Chevron deal to buy Hess at risk as Exxon, CNOOC eye Guyana stake

Chevron warned it may not complete its planned buyout of Hess as Exxon Mobil and the China National Offshore Oil Corporation are saying the planned deal would trigger their right to boost their stakes in a Guyana venture. The warning came in a Securities and Exchange Commission filing, which says that both Exxon and CNOOC informed Hess HES, +0.57%and Chevron CVX, -0.14%that the U.S. deal triggers a change-of-control provision allowing them to boost their stakes.Right now, the companies are in ta