This was part of a dedicated afternoon session at the 30th Annual CO2 Conference held in December 24. The position has been that the large volumes of produced water disposal are the best analogs for large volume CCS (CO2 injection without fluid removal / reservoir mass balancing). They are in Oklahoma, West Texas and other horizontal well development where disposal wells are present and high volume. The lessons learned are quite valuable.
You can find more related info on the session at https://co2conference.net