Western North Slope

Colville River Unit

The Colville River Unit (CRU) encompasses the Alpine Field and nearby satellite fields. The Alpine Field, located approximately 34 miles west of the Kuparuk Field, is one of the largest conventional onshore oil fields developed in North America. Alpine is a model for future oil developments, as directional drilling and other innovations minimize the environmental footprint. Field installations include one central production facility that separates oil, natural gas and water. All satellite field production is processed through the Alpine facilities.

Greater Mooses Tooth

The Greater Mooses Tooth Unit (GMTU), consisting of the Lookout and Rendevous fields, was formed in 2008, becoming the first unit established entirely within the National Petroleum Reserve, Alaska (NPR-A). In 2017, the company began construction in the unit with two phases, GMT1 and GMT2. GMT1 achieved first production in 2018, and is connected to the Alpine processing facilities by gravel roads and pipelines. GMT2, the North Slope’s westernmost producing field, achieved first oil in 2021.

Bear Tooth Unit

In 2016, ConocoPhillips Alaska drilled two exploration wells in the northeast portion of the NPR-A that resulted in the Willow discovery. Appraisal of the Willow discovery commenced in January 2017 and was completed in 2020. The Department of the Interior issued the Record of Decision (ROD) on the Willow project in March 2023 allowing construction to commence, and ConocoPhillips announced a Final Investment Decision in December 2023. The full development will include three pads, an operations center and camp, and a processing facility. First production is anticipated in 2029. Learn more about the Willow project here.