Brent crude futures had fallen 81 cents, or 0.9%, to $94.93 a barrel by 0354 GMT.
U.S. West Texas Intermediate (WTI) crude futures inched up from Monday to $88.57 a barrel, and were $1.70 higher, or 2.0%, than Friday's close. There was no settlement on Monday, the U.S. Labor Day holiday.
The Organization of Petroleum Exporting Countries and allies led by Russia, together called OPEC+, decided to reverse a 100,000 bpd increase for September after top producer Saudi Arabia and other members voiced concern about the slump in prices since June despite tight supply.
