�?�?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 paper will go over the subsequent key subject areas: Deep well drilling technologies are of crucial value from the drilling market. In this method, the drilling fluid (drilling mud) is applied to take care of force equilibrium,