COMPARATIVE EVALUATION OF VERTICAL AND HORIZONTAL DRAINAGE WELLS FOR THE DEGASIFICATION OF COAL SEAMS.

Keyphrases

• Degasification 100%
• Coal Seam 100%
• Horizontal Drainage 100%
• Vertical Drainage 100%
• Drainage Wells 100%
• Vertical Well 66%
• Effective Porosity 33%
• Hydraulic Fracture 33%
• Horizontal Well 33%
• Cleat 33%
• Well Drilling 33%
• Single Well 33%
• Multiple Fractures 33%
• Effective Permeability 33%
• Numerical Simulator 33%
• Natural Fracture Network 33%
• Induced Fracture 33%
• Post-fracture Performance 33%
• Dual-porosity Reservoir 33%

Engineering

• Coal Seam 100%
• Simulators 66%
• Porosity 33%
• Hydraulics 33%
• Horizontal Wells 33%
• Natural Fracture 33%
• Fracture Network 33%
• Reservoir Porosity 33%

Earth and Planetary Sciences

• Coal Seam 100%
• Porosity 33%
• Hydraulic Fracturing 33%
• Fracture Network 33%
• Dual Porosity 33%
• Reservoir Porosity 33%