US President Donald Trump has raised the stakes for a meeting of an OPEC+ ministerial panel next month, with his call for the group to lower oil prices.

"You've got to bring down the oil price, you've got to end that war. They should have done it long ago," President Donald Trump said.

Oil prices settled slightly higher on Friday but posted a weekly decline, ending four straight weeks of gains, after U.S. President Donald Trump announced sweeping plans to boost domestic production while demanding that OPEC move to lower crude prices.