NEW ORLEANS (AP) — Two major petroleum companies have evacuated offshore operations in the southwestern Gulf of Mexico with the approach of Tropical Storm Don.

The storm is expected to make landfall Friday in southeastern Texas.

Royal Dutch Shell said it planned to have 195 workers evacuated from its Perdido Spar deepwater development by the end of Thursday. The company said it has shut down production, but did not provide figures on how much would be closed off.

ExxonMobil said it is evacuating an undisclosed number of non-essential workers from its offshore operations in the region. ExxonMobil said its production shutdown would total about 8,000 barrels of oil per day, along with 50 million cubic feet of natural gas per day.