Skadden, Arps, Slate, Meagher & Flom has advised Chinese state-owned oil giant Sinopec Group on a $5 billion bond issue.

The company, through a subsidiary, is selling five tranches of dollar-denominated bonds at varying interest rates and maturity dates: $1.25 billion in three-year 1.75 percent notes, $750 million in five-year 2.75 percent notes, $1 billion in 10-year 4.375 percent notes, $1.5 billion in three-year floating-rate notes and $500 million in five-year floating-rate notes.