RE:10 billionIt is 10 billion barrels of oil in place, NOT recoverable, they currently estimate 30% recovery, so SEI is 5% of 3 billion barrels at this time. which is around 150 million barrels recoverable to SEI.
That said, with further appraisal drilling it could prove much larger than current estimates, AND it is likely thar recoverables will prove to be nearer 50% with modern extraction applications.