Gazprom's gas prices are pegged to oil with a six-month lag, which means its customers are currently paying the equivalent of $45-$50 per barrel seen in January 2015 when oil prices crashed following a decision by OPEC not to reduce output.

Russia's economy is showing signs of stabilisation after slumping under pressure from Western financial sanctions and Russian counter-measures. Low international prices for its oil exports have added to pressure on the rouble and government finances.

BP’s second-quarter replacement cost (RC) loss was $6,266 million, compared with a profit of $3,182 million a year ago.

Claudio Descalzi, Chief Executive Officer, commented: “In the first half of the year we have achieved excellent industrial results across our businesses, which enable us to revise upwards several of the targets set out in the strategic plan presented inMarch. In upstream we delivered record production growth and we have significantly contained costs. Furthermore, the recent start-up of production in the Perla field in Venezuela, and forthcoming start-up of Goliat in Norway will provide an important contribution in the second half. The mid-downstream businesses all reached profitability, thanks to the strong progress we have made in restructuring our refineries and petrochemical plants, successful renegotiations of gas contracts and further interventions on efficiency. These actions have helped to contain the impact of thefall in hydrocarbons prices, both in terms of economics and cash generation. Despite the halving of oil prices, we have generated €5.7 billion of cash flow, in line with the first half of 2014, which has financed almost all capital investment in the half year. This is a very significant result, given that self-financing investment is the main challenge facing the sector today. These better than expected results enable me to confirm the proposal of an interim dividend of €0.40 per share to the Board of Directors, on September 17”.

Compared with the second quarter 2014, CCS earnings excluding identified items benefited from strong Downstream results reflecting steps taken by the company to improve financial performance and higher realised refining margins. In Upstream, earnings were impacted by the significant decline in oil and gas prices and decreased production volumes, partly offset by lower costs and depreciation.

Despite falling crude prices, Total managed to report a better result as its output for the quarter grew and cost cutting measures paid off. Crude oil prices have more than halved from their peaks last year. West Texas Intermediate (WTI) and Brent crude oil futures - the benchmarks for crude oil prices are currently trading at $47.86 per barrel and $53.07 per barrel respectively. During the quarter, oil traded around $60 per barrel.

Saudi Arabia is expected to raise prices for crude it sells to Asia in September due to a stronger Dubai benchmark, traders and analysts said on Monday, adding that the top oil exporter will be wary of a hike so big it would threaten its market share.

Weatherford International plc (NYSE: WFT) reported a net loss before charges of $77 million ($0.10 net loss per share non-GAAP) on revenues of $2.39 billion for the second quarter of 2015. GAAP net loss for the second quarter of 2015 was $489 million, or a net loss of $0.63 per share.

Exxon Mobil Corporation today announced estimated second quarter 2015 earnings of $4.2 billion, or $1 per diluted share, compared with $8.8 billion a year earlier. Higher Downstream and Chemical earnings were more than offset by the impact of weaker Upstream realizations and lower asset management gains.

Chevron Corporation (NYSE: CVX) reported earnings of $571 million ($0.30 per share – diluted) for second quarter 2015, compared with earnings of $5.7 billion ($2.98 per share – diluted) in the 2014 second quarter.