Investing.com - Oil Tuesday swung between losses and gains as the market weighed higher U.S. output against hopes of an extension of production cuts by other major producers.
U.S. crude was off 12 cents, or 0.26%, at $46.31 at 08:15 ET. Brent crude shed 10 cents, or 0.20%, to $49.24.
American Petroleum Institute stockpile data are due out later in the session.
These will be followed Wednesday by Energy Information Administration inventories.
The EIA is forecast to report a fall in U.S. crude stocks of 1.8 million barrels in the latest week.
Inventories remain close to record levels as U.S. shale activity continues to expand.
That has undermined the impact of an accord on output cuts of 1.8 million barrels a day in the first half by OPEC and non-OPEC producers.
Saudi Energy Minister Khalid al-Falih said Monday he was confident of an extension of the accord to the end of the year or beyond.