The most important challenge facing Iran and all the Iranian technical and professional elite is high recovery of coefficient, he said, adding that raising the recovery coefficient by one percent will result in 700 billion barrels or let's say seven billion barrels; seven billion barrels with an oil sold for 50 dollars per barrel means 350 billion dollars more wealth for the country.

Venezuela said on Tuesday it will cut 95,000 barrels-per-day of oil production in the New Year in fulfilment of a producers' deal to reduce global output and strengthen prices.

London Brent crude for February delivery LCOc1 was down 1 cents at $55.15 a barrel by 0335 GMT (10.35 p.m. ET) after settling up 11 cents on Friday. Oil markets were closed on Monday after Christmas at the weekend. NYMEX crude for February delivery CLc1 was up 10 cents at $53.12 a barrel, after closing at a 17-month high on Friday.

Russia's output of oil products is expected to fall by about 2.5 percent in 2017 due to further work on a massive refinery modernisation programme aimed at boosting fuel quality, a deputy energy minister said.

A new deposit in Serbia’s Pannonian oil and gas basin may contain recoverable reserves of 432,000 tonnes, according to Russia's PJSC Gazprom Neft. The Idos-X-4 well was drilled to the Neogene-aged formation at a depth of 2,268-2,287 m in the Idos-Sever (Northern Idos) field.

U.S. Rig Count is down 47 rigs from last year's count of 700, with oil rigs down 15, gas rigs down 33, and miscellaneous rigs up 1. Canadian Rig Count is up 98 rigs from last year's count of 126, with oil rigs up 62, gas rigs up 31, and miscellaneous rigs up 5.

Iraq is fully committed to delivering on OPEC’s Nov. 30 agreement to reduce supplies, Oil Minister Jabbar al-Luaibi said Thursday in Cairo at a meeting of the Organization of Arab Petroleum Exporting Countries, known as OAPEC.

Petroleo Brasileiro SA said on Wednesday it will sell $2.2 billion worth of assets to France's Total SA, including stakes in oilfields and two thermal power stations.

Preliminary production figures for November 2016 show an average daily production of 2 153 000 barrels of oil, NGL and condensate, which is an increase of 37 000 barrels per day (approx. 2 percent) compared to October.

Benchmark Brent crude oil futures LCOc1 were trading up 56 cents, or 1 percent, at $55.48 a barrel at 1329 GMT. U.S. West Texas Intermediate (WTI) crude futures CLc1 were up 29 cents at $52.41 a barrel, not far off a one-week high of $52.52.