Investing.com - Oil was down by over 1% Friday on persistent concerns of a supply glut.
U.S. crude was down 72 cents, or 1.61%, at $43.94 at 07:00 ET, while Brent crude lost 1.37% to $45.21.
The International Energy Agency (IEA) Thursday said the glut could extend into 2017 in the absence of a cut in output by OPEC.
OPEC plans to rein in output to 32.5-33 million barrels a day but doubts remain about whether it can get members to finally agree to that.
OPEC reported record output last month of 33.64 million barrels a day.
The cartel has until its formal meeting in Vienna on November 30 to broker a deal.
Baker Hughes weekly rig count data are due out later in the session.
The number of rigs operating in the U.S. currently stands at 450.
There is speculation U.S. shale output could rise under a Trump presidency.