CEO Mike Wirth recently spoke with Trump administration officials about Ukraine's attacks on tankers in the Black Sea, seeking to protect Chevron's massive operations in Kazakhstan from becoming collateral damage in the Russia-Ukraine war.

A Ukrainian drone attack hit four tankers, including one chartered by Chevron, near Novorossiysk. The Russian port is a key oil export hub and the termination point for a pipeline, partly owned by Chevron, that feeds 2% of the world's daily oil supplies.

Crude loadings have since been restricted at the pipeline, forcing Kazakhstan to curb oil production because it has limited storage capacity. Chevron has a 50% stake in a giant oil-and-gas field in the region and has a lot at stake.

Following discussions with industry leaders, the Trump administration warned Ukraine against attacking non-Russian vessels in the Black Sea, according to a U.S. official.