US oil giant Chevron, the lead partner in the $43 billion Gorgon gas project at Barrow Island, will spend $7.5 billion developing one of the world's deepest oil reservoirs off the Louisiana coast.

US oil giant Chevron, the lead partner in the $43 billion Gorgon gas project at Barrow Island, will spend $7.5 billion developing one of the world's deepest oil reservoirs off the Louisiana coast.