Saudi Arabia has cut its crude-oil production by at least 486,000 barrels a day since October, said a person familiar with the kingdom’s output, bringing the world’s largest exporter of petroleum swiftly into line with OPEC’s deal to raise prices.

Russia cut its oil production in early January by around 100,000 barrels per day (bpd) from the previous month after an agreement with OPEC to cap global crude output, two sources from the energy sector told Reuters on Monday.

The decline in December comes as OPEC, which controls around 40 percent of global supply, is planning to curb output in a bid to boost oil prices. The organization reached a historic deal last month with Russia and other non-members to cut global production by almost 1.8 million barrels a day starting this month.

Russia produced over 650bn m³ of gas in 2016, about 0.6% more than the previous year, the statistics of the Central Dispatching Department of Fuel Energy Complex (CDU TEK) indicate. A Russian cubic metre of gas contains about 10% less energy than a standard cubic metre owing to the higher temperature it is measured at.

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.

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.

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.

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.

Japanese refiners have received notices of crude supply cuts from "some producers" for January loading, following OPEC's November 30 decision to cut production.