It is has now been confirmed. The first measured 24 hour production from Bakken wells is a very good predictor of the future production of that well. And it has also been confirmed that new wells with higher well numbers are producing a lot less.
In the NDIC’s Daily Activity Reports they publish “WELLS RELEASED FROM “TIGHT HOLE” STATUS” as well as “PRODUCING WELL COMPLETED”. By searching these two lists, then eliminating the duplicates that appear on both lists, we find that perhaps 70 to 80 percent of all wells report their first 24 hours of measured production. It is listed as “BOPD” (Barrels Oil Per Day) and “BWPD” (Barrels Water Per Day). An example below, and notice the second well listed does not give any production numbers: