When underbalanced drilling or drilling easy leaky zone by using aeration fluid,the determination of fluid density and downhole fluid column pressure is very important.是什么意思_When underbalanced drilling or drilling easy leaky zone by using aeration fluid,the determination of fluid density and downhole fluid column pressure is very important.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句