This requires a complete about-turn in the market strategy it has followed for the past two years.
The Organisation of Petroleum-Exporting Countries (Opec) accounts for only 40 per cent of the world's oil exports, which is marginal for a cartel that seeks to control the world oil price.
Moreover, some poorer Opec members regularly pump more oil than their quotas allow. So Saudi Arabia's traditional role, as Opec's biggest member, was to cut production and get the world price back up when there was a glut of oil on the market.
When the oil price collapsed two years ago, however, Saudi Arabia didn't do that. The regime was worried that the rapid rise in American oil production, mainly due to fracking, would ultimately destroy Opec's ability to set the price of oil.
Its response was to pump oil flat out and let the price stay low, hoping this would drive the high-cost US fracking industry out of business.
That was a foredoomed strategy, because the US government would even subsidise its fracking industry, if it had to, rather than give up on the dream of "energy independence" (self-sufficiency in oil production). In the event, that wasn't necessary: even with the oil price at rock bottom, American oil production actually grew last year -- and by now the Opec producers are facing budgetary disaster.
At the Opec summit in Algiers last Wednesday, Saudi Arabia publicly abandoned its strategy. Opec will cut production by 700,000 barrels a day, starting next month. Saudi Arabia, as usual, will take the biggest share in the cuts -- and if this round of cuts doesn't get the price back up, there will presumably be a further round early in the new year.
A number of things are not yet clear about the new strategy. In particular, how to share the pain of production cuts between the Opec members has not yet been worked out, so the market is not yet persuaded that these cuts are real.
The world oil price jumped 7 per cent on first news of the Opec decision, but is now back down to about the level it was at before the Opec announcement.
Opec's promises about cuts have been broken before. But this time they probably will be kept, because a lot of the producers are truly desperate for a higher price.
So, then, three conclusions. One, Saudi Arabia's ability to set the price of oil, and Opec's power in general, is seriously impaired. Two, the oil price is going back up over the next year or so, though probably not beyond $70 or $80 a barrel. And three, that is really a good thing, because we need a higher oil price to drive the shift out of carbon fuels and into renewables.
�Gwynne Dyer is an independent journalist whose articles are published in 45 countries.