�?�?t ε l ρ l v l + �?�?ε l ρ l v l v l = ε l �?�?τ l + ε l ρ l g �?ε l �?p �?β v l �?v s Neglecting formation actions: Overlooking worry versions in tectonically Lively regions or overlooking weak formations when deciding on mud Attributes.  Experimental effects of fracture modules with different dip angles