Rate vs. time (BOPM)
Fit to my production (optional)
Paste monthly oil production in barrels per month (BOPM), one month per line, oldest first (or two columns: month number and BOPM). Zero or blank months (shut-ins) are fine: they hold their place in time but are left out of the fit. Click Fit, and the tool finds qi, initial decline and b by least squares on log rate, then uses them above.