I would assume that the 30 day rate is cumulative of all production thru 30 days.
Estimating a daily rate after 30 days is tougher. I would guesstimate based on the slope of the IP, 7 and 30 day rates. We know these wells decline rapidly.
I would go to Sundance's website. They should have a graph of a typical Bakken well as it moves thru it's production life. They should also have an average EUR for each well.
Bobwins
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