The Calgary-based pipeline operator filed papers late Friday seeking arbitration under the North American Free Trade Agreement, arguing that TransCanada had every reason to believe it would win approval to build Keystone XL.

“We’re looking to raise about $40 to $50 billion,” Kachikwu said in the Bloomberg interview. “Going to places like China, which have a huge capacity to put money in the oil sector, is very helpful.”

Oil output will reach 69 million tonnes of oil equivalent in 2016, against 67 million tonnes last year, while gas production will rise to 132.2 billion cubic meters (bcm) from 128.3 bcm in 2015 and 130.9 bcm in 2014, a Sonatrach report showed.

U.S. Rig Count is down 3 rigs from last week to 421, with oil rigs down 7 to 330, gas rigs up 4 to 90, and miscellaneous rigs unchanged at 1. Canadian Rig Count is up 7 rigs from last week to 76, with oil rigs up 8 to 36, gas rigs down 1 to 39, and miscellaneous rigs unchanged at 1.

Brent crude futures were down 15 cents at $48.26 a barrel by 0238 GMT on Monday, after settling down $2.50, or 4.9 percent, at $48.41 on Friday. U.S. crude was down 25 cents at $47.39 a barrel, after closing down $2.47, or 4.9 percent, on Friday.

U.S. crude was down $2.77 at $47.34 a barrel at around 0314 GMT. Brent crude was down $2.75 at $48.16 a barrel.

"Such huge outflows raise a question as to whether upstream business will generate enough cash, and where capex will figure in the priority order of companies," said Andrew Slaughter, executive director, Deloitte Center for Energy Solutions. "When we annualized operating cash flows of all the three company sets in 2015 for the next five years, assuming a $55/bbl average oil price, we see a total funding gap of up to $2 trillion from operations."

Global upstream development spending from 2015 to 2020 has declined 22%, or $740 billion, since fourth-quarter 2014. Including cuts to conventional exploration investment, the figure increases to just more than $1 trillion.

BP’s energy outlook this year foresees a compound annual growth rate of gas demand at 1.8% until 2035. In the OECD, this growth results from the coal-to-gas transition in power generation. The US major ExxonMobil supports this view, forecasting gas will account for 30% of the power sector and will equal coal by 2040.

"We have seen a large amount of short positions being closed while long positions have been opened," Novak said in reference to speculative bets - shorts - in the market that prices will fall, and the opposite - longs - that they will rise.

It is absolutely compatible with the Energy Union. It will be sustainable, affordable and help security of supply, he said. It will increase liquidity in Europe but nobody will be forced to buy the gas, which will be priced against hubs.

"We have such low production costs that we will always be able to cut the selling price by a dollar or two when it comes to fighting off a rival," said a senior source at Gazprom.

"We are glad that we've managed to maintain our positions on traditional markets, primarily in Europe," Sechin said pointing out to recent agreements with PKN Orlen to increase deliveries to Poland and the Czech Republic.

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.

"The Kingdom's oil policies are rooted in responsibility, and Saudi Arabia is seeking to maintain that balance while also giving heed to moderate prices for producers and consumers,"