Two of the biggest independent oil explorers in the North Sea have predicted a further 10,000 jobs will be lost from the sector, indicating a growing acceptance that oil prices are stuck in a prolonged slump.

Repsol SA said Thursday it will sell €6.2 billion ($7.1 billion) of noncore assets through 2020 as part of a cost-cutting drive, which also includes a significant cut in oil-exploration spending.

He gave the warning in a statement as Schlumberger reported third-quarter earnings per share that were 48 per cent below the equivalent period of 2014, but slightly above analysts’ expectations.

The business environment deteriorated further in the third quarter. However, the cost reduction actions we took in previous quarters and the acceleration of our transformation program enabled us to protect our financial performance in what is shaping up to be the most severe downturn in the industry for decades. As a result of our actions, we have been able to deliver pretax operating margins well above those seen in any previous downturn and we have continued to generate significant liquidity with free cash flow of $1.7 billion in the third quarter, representing 170% of earnings.

Russia has for years been muscling in on Asian markets where Saudi Arabia was once the unchallenged dominant supplier. But now Riyadh is retaliating in Moscow's backyard of Europe with aggressive price discounting.

Brent crude was down 24 cents at $49.00 a barrel. Prices have more than halved from June 2014. U.S. crude fell 39 cents to $46.27 a barrel.

Spanish oil major Repsol said on Wednesday its net profit could fall by up to 22 percent in 2015, hit by low crude prices and a loss of value of some of its North-American assets which will trigger a big impairment charge in the third quarter.

World economic growth has been revised down to 3.1% for 2015 and to 3.4% for 2016. While OECD growth remains unchanged at 2.0% for 2015 and 2.1% in 2016, major emerging economies are increasingly facing challenges. China’s and India’s growth forecasts have been revised down by 0.1 percentage points to now stand at 6.8% and 6.4% for China and at 7.4% and 7.6% for India in 2015 and 2016, respectively.

The demand outlook for next year is looking softer mainly due to recent downgrades to the macroeconomic outlook and expectations that crude oil prices will not see repeats of the heavy losses of 2015.

"Considerable uncertainties" surrounded the U.S. economic outlook, particularly the drag on exports from slowing global growth, low investment caused by the decline in oil prices and a “disappointing” recent drop in U.S. job growth.

The oil price collapse over the past 16 months has forced the world’s biggest energy companies to cut hundreds of billions of dollars in future spending to bolster their balance sheets. But Ali al-Naimi — oil minister and architect of the Saudi strategy to maintain output and keep prices low to hobble its rivals — voiced a commitment to press on with investments in exploration, production and refining.

EIA estimates that total U.S. crude oil production declined by 120,000 barrels per day (b/d) in September compared with August. Crude oil production is forecast to decrease through mid-2016 before growth resumes late in 2016. Projected U.S. crude oil production averages 9.2 million b/d in 2015 and 8.9 million b/d in 2016.

Eurasia Drilling’s top shareholders and management have proposed taking the oil services company private, after Schlumberger walked away from making a $1.7bn investment following resistance from Russian regulators.

Saudi Arabia’s policy has resulted in about $220 billion worth of investment cuts worldwide, much of which is a result of project deferrals, including deepwater projects off West Africa and in the Gulf of Mexico.

The fund’s half-yearly fiscal monitor report shows that in the past three years a hefty budget surplus in Saudi Arabia has been turned into a deficit of more than 20% of GDP – double the shortfalls seen in the UK and the US during the worst of the global slump of 2008-09.