid prior to filtering. This rule is applied when calculating each sample:
    • Interpolate: Interpolate missing values using the class interpolation setting.
    • Output is Null:
      • Output null (empty value) if the value of any curve is invalid.
      • Output null (empty value) if the result is invalid.
    • Output is 0:
      • Output zero if the value of any curve is invalid.
      • Output zero if the result is invalid.
  1. Windowing model: Select an existing windowing model (see Creating a Windowing Model).
  2. Method:
    • Formula: A constant number or a user defined formula such as V0+K.
    • Linear: Calculates a linear function based on the first and last point of the log curve in a window. If only 1 point is available, the value is extrapolated.
    • Volume: Where a log curve is not available, takes the value from the volume. Only a volume in the same domain as the output extent is accepted.
    • Horizon: Where a log curve is not available, takes the horizon property value.
  1. By default, the output curve name uses the following values: extrap: Curve Class Process Name.
    • For example: extrap: P Velocity Curve Extrapolator.
  2. Enable custom name:  Allow the user to define the process output curve name.
  3. Extent: Output can be in MDKB, TWT or TVDSS domain.
    • Enter the start, stop and step size.
    • Reset: automatically set the start and stop values to match the input curve.