REUTERS

Members of the Organization of the Petroleum Exporting Countries (OPEC) will meet next week on November 30 in Vienna to decide on the details of an agreement to cut output that the group has been trying to hammer out since September, Reuters reported.

Oil prices were lower in the morning but turned positive after the Energy Information Administration said U.S. crude stocks unexpectedly fell 1.3 million barrels last week.

Read alsoReuters: Oil prices fall as strong dollar wipes out OPEC cut optimismIn the U.S. market, West Texas Intermediate (WTI) crude oil futures CLc1 rose 8 cents to $48.11 a barrel by 12:35 p.m. EDT (1735 GMT) after trading between $47.40 and $48.43.

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Brent crude futures LCOc1 were up 5 cents at $49.16 a barrel, also trading in $1-range between $48.56 and $49.50.

Calendar spreads, the difference in price between one month and the next in the futures market, showed little signs that traders are pricing in a big change in market fundamentals.

The front to second-month WTI calendar spread CLc1-CLc2 traded at its widest level in seven months on Tuesday, although it narrowed slightly on Wednesday. The one to six-month spread CLc1-CLc6 traded at one of the widest levels since August.

The WTI cash roll, which allows physical traders to roll long positions forward, traded down to negative $1.80 a barrel on Tuesday, the weakest since March.

All are indications that traders expect little change in oversupply in the market in the near term.

Doubts remain over whether the group will agree to a proposed cut of 4% to 4.5% that has been discussed. That would imply a supply cut of more than 1.2 million barrels per day, according to Reuters calculations.

Iraq has been one of the more reluctant members to agree to a cut, but Prime Minister Haider al-Abadi told reporters on Wednesday in Baghdad that they were willing to lower their output.

Separately, non-OPEC member Russia has said it would cut production, but domestic oil companies have not worked out details, muddying the outlook for cutting output.