Brent crude oil futures LCOc1 were up 85 cents a barrel at $49.75 by 1000 GMT (5:00 a.m. ET), having earlier risen $1 in a push against the $50 mark for the first time since the end of October. U.S. West Texas Intermediate (WTI) crude futures CLc1 were up 68 cents, or 1.4 percent, at $48.92 a barrel.

Iranian oil and gas sectors are very much attractive to foreign investors because of low cast of production, a senior expert said on Monday.

Nigeria, which was Africa's largest oil producer until a few months ago, slipped into recession after its economy shrank by 2.06% in Q2, as the impact of militant attacks on oil facilities weighed on the country's economy.

Brent crude oil LCOc1 was up 60 cents a barrel at $47.23 by 1120 GMT (6:20 a.m. ET). U.S. light crude CLc1 was up 50 cents at $46.07.

"We will do everything that our partners from OPEC are expecting. To freeze oil production is not an issue for us," Putin told a news conference in Lima after the APEC summit.

The Organization of the Petroleum Exporting Countries agreed in September to reduce output to help draw down a global supply glut that is weighing on oil prices, but left the details of the plan to be worked out later. The group is holding a so-called “technical meeting” at their Vienna headquarters Monday and Tuesday to discuss the mechanism for implementing the September agreement. The technical meeting will prepare for OPEC’s ministerial meeting Nov. 30 in Vienna.

A senior official at the National Iranian Oil Company (NIOC) said on Friday that the country has signed three memoranda of understanding (MoU's) with three leading Russian oil companies for bilateral cooperation.

"I came here to meet with the Iranian petroleum minister just before attending the crucial meeting of OPEC members in Algiers and Minister Zangeneh assured me here that he would do and Iran would do everything possible to reach the consensus and to work for it," the official added.

Preliminary production figures for October 2016 show an average daily production of 2 099 000 barrels of oil, NGL and condensate, which is an increase of 486 000 barrels per day (approx. 30 percent) compared to September.

Domestic crude oil production in October was higher compared to the prior month, but was lower than the prior year, and the prior year to date. At an average of 8.6 million barrels per day, U.S. crude oil production in October decreased 8.0 percent from October 2015, but increased from September by 0.2 percent. October’s crude oil production was the third highest since 1985 and the second highest year to date in 31 years, since 1985.