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.