Evolution of coal permeability to gaseous CO₂ and supercritical CO₂, N₂ and He under in-situ stresses

Earth & Environmental Sciences

• in situ stress 100%
• helium 94%
• permeability 59%
• coal 58%
• phase transition 18%
• coalbed methane 10%
• fluid 10%
• swelling 8%
• pore pressure 8%
• carbon sequestration 8%
• mechanical property 7%
• sorption 7%
• experimental study 7%
• shale 6%
• temperature 6%
• liquid 5%
• nitrogen 5%

Physics & Astronomy

• coal 94%
• permeability 77%
• helium 69%
• critical point 23%
• shales 12%
• fluids 10%
• sorption 9%
• curves 9%
• transit 9%
• swelling 9%
• methane 8%
• recovery 7%
• nitrogen 6%
• injection 6%
• porosity 6%
• mechanical properties 5%
• carbon 5%
• temperature 5%
• liquids 4%

Chemical Compounds

• Coal 84%
• Permeability 70%
• Pressure 15%
• Methane 6%
• Pore 5%
• Nitrogen 5%
• Liquid 4%
• Carbon Atom 4%
• Reduction 4%
• Time 3%