As of 1 June 2019, ConocoPhillips Alaska has reached total depth on the West Willow 2 outpost well located in National Petroleum Reserve-Alaska (NPR-A) oil & gas lease AA-094413 on the North Slope of Alaska. The well is located 2.5 mi (4 km) to the west of the West Willow 1 discovery well located in NPR-A lease AA-094422. The West Willow 1 well discovered oil in the Cretaceous Nanushuk Formation in early 2018 after reaching a total depth of 3,783 ft (1,153 M). Total depth was reached on 17 April 2019.  ConocoPhillips spud the West Willow 2 on 28 March 2019 using the Doyon Drilling Inc rig 141. The well will have a proposed total depth of around 4,000 ft (1,291 m) and be targeting the Cretaceous Nanushuk Formation.  The 5,750 ac (23.31 sq km) NPR-A lease AA-094413 (Block 991-H-086) was officially awarded on 1 April 2017 to ConocoPhillips Alaska (78%) and partner Anadarko (22%) as a result of the 2016 NPR-A oil & gas lease sale. ConocoPhillips acquired Anadarkoâs 22% working interest in late 2017.
ConocoPhillips Alaska has reached total depth on the West Willow 2 outpost well located in National Petroleum Reserve-Alaska (NPR-A) oil & gas lease AA-094413 on the North Slope of Alaska.