Hess Wins Guyana Arbitration, Clearing Path for Chevron Deal / Latest / By mark Hess prevailed in international arbitration against Exxon Mobil, clearing a path to close its $53 billion sale to Chevron. The international case focused on Hess’ ownership stake in Guyana’s Stabroek field. Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Related