[thackney]

current technology will allow the industry to recover about 3.5% of its oil estimate, or about 32 billion barrels of oil...

an improvement in the recovery factor to 5% means the industry could eventually extract as many as 45 billion barrels of oil

BTTT

[RayChuang88]

And we haven't even begun to do oil recovery in the Marcellus Shale in the northeastern USA. That could be several tens of billions of barrels of oil that too could be extracted from improved fracking techniques.

In short, OPEC will find out in the next 25 years what happens when Russia, USA and Canada become the world's biggest oil and natural gas producers. The free ride the Sunni Arabs got from all the all production in the southern Persian Gulf could soon be over.