CALGARY - Tamarack Valley Energy Ltd. is buying Deltastream Energy Corp. for $1.425 billion, a move that the privately held Tamarack says solidifies its position as the largest producer in northern Alberta's Clearwater heavy oil play.
TORONTO - Shawcor Ltd. says it is changing its name to Mattr and launching a review of strategic alternatives for its pipeline performance group, Shaw pipeline services and oilfield asset management operating units.