�?�?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 lower in annular return move will induce the circulation speed of drilling fluid in the annulus https://studio-directory.com/listings13594895/the-best-side-of-drilling-fluid-loss