West Texas Intermediate crude falls below $50 for first time since December, prompting fears about world trade.
The oil major continues to streamline the group after its $47bn takeover of BG two years ago.
Arrival of the gas also leaves questions over fracking in the UK
Trader punished Cobham after the UK aerospace group warned on profits for the fifth time in less than two years.
Oil giant and the rest of the industry suffers amid weak oil prices.
Traders pile into shares after Bank governor Mark Carney said rates could move in "either direction" this year.
Oil giant's fourth quarter profits misses expectations on $500m worth of impairment costs.
Strong eurozone data covering unemployment, inflation and economic growth lifts London market.
The oil major sells down its interest in the North Sea as it streamlines its business after BG purchase.
The offshore bloc is estimated to contain up to 9 billion barrels of oil.
UK court ruled that Nigerian communities devastated by oil spills cannot have claims against Shell heard in UK.
In a turbulent business environment chief executives continued to search for transformative deals.
Oil and gas giant Shell opts to buy electricity from a wind farm it holds a 50% stake in.
The funds will be used to finance a 500 kilowatt test facility, which KPS is planning to open in 2017.
Oil and gas stocks rose on crude production cuts, but leading indices slid as Barclays unveil French retail banking unit sale.
Opec's surprise decision to cut oil production by 1.2 million barrels per day has boosted the crude oil price.
Oil cartel Opec agrees to first cut in production in eight years as it bids to boost prices.
King Emere Godwin Bebe Okpabi tells High Court 'my people are dying from contaminated water'.
The snails use their shells as clubs to bat off beetles.
NDA vows to bring oil production 'to zero' unless disenfranchisement of poor communities in the Delta ends.
At odds with industry peers, oil giant Shell's finance chief warns crude demand will peak before supply.
Shell sees its performance surge, while profit at BP tumbles by almost half.