�?�?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 If the quantity of fluid during the wellbore drops due to lost circulation (or almost every other rationale), hydrostatic strain is lowered, which might let a gasoline or fluid which is below a higher force in comparison to