Crude mathematics

A plunging oil price means cheaper petrol now


If oil prices remain well below a certain critical level for any significant period of time, large amounts of investment in expected oil production capacity will simply be written off, and the consequence could then be a recovery-stopping supply-side crunch within little more than two years.

That critical level is widely reckoned within the oil industry to be $90 a barrel. A current price as low as half that critical level is already forcing many companies to drop oil projects, and the banking crisis is also squeezing project financing for foreign oil companies operating in OPEC and outside.

Guardian