Baker Botts, Locke Lord, and Foley Gardere are handling a massive energy deal involving shale assets in Texas and nearby states valued at $10.8 billion.

On Friday, BHP Billiton, the world’s largest miner, announced it would sell its entire interest in the Eagle Ford, Haynesville, Permian and Fayetteville shales to two companies for a total of  $10.8 billion in cash.