Edmonton is tied in points with the Anaheim Ducks, who has one game in hand.
Adam Henrique, Matt Savoie and Vasily Podkolzin scored, Tristan Jarry made 17 saves for the Oilers (39-28-9). Connor McDavid had an assist to extend his point streak to six games.
Nick Lardis scored for the Blackhawks (27-35-14), who have lost five in a row and were eliminated from playoff contention. Spencer Knight made 31 saves but was briefly removed from the game at 3:18 of the second period to deal with an equipment issue. He was replaced by Arvid Soderblom, who allowed one goal on five shots before Knight returned at 8:15 of the period.
After a scoreless first period, Henrique put the Oilers ahead 1-0 at 5:32 of the second. Darnell Nurse knocked the puck away from Blackhawks forward Andre Burakovsky in the neutral zone and Jack Roslovic came up with the loose puck before sending Henrique in on a breakaway. Henrique deked in and sent an initial backhand off Soderblom's left pad, before raising the rebound up and over it.
Savoie tallied his 15th goal of the season to make it 2-0 on the power play at 12:13. He took a pass from McDavid to the side of the net before sending it through the crease and in off the skate of Blackhawks defenseman Alex Vlasic.
Savoie appeared to push the lead to 3-0 at 17:34, taking a crossing pass on the rush from McDavid and beating Knight glove side. But a video review on a coach’s challenge by Chicago determined the play was offside.
Lardis made it 2-1 at 5:06 of the third period, picking up the rebound off a slap shot from the point by Connor Bedard. Lardis' snap shot went off Jarry’s pad and bounced in off of the skate of Oilers defenseman Connor Murphy.
Podkolzin scored into an empty net at 18:59 for the 3-1 final.
