Oil companies Chevron (NYSE:CVX), Apache Corporation (NYSE:APA), and their partners have finalized long-term agreements to supply Japan's Chubu Electric Power Company with liquefied natural gas extracted from their Wheatstone Project in Western Australia, the companies announced Thursday.

The agreements call upon the Wheatstone partners to supply 1 million metric tons of LNG annually over the next 20 years. This amounts to 11.2% of Wheatstone's projected 8.9 million ton annual production capacity.

If you break out revenues from this supply agreement, 64% should go to Chevron, 13% to Apache, and 6% to Royal Dutch Shell (NYSE:RDS-A), with other partners accounting for the balance, based on their ownership interests in the project. Chevron will benefit most of all from the deal, inasmuch as it owns an 80% interest in the Wheatstone and Iago gas fields that supply 80% of the feedgas converted into LNG at the Wheatstone project.

Chevron shares are flat on the news, while Apache shares are up about 2.4%. Royal Dutch Shell is down 0.7%.

Fool contributor Rich Smith has no position in any stocks mentioned. The Motley Fool owns shares of Apache. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.