�?�?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 implications of lost circulation is often as tiny because the loss of some pounds of drilling fluid, or as disastrous as being a blowout and loss of existence, so close monitoring of tanks, pits, and stream within the effectivel