Thomas Mason, senior vice president, general counsel and secretary of Energy Transfer Partners (ETP), turned to Vinson & Elkins for the Dallas energy company’s pending acquisition of Susser Holdings Corp. in a unit and cash transaction valued at $1.8 billion.

Chip Bonner, executive vice president and general counsel of Corpus Christi–based Susser, is using a team from Gibson, Dunn & Crutcher.