Licensed compositional reservoir simulator used to model CO2 injection, trapping, plume behaviour, THMC effects and storage integrity. Named on CMG CCS page as the CCS simulator; also the core reservoir-simulation product. Sold as term/annuity software licenses plus maintenance. Electronically delivered. No CBSA 6-digit goods class for the license itself (Chapter 85 heading 8523 is recorded media, not a download license).