The foreign investment arm of India's top oil explorer ONGC is targeting $10-$12 billion of oil and gas asset purchases over the next three years, including more corporate acquisitions, its managing director said.

Vitol, the world's largest oil trader, believes the crude price will struggle to trade above $60 a barrel next year, as the effects of slowing global demand growth could be compounded by a return of Iranian and maybe even Libyan barrels.

Halliburton Company (NYSE:HAL) announced today that income from continuing operations for the third quarter of 2015 was $265 million, or $0.31 per diluted share, excluding special items. This compares to income from continuing operations for the second quarter of 2015 of $380 million, or $0.44 per diluted share, excluding special items. Adjusted operating income was $506 million in the third quarter of 2015, compared to adjusted operating income of $643 million in the second quarter of 2015. Halliburton's total revenue in the third quarter of 2015 was $5.6 billion, compared to $5.9 billion in the second quarter of 2015.

"The fourth-quarter oil demand will be mainly boosted by heating oil demand in Asia. And in 2016, North America and Asia will continue to drive the global oil demand growth," the country's third-largest refiner said in an earnings statement.

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.