�?�?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 amount of fluid inside the wellbore drops on account of lost circulation (or every other reason), hydrostatic tension is diminished, which might permit a fuel or fluid that's under a greater tension when compared to