The Orioles recalled Wells from Triple-A Norfolk on Tuesday.
Wells will provide some reinforcement to the Orioles' bullpen after the team needed five relievers to cover eight innings in Sunday's 7-6 loss to the Angels when starter Chris Ellis (shoulder) failed to record an out. Ellis was placed on the 10-day injured list to open up a spot for Wells, who could be a candidate to replace the former in the rotation if he isn't needed in relief over the next few days.