�?�?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 The pure fractures encountered in the actual drilling approach will not be parallel fractures with a uniform width along the length with the fracture. During the loss procedure, in the event the fluid pressure in the fracture is gre