Peru · EnergyKey Facts Reported exit Chevron is said to be weighing withdrawal from offshore blocks Z-61, Z-62, and Z-63, per El Comercio, but has not publicly confirmed. Chevron is said to be weighing withdrawal from offshore blocks Z-61, Z-62, and Z-63, per El Comercio, but has not publicly confirmed. If you’re living in Latin America, Chevron’s Peru exit is a signal worth reading carefully. The U.S. oil giant is said to be considering dropping its stake in offshore blocks Z-61, Z-62, and Z-63. If Chevron’s Peru exit becomes official, it won’t be a surprise.