Drilling of the two wells one a re-entry of the Woollybutt-4 well and the other the Woollybutt-6 appraisal well is expected to begin in mid-2007 with first oil due in early 2008.
The Woollybutt-4 well should increase the field's production rates by about 10,000 barrels of oil per day, and increase field life, said partner Tap Oil.
The contract for the leased Four Vanguard FPSO runs until 2009 with optional extensions until 2013.
