Exxon is claiming a right of first refusal on Hess' assets in Guyana under an agreement that governs a consortium developing the country's oil resources. Chevron has rejected Exxon's claims that ...

Oil spills also are a concern for oil firms operating offshore, like Hess. Though the probability of a spill is very small, a devastating accident like the BP Macondo disaster in 2010 could have a ...

Guyana’s oil output dropped 11% in the third quarter as Exxon Mobil Corp. temporarily shut down two of its three production vessels to connect a new gas-to-shore pipeline. Hess Corp., which has ...