�?�?t ρ l k + �?�?x i ρ l k v l = �?�?x j μ + μ t σ k �?k �?x j + G k �?ρ l ε �?Y M Exceeding fracture tension: Inadequate estimation of formation toughness and slim pore–fracture Home windows frequently cause unintended fracture propagation.  Organic fracture type leakage won't demand a substantial plugging