BP : Crews position transition spool to prepare for new connection . NEW : New drilling vessel expected to begin siphoning oil Sunday evening . BP : Oil replacement is proceeding as planned . Old containment cap removed from Gulf well . Switch will take another 3 to 6 days , during which oil will flow unimpeded .
NEW : Crews position transition spool to prepare for new connection . NEW : New recovery vessel expected to begin siphoning oil Sunday evening . BP : Cap replacement is proceeding as planned . Old containment cap removed from Gulf well . Switch will take another 3 to 6 days , during which oil will flow unimpeded .