Chevron Canada said it has started drilling Canada's deepest offshore oil well, located in the North Atlantic.
The Stena Carron drill ship is sinking the well, known as Lona 0-55, to a water depth at 2,600m, which will establish a new record in Canada.
The drilling is situated in the largely unexplored Orphan Basin, which covers an area of 62,140 square miles and will take several months to complete.
The well is 1km deeper than the Macondo well that was being drilled by the Deepwater Horizon rig before it ruptured and sank in the Gulf of Mexico, gushing an estimated 210,000 gallons of crude per day.
In the wake of the Macondo oil rig explosion, Chevron said the primary focus is on ensuring safe and incident-free operations during drilling.
Chevron Canada has two drill ships that can drill relief wells for the Lona 0-55 prospect, which could slow spills by relieving pressure if the well suffers a blow-out.
Chevron Canada holds a 50% stake in the venture while the rest is owned by Shell Canada Energy, ExxonMobil Canada and Imperial Oil Resources Ventures.