Understanding the Common Reserves Category
The Common reserves category provides you a single place to enter values that you want to apply to all reserves categories or plans. In other words, if an entity’s working interest is the same for all reserves categories, you only need to enter it in Common—the value will automatically be inherited by all other reserves categories or child plans.
However, you can also override any reserves category or plan with a value that is different from Common. So if you want all reserves categories except one to use the same working interest, you can enter the value in Common and override it in the one category. See Override Inherited Values
It isn't necessary to have the Common reserves category selected to edit it. As long as the values you are entering are inherited directly from Common, edits to them are also applied to Common, regardless of which reserves category you are currently working in.
The default behaviour for the Common reserves category and the relationship between it and the other categories is different in new projects versus upgraded projects.
In new projects, all relevant tabs are linked to Common by default.
When you upgrade a Value Navigator project, all input values that can be linked to Common are configured as overrides—they are not linked to Common.
To link the values to Common one tab at a time, see Reset Overridden Values.
To link the values on several tabs (or the entire project) at once, see Remove Inputs.
Input Values
Only the following tabs contain values that can be inherited from Common:
| Tab | Subtabs |
|---|---|
| Economics | General |
| Interests & Royalties | |
| Prices & Costs (and all subtabs) | |
| Predictions | P/Z |
| Volumetrics | |
| Data|Plant |
Data Inheritance
Data entered in Working-Common is inherited by other reserves categories and plans through intervening plans and reserves categories, as displayed in the grey message bar below.
In the example above, the current plan/reserves category (New Plan 2-PDP) inherits data from Working-Common.
If you override an intervening plan/reserves category (New Plan 1-PDP, in the example below), the inheritance from Common is interrupted, and data is inherited from the overridden plan/reserves category, as displayed below.
If you override New Plan 2, it no longer inherits data from any other plan/reserves category, as displayed below.
If you reset New Plan 2, it reverts to inheriting its data from the next closest link in the inheritance chain.
If you reset New Plan 1, it reverts to inheriting data from Working-Common, as does New Plan 2.
For more information about how inherited and overridden values are displayed, see Inherited and Overridden Values, below.
For more information about overriding and resetting values, see Override Inherited Values and Reset Overridden Values.
Also see Plans.
Inherited and Overridden Values
When you open a tab with values that can be inherited from Common, one of three information bars is displayed on the tab, as described below.
Values Inherited Directly from Common
The yellow information bar indicates that values on this tab are inherited directly from Working-Common, as displayed in the breadcrumbs.
To override the values on this tab and enter values in Working-PDP, click Override.
To edit the values in Working-Common, you can make your edits in the current plan and reserves category (Working-PDP).
Values Inherited Indirectly from Common or other Plans/Reserves Categories
The grey information bar indicates that values on this tab are inherited indirectly from Working-Common (through Working-PDP and New Plan 1-PDP) or that the values are inherited from another plan/reserves category, as displayed in the breadcrumbs.
To override the values on this tab and enter values in New Plan 2-PDP, click Override.
To edit the source of the values on this tab (Working-Common, in this example), click Edit Source.
Overridden Values
The green information bar indicates that values on this tab are not inherited from any other plan or reserves category. The green information bar is displayed when you are viewing Common or when you are viewing any other tab that has overrides.
To remove the overrides (in any reserves category other than Common), and enable a tab to inherit values from its source, click Reset.