Kuparuk River Unit (West Sak) is a producing heavy oil field located onshore the US and is operated by ConocoPhillips Alaska. According to GlobalData, who tracks more than 34,000 active and developing oil and gas fields worldwide, the field is located in block ADL 25661, ADL 25636, ADL 25651, ADL 25662, ADL 25639, ADL 25660, ADL 25650, ADL 28242, ADL 25648, ADL 25649, ADL 25637, ADL 25663, ADL 25638, ADL 28243, ADL 380058, ADL 385172, and ADL 28248. Buy the profile here.

Field participation details

The field is owned by Chevron, ConocoPhillips and Exxon Mobil.

Production from Kuparuk River Unit (West Sak)

The Kuparuk River Unit (West Sak) heavy oil field recovered 59.03% of its total recoverable reserves, with peak production in 2018. The peak production was approximately 22.67 thousand bpd of crude oil and condensate. Based on economic assumptions, production will continue until the field reaches its economic limit in 2054.

Remaining recoverable reserves

The field is expected to recover 61.49 Mmboe, comprised of 61.49 Mmbbl of crude oil & condensate. Kuparuk River Unit (West Sak) heavy oil field reserves accounts 0.14% of total remaining reserves of producing heavy oil fields globally.

For more details on the Kuparuk River Unit (West Sak) Heavy Oil Field, buy the profile here.


GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Oil & Gas Intelligence Center, which provides detailed profiles of 34,000+ oil and gas fields, 400,000+ exploration blocks, 1,100+ LNG terminals, 3,400+ gas processing plants, 5,000+ storage terminals, and 8,000+ pipelines, 1,400+ refineries and 13,000+ petrochemical plants worldwide.