Supply and demand for oil are coming back into balance, and the response of shale producers to rising prices will help determine how high crude can go, Christof Ruehl, the global head of research at Abu Dhabi Investment Authority, said Wednesday in an interview in Dubai. Ruehl’s view that the re-balancing will take until at least the middle of 2017 contrasts with the more optimistic outlook of some industry leaders and analysts who foresee demand nearing supply by the end of this year.

With income falling, the 13 members of the Organization of the Petroleum Exporting Countries (OPEC) posted a combined current account deficit of $99.60 billion in 2015, compared with a surplus of $238.10 billion in 2014.

Brent crude futures were up 4 cents at $50.66 a barrel, after settling down 3 cents at $50.62 on Tuesday.

The U.S. crude benchmark rose 2.9% to settle at $49.37 a barrel on the New York Mercantile Exchange, while the global Brent contract gained 3% to end at $50.65 a barrel on the ICE Futures Europe. Both contracts were rebounding after a six-day losing streak.

The California-based fund manager, which is among the largest shareholders of natural resources groups including BP Plc, Total SA, Glencore Plc and Chevron Corp. through dozens of funds, believes that $50 a barrel isn’t high enough to stimulate the increase in supply needed to meet future oil demand.

"Рыночные инструменты работают. Общее недоинвестирование — порядка 550 миллиардов долларов за последние 3 года. Это огромный уход инвестиций. Мы видим даже риски того, что через несколько лет возникнет недостаток нефти из-за недоинвестирования и растущего спроса", - отметил Министр энергетики.

Стоимость добычи нефти в России – $2 за баррель. Увеличить добычу нефти в 2015 г. удалось благодаря новым проектам, которые были запущены с поддержкой государства. В России уникальная ресурсная база, отметил Сечин. Это позволит удержать добычу стабильной до 2035 г.

Brent crude futures' front-month contract LCOc1 settled up$1.98, or 4.2 percent, at $49.17 a barrel. The front-month in U.S. crude's West Texas Intermediate (WTI) futures CLc1 rose $1.77, or 3.8 percent, to settle at $47.98. It fell $1.80 in the previous session.

Crude oil prices rallied to a 2016 high above $51/bbl in June, stoked by continuing outages in Nigeria and Canada as well as a steady decline in US oil production. May marked the third straight month of average price rises in Brent and WTI futures.

The August Brent crude contract on London’s ICE fell 52¢ to $48.93/bbl, its lowest settlement since June 3. The September contract was also down 49¢ to $50.33/bbl. The July gas oil contract settled at $443.50/tonne on June 14, down $9.75.

Brent crude oil futures LCOc1 fell to $49.74 per barrel, at 1327 GMT, down 80 cents, after trading as low as $49.61.

OPEC predicted that the global oil market will be more balanced in the second half of this year as demand rises and rival supplies falter, echoing views expressed by ministers at the group’s meeting this month.

“There are still no fundamental factors for growth in oil prices,” Siluanov said. “We should plan our financial resources on that basis.”

Brent crude for August delivery settled at $51.44/bbl on the London market. It was the highest price for front-month Brent since Oct. 9, 2015.

Policymakers must find new ways to promote private sector development and help their economies diversify away from oil.