North Dakota's daily oil production rose 2% in April as rising crude prices encouraged companies to pump more, complicating OPEC's attempts to stabilize global markets.

The state, home to the Bakken Shale, pumped 1.05 million barrels per day (bbl/d) of oil in April, up from 1.03 million bbl/d in March, according to data from North Dakota's Department of Mineral Resources (DMR), which reports on a two-month lag.

Natural gas production rose 6% to 1.8 million cubic feet per day.

North Dakota's oil well count hit 13,717 in April, an all-time high. The state's drilling rig count has been steadily rising, with the count on June 9 at 55, 10% higher than in April.

North Dakota regulators said in a statement they expect oil prices to be weak through at least October. OPEC members last month agreed to maintain their own production cuts, though rising output in states like North Dakota has been offsetting the cartel's moves.

"The markets are watching to see if U.S. shale production offsets OPEC cuts keeping crude oil inventories high," Lynn Helms, the DMR director, said in a statement.