Experimental study of permeability reduction and pore size distribution change due to asphaltene deposition during CO₂ huff and puff injection in Eagle Ford shale

Engineering & Materials Science

• Asphaltenes 100%
• Pore size 91%
• Shale 90%
• Adsorption 30%
• Gas injection (Enhanced recovery) 26%
• Core samples 21%
• Enhanced recovery 18%
• Oils 10%

Earth & Environmental Sciences

• asphaltene 91%
• experimental study 62%
• shale 61%
• permeability 53%
• adsorption 17%
• recovery method 16%
• enhanced oil recovery 15%
• gas 13%
• oil 7%
• laboratory 6%
• simulation 5%
• effect 3%

Chemistry

• Pore Size Distribution 79%
• Permeability 62%
• Reduction 35%
• Pore 25%
• Gas 13%
• Adsorption 12%
• Simulation 8%