CCUS Compass — Your Workspace
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⚙ Engineering Toolkit
Interactive calculators and reference tools for CCS subsurface engineering
CO₂ Phase & Properties Calculator
CO₂ Phase Boundaries⬡ Triple point: −56.6 °C · 0.518 MPa
⬡ Critical point: 31.1 °C · 7.38 MPa
⬡ Supercritical: T ≥ 31.1 °C AND P ≥ 7.38 MPa
⬡ Critical point: 31.1 °C · 7.38 MPa
⬡ Supercritical: T ≥ 31.1 °C AND P ≥ 7.38 MPa
CO₂ Phase State
Supercritical
✓ Ideal for injection
Liquid-like density, gas-like mobility. Target state for CO₂ storage.
Est. Density
670 kg/m³
±~20% · verify w/ NIST
Conditions
60.0 °C
12.00 MPa
AER Directive 065
Underground injection operations, CO₂ sequestration (Unit 4), induced seismicity (§4.1.8)
AER Directive 051
Injection & disposal wells — Class III for CCS, completion/logging/testing requirements
AER Directive 056
Energy development applications — well/facility/pipeline licences for CCS projects
Alta Reg 68/2011
Carbon Sequestration Tenure — evaluation permits (5yr, 73,728 ha), leases (15yr), MMV plans
MMA §15.1
Crown owns 100% of pore space below surface of all Alberta land
MMA Part 9 §§117-123
Post-closure liability transfer to Crown, Post-Closure Stewardship Fund
TIER Regulation
$95/tCO₂e (2025), rising $15/yr to $170 by 2030. Sequestration Credits, CRTs
CSA Z741:12
Geological storage of CO₂ — bi-national standard, site selection through closure
45Q Geologic Storage
$85/t
Point-source (with PWA)
45Q DAC Storage
$180/t
Direct Air Capture
Alberta TIER 2025
$95/tCO₂e
Rising $15/yr to $170
EPA PISC Minimum
50 years
Post-injection monitoring
Max Injection P
90% Pfrac
EPA Class VI §146.88
State Primacy
6 states
ND, WY, LA, WV, AZ, TX