In the end, New Orleans (11-11) suffered a third straight loss.
Davis was battling under the boards with Utah's Derrick Favors early in the fourth quarter when he went down to the floor and stayed down.
Davis was immediately placed in a wheelchair and taken to the locker room.
Davis (groin) has been ruled out for Saturday's game against Portland, Mike Richman of The Oregonian reports.
His ailment was reported as a groin injury, and Davis was described as doubtful to return.
As it turns out, the injury will hold him out for longer than just part of Friday's game.
Pelicans management have not issued a statement on the fine.
Davis tallied a team-best 19 points and 10 rebounds in his first 32 minutes, before being forced out of the game.
The league announced Friday that Davis will be fined $25,000 for yelling at the official and not leaving the court in a timely manner following the ejection. If he misses any significant amount of time, it would be an bad blow for a New Orleans Pelicans team that is now the seventh seed in the Western Conference.