Canada's Enbridge to buy Tallgrass crude oil business for $2.55 billion ↧ ↧ Canada's Enbridge to buy Tallgrass crude oil business for $2.55 bil... Enbridge said on Wednesday it will acquire Blackstone -owned Tallgrass Energy's crude oil business for $2.55 billion in ​cash, expanding its U.S. liquids pipeline network by buying a majority ‌stake in the Pony Express Pipeline and other assets.