EIA's monthly drilling productivity report for May now posted. Link here: http://www.eia.gov/petroleum/drilling/.
Bakken pdf here. Some data points:
Bakken region oil production for May, 2016: decreased by 31,000 bopd from April, 2016.
- production change from legacy wells: a decrease of 55,000 bopd
- production change from new wells: an increase of 24,000 bopd
- Niobrara, increased by 23 bbls to 915 bbls/day/new well
- Eagle Ford, increased by 23 bbls to 994 bbls/day/new well
- Bakken, increased by 17 bbls to 832 bbls/day/new well
- Permian, increased by 13 bbls to 493 bbls/day/new well