Hydraulic Fracturing
Training Course
Hydraulic Fracturing
Basic Rock Mechanics as Applied to Fracturing
- Stress, deformation, pore pressure, effective stress
- Rock stiffness, tensile and shear strength
- Tensile tests, UCS, triaxial testing
- Strength profiling
- Rock stiffness and strength from sonic logs
In-situ Stress
- In-situ stress regimes
- Overburden stress
- Min and max horizontal stress
- Reservoir pressure gradient
In-situ Stress Assessment
- Easton’s equation
- Minifrac (DFIT) test
Min stress from G-function method
Pressure derivative and square root method
- Natural fracture network complexity from DFIT data
- After closure analysis
Flow regime diagnostic
Permeability estimation
Reservoir pressure
Leak-off coefficient
Post-frac Productivity
- Variables affecting post-frac productivity
- Dimensionless fracture conductivity
- Fold of increase
- Transient flow
- Effect of natural fractures
Fracture Geometry
- Fracture initiation and formation breakdown
- Fracture orientation
- Fracture length, height, area, confinement
- Fracture width and net pressure from PKN and GDK methods
- Radial fracture
- Fracture tip effects
- Thermal effects on fracturing pressure
- Fracture design variables
Perforation Design for Hydraulic Fracturing
- Perf diameter
- Perf density
- Phasing
Geomechanics of Multi-stage Fracturing in Horizontal Wells
- Fracture interference
- Proppant stress
- Stress shadow
- Natural fracture interaction with tensile fracture
- Rock fracability
Proppant Selection
- Proppant types
- Size and concentration (PPG and lb/sqft)
- Proppant conductivity testing