Economic Validation Report

To guarantee economic results are consistent between updates, ComboCurve generates a variance report between the current version and the soon to be released version.  To create this report, over 2,500 unique cases are run to evaluate all possible inputs across the economic models to ensure that there have not been any unintentional changes in the calculations. The following will document changes made to economic calculations across release versions:

04.13.2024 v36 Release

1. Daily resolution of fixed expenses applied to econ groups now account for the number of producing days in the final month of economic life.
   
2. Break Even calculations will consider capex applied at and after economic limit.
   
3. Setting a max cumulative cashflow economic limit based on a discount rate greater than 0 will no longer run the well if the cumulative cashflow of the input discount rate is negative.
   
4. A Capex Paying/Earning WI of 0% will now correctly apply a 0 value for the specified capex line.
   
5. When all three differentials for a keyword are being used and only the 3^rd differential is a ratio of base price remaining, the first two differentials will now be summed together before applying the ratio.
   
6. Emissions in Carbon Networks that are defined with yearly inputs (Combustion, Pneumatic Device, Pneumatic Pump, Reciprocating Compressor, Centrifugal Compressor nodes) are now allocated on a monthly basis based on the number of days in each month.
   
7. Emissions in Emission models with the unit “MT/Well/Year” are now all allocated on a monthly basis based on the number of days in each month.
   

05.24.2024 v36.1 Release

1. Increased the number of significant figures used in compositional economic models.
   
2. Group econ calculations will now allocate to additional combos in Scenario runs with multiple combos.
   

07.09.2024 v36.2 Release

1. This release does not contain any updates that change any economic calculations.