Shell's play-opening Graff discovery offshore Namibia is getting bigger and better, with its oil and gas resources now thought to stand at about 2 billion barrels of oil equivalent, according to well-placed sources.

Such is the scale of the envisaged project that the supermajor is now said to be considering deploying at least one floating liquefied natural gas vessel alongside a floating production, storage and offloading vessel.

Upstream broke the news about the Graff find in January, reporting that the wildcat in Block 2913A had hit 300 million barrels of recoverable oil in about 2400 metres of water.