SPE Lecture Series, 29 July, 2014
Historical Case of Side-tracking Two Horizontal Wells in the Wandoo Field
The Wandoo oilfield is located 75 kilometres north-west of Dampier, offshore of Western Australia at a water depth of 55 meters; currently the field produces in excess of 6000 b/d of oil average.
In 2013, Vermilion successfully side-tracked the B5 and B9 horizontal wells. The new laterals on both wells fell into the extreme extended reach category. The B9 lateral is the longest horizontal section drilled to-date at Wandoo, with a TVD to unwrapped horizontal step-out ratio of 4.9. Both side-tracks were brought on production at restricted rates in April 2013.
The author will discuss: the preplanning and design process, the execution highs and lows and the lessons learnt for the campaign.