Oil prices fell on Friday, as the US dollar rallied against most of its counterparts, and after data showed a rise in OPEC production this month.
Baker Hughes will reveal its count of the oil and natural gas rigs in the United States later today.
A survey by Reuters showed that OPEC's oil output rose 100,000 barrels per day to 25.17 million in April.
While OPEC-Plus' compliance with the production quotas fell to 123% in April from 124% in March.
The dollar index rose against a basket of major currencies by 0.7% to 91.2 points as of 18:46 GMT, after hitting a high of 91.3 points and a low of 90.5 points.
As of 18:43 GMT, WTI crude June futures fell 2.3% to $63.5 a barrel, after hitting a day high of $64.9 and a low of $63.08.
Brent June futures fell 1.9% to $67.2 a barrel, after hitting a high of $68.4 and a low of $67.06.