The head of oil in Saudi Arabia reaffirmed the country's commitment to supplying oil resources to meet increasing demand in Asia, Reuters reported. Oil Minister Ali al-Naimi recently visited China and said that oil demand in Asia is still strong, citing the increasing need for energy as the middle class grows.

Imports from the European Union (EU) will drop because Russian gas is now competitive, according to state-run NAK Naftogaz Ukrainy. Flows from Slovakia, the EU’s biggest supplier to Ukraine, may fall by a quarter from May, Tomas Marecek, the chairman of Slovak grid operator Eustream, said.

Russian oil and gas condensate production, among the world's largest, remained at a post-Soviet record level of 10.71 million barrels per day in April, underpinned by a recent recovery in oil prices, Energy Ministry data showed on Saturday.

Monthly average crude oil prices increased in February. The average domestic crude oil first purchase price rose $1.29 (3.0 percent), to $44.35 per barrel.

Chevron Corp. reported first-quarter earnings of $2.6 billion, down from $4.5 billion in first-quarter 2014. Sales and other operating revenues in first quarter totaled $32 billion, compared with $51 billion a year earlier.

ExxonMobil Corp. reported first-quarter earnings of $4.9 billion, down from $9.1 billion during first-quarter 2014 due in part by upstream losses in the US. The total, however, exceeded analyst expectations.

In the case of Gazprom, the commission has found that the Russian energy company charges different prices across the EU. Lithuania, for instance, at times pays a third more than Germany.

Russian natural gas accounts for roughly a third of all foreign supplied natural gas coming into Europe. Russia’s biggest partner is Germany. In that state, Russia’s presence is on the upswing.

U.S. economic growth braked more sharply than expected in the first quarter as harsh weather dampened consumer spending and energy companies struggling with low prices slashed spending, but there are signs activity is picking up.

Suncor Energy Inc., Canada’s largest crude-oil producer, on Wednesday reported a first-quarter net loss and a 90% decline in operating profit as a recent slump in global oil prices offset the company’s effort to cut costs and boost production.

Norway’s $916bn oil fund on Wednesday trumpeted its best-ever quarterly return, boosted by monetary stimulus in Europe that put a rocket under the region’s stock markets.

Eni SPA reported a first-quarter consolidated adjusted operating profit of €1.57 billion, down 55% from first-quarter 2014. The company says the decline was driven by lower crude oil prices, and only partly offset by a better performance recorded in upstream activity and in all other business segments.

National Oilwell Varco, Inc. (NYSE: NOV) reported that for its first quarter ended March 31, 2015, it earned net income of $310 million, or $0.76 per fully diluted share, compared to fourth quarter ended December 31, 2014 net income of $595 million, or $1.39 per fully diluted share. Excluding other items of $122 million in pre-tax charges related to an early retirement program, $9 million of Venezuela asset write-down, and $69 million of nonrecurring foreign tax exposure, net income was $466million, or $1.14 per fully diluted share, down 33 percent from the fourth quarter of 2014, and down 12 percent from the first quarter of 2014, excluding other items from all periods.

BP suffered a sharp slide in first-quarter profits, hit by the plunge in crude prices that has battered revenues across the oil industry.

Despite challenging oil and gas prices in the quarter, Statoil (OSE:STL, NYSE:STO) delivered Adjusted earnings of NOK 22.9 billion and NOK 7.0 billion after tax. Statoil reports a negative IFRS Net income of NOK 35.4 billion due to impairments.