An arbitration panel that will decide a high-profile clash between Exxon Mobil and Chevron will delve into the secret value of Hess' oil riches in Guyana, people familiar with the matter said.Chevron last October offered to pay $53 billion for Hess…<p><p>https://www.marinelink.com/news/hess-guyanas-value-central-exxon-mobile-516136</p></p>