BP's 48-hour window for pressure testing the recently recapped Gulf well passed Saturday with no reports so far of leaking oil.
Despite no evidence that a giant sealing cap had caused further damage, the company said that pressure tests could continue beyond the 48 hours, which ended at 3:25 p.m. ET.
It was unclear Saturday afternoon when officials might allow oil to again flow to vessels.
Pressure was still rising Saturday though it had slowed considerably as expected, BP Senior Vice President Kent Wells said earlier in the day.
"The longer the test goes the more confidence we have in it," he told reporters in a conference call Saturday. "There's no evidence we don't have integrity."