Among drawings by less well known artists is an oil on paper by Louis Jean-Jacques Durameau which captures the hard and heavy labour of workers in a paper mill.

ECONOMIST: A collection that��s well worth a visit

Apart from energy, the sectors that will suffer include paper, oil-refining, cement, steel and foundries.

ECONOMIST: Industry is unduly upset at tough new limits on emissions

The year-old paper said the volatility in projecting North Sea oil revenues created financial uncertainty and, although an oil fund - which the Scottish government has said it wants to set up after independence - could increase stability, it might mean spending cuts.

BBC: Buzzard oil platform

Much of the legal framework already exists on paper to allow more private investment into the state-dominated oil industry.

ECONOMIST: Ecuador

It can then be turned into plantations growing palm oil, rubber and fast-growing trees for the booming pulp-and-paper industry.

ECONOMIST: When the smoke clears in Asia

Among contenders for the top spot offshore is OIL, which has benefited from an Asian fondness for companies from the British Virgin Islands (on paper the second-largest investor in China in 2010, after Hong Kong).

ECONOMIST: Company formation