BP 2010 Annual Report Download - page 238

Supplementaryinformationonoilandnaturalgas(unaudited)
Supplementaryinformationonoilandnaturalgas(unaudited)continued
Movements in estimated net proved reserves continued
millionbarrels
Bitumena   2010
     Rest of
     North
     America Total
Equity-accountedentities(BPshare)
At1January2010
 Developed         ––
 Undeveloped         ––
  ––
Changesattributableto
 Revisionsofpreviousestimates         ––
 Improvedrecovery         ––
 Purchasesofreserves-in-place         – –
 Discoveriesandextensions         179179
 Production         ––
 Salesofreserves-in-place         ––
 179179
At31December2010
 Developed         ––
 Undeveloped         179179
 179179

a
Provedreservesexcluderoyaltiesduetoothers,whetherpayableincashorinkind,wheretheroyaltyownerhasadirectinterestintheunderlyingproductionandtheoptionandabilitytomakeliftingand
salesarrangementsindependently.
236BPAnnualReportandForm20-F2010