�?�?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 Neglecting formation actions: Overlooking strain variations in tectonically Lively locations or overlooking weak formations when selecting mud https://vertechs.mystrikingly.com/blog/the-unseen-engine-how-advanced-drilling-fluids-and-smart-additives