�?�?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 Once the dip angle on the fracture is 0.5, the coincidence diploma of the indoor and industry drilling fluid lost control effectiveness is better and the evaluation final result is healthier We Formerly stated that one o