Wells linked up with the squad on Wednesday after scans revealed the injury sustained by Jeloudev in training wouldn’t heal in time for the weekend.
Qantas Australian Men’s Sevens Head Coach Geraint John said: “It’s a blow for both Greg himself and the team. Sure, it alters the balance of the squad a bit but I am delighted to bring Wellsy into the squad.
“By all reports, he played very well for The Tribe in the International Invitational event in Dubai and he is fit and raring to go. Michael has been working hard in training, has shown a very good attitude since he joined the Sevens program full-time and I’m very confident he can play an important part in the tournament for us.”
The 21-year-old Sydneysider said: “It all came as a bit of a surprise. I got the call in the early hours of Wednesday morning and was on the flight to Port Elizabeth by mid-morning!
“I’m pretty excited to be joining the lads in South Africa – they had a great tournament in Dubai. I think I played ok for The Tribe in Dubai last weekend and managed to get over the line a few times too. I want to bring my confidence to the camp.”
Wells is set to win his second Sevens World Series cap after debuting on the Gold Coast in October. Australia has been drawn alongside Argentina, Portugal and Zimbabwe in Pool B in South Africa.