How to enter Modified Harmonic parameters onto Analog table
- Randy Strauss |
- 14 steps |
- 51 seconds
1
Select the Asset for Modified Harmonic input.
2
Selecting the Asset Options form tab displays the dates that affect the Harmonic analog. Select the Production Forecast form tab.
3
Select the oil1 DCA Type field with a left-click. Observe that the oil1 Unit is in bbl/day. This example is going to leave that selection.
4
Select HARMONIC from the dropdown list.
5
Select the Dei input. A Harmonic doesn't use a b Factor because its definition equates it to 1.0 and uses a different set of equations to calculate the unknown parameters.
6
Type the desired Dei and press the enter key. This example will use 50%. Select the initial rate, qi, field.
7
Type the desired initial rate in bbl/day. This example is using 500 bbl/day. Select the final rate, qf, field.
8
Input the final rate. To follow this example type "1" and press the enter key. This example uses an artificially low rate to force the usage of R3's economic cut off during a model evaluation.
9
Observe the calculated End Date and Dend. Also notice that the Dmin is 0%.
10
Observe the calculated Seg. Rem, REM and EUR.
11
Select the Dmin field.
12
Type "7" and press the enter key. The minimum decline has been set to 7%.
13
Observe that the Dend and the Dmin are now equal.
14
Observe the changes to the Seg. Rem, REM and the EUR. This completes the input of a Modified Harmonic.
