Helms said operators in the state are telling him they're adjusting to a "lower for longer" price environment.
North Dakota produced about 1.15 million barrels a day of oil in December, according to preliminary figures. That's a 2.5 per cent drop from the previous month and 6.5 per cent less than the monthly record of almost 1.23 million barrels a day set in December 2014. The state forecasts output to fall below 1 million barrels a day in early 2017.
"What we're seeing is the first real production decline," with wells being put on inactive status, Helms said. The rig count is already down 36 per cent, from 64 in December. Another 10 or 11 rigs may be idled if prices stay at current levels, according to Helms.
Operators are now even more committed to running fewer rigs as oil prices remain at very low levels.
"Operators are now even more committed to running fewer rigs as oil prices remain at very low levels," the state's Department of Mineral Resources said in a statement announcing production numbers for December. The agency said it expects prices to be relatively low at least until the third quarter of 2016.
While North Dakota's unemployment rate is still the lowest in the country -- 2.7 per cent in December, according to the US Bureau of Labour Statistics -- the state shed 4,000 jobs that month.
We still anticipate that we're going to see bankruptcies and financial problems for some of our smaller, more leveraged Bakken operators.
Among US states, North Dakota had the largest month-to-month and year-over-year percentage decline in employment during the last month of 2015, according to the bureau.
North Dakota's oil industry boomed earlier in the decade when producers used techniques such as hydraulic fracturing to tap into the state's Bakken shale play.
In the coming months, banks will be scrutinising the finances of some of those operators, with a wave of debt "redetermination" hitting the industry, according to Helms.
"We still anticipate that we're going to see bankruptcies and financial problems for some of our smaller, more leveraged Bakken operators," he said.