Analytical criterion predicts intersection behavior of fractures and structural planes in reservoirs, indicating critical parameters for fracturing design.
Key Points
To establish an analytical criterion for predicting interactions between hydraulic fractures and structural planes during repeated intersections.
Developed an LEFM-based analytical criterion for HF-SP interactions.
Conducted sensitivity analysis to identify geological and fracturing control factors.
Validated the criterion against analytical solutions, lab experiments, and numerical simulations.
Identified tensile strength, cohesion, and friction coefficient as key factors in toughness-dominated regimes.
Showed that increased injection rate and fluid viscosity can reduce the critical crossing angle significantly.