WOR analysis

The water-oil ratio (WOR) analysis is an empirical method for trending water and oil production. For additional information on theory and concepts, see WOR forecasting theory. When a WOR analysis is added, it is initialized using a best fit.

This analysis works with your Harmony Forecast™ license.

Analysis Parameters pane

A WOR analysis can be added or displayed in an open worksheet while Cumulative Oil is on the x-axis, and at least one of the following is on the y-axis: WOR, WOR+1, or Water Cut. After you add a WOR analysis (see analyzing an entity), the selected analysis has its detailed parameters displayed in the Analysis Parameters pane.

Analysis Parameters pane

In this pane, you can specify / view the following parameters:

  • WORf — the final / abandonment water-oil ratio. It is initialized from the settings defined in the Options dialog box (see WOR options). This value is calculated when (Water Cut)f is specified, and this value must be in the range (0, ∞).
  • (Water Cut)f — the final / abandonment water cut. It is initialized from the settings defined in the Options dialog box (see WOR options). This value is calculated when WORf is specified, and the value must be in the range (0, 100).

Analysis Parameters toolbar

The Analysis Parameters toolbar has the following icon:

Show / Hide Results LineShow / Hide Results Line — shows (default setting) or hides the dashed-green line on the plot that represents the abandonment for the WOR analysis. It is initialized from the settings defined in the Options dialog box (see WOR options).

Line manipulation

Line manipulations are initiated by clicking-and-dragging:

  • Line — changes the slope of the trend line about the manipulation point.
  • Manipulation point (Manipulation point) — translates the line vertically or horizontally while maintaining the slope.

Analysis line customization

To change the line width and color of your analysis line, right-click the WOR analysis line and select Customize Line.

Customize Line dialog box

After you customize your line, the modifications are saved and applied to every worksheet that displays this analysis.

WOR options

WOR analysis options are accessed by clicking the Options icon (Options icon) on the main toolbar, or by clicking the Tools menu and selecting Options. In the Options dialog box, click Water Oil Ratio under the User Settings>>Analysis node.

WOR options

You can set the parameters that initialize water-oil ratio (WOR) analyses in Harmony Enterprise. These inputs can be overridden with each analysis, and the Options dialog box inputs are only used when the analysis is created. The WOR parameters and settings are as follows:

  • Show results line — shows / hides the green-dashed line for abandonment on your plot.
  • WOR — sets the abandonment WOR. Harmony Enterprise uses 49 bbl/stb as the default.
  • WC — sets the abandonment water cut (WC). Harmony Enterprise uses 98% as the default.
  • Initial Best Fit — specifies the percentage of your historical data that you want to be included in the initial best fit.