They may need much more patience than they reckon, however, because those hedges are a moving target. Rather than wait for their price insurance to run out, many companies are racing to revamp their policies, cashing in well-placed hedges to increase the number of future barrels hedged, according to industry consultants, bankers and analysts familiar with the deals.

OPEC officials hope that once U.S. oil companies get fully exposed to the impact of an over 50 percent slide in crude prices since last June, they will have to drill fewer new wells, causing U.S. production growth to stall and putting a floor under oil prices now testing $50 a barrel.