Inside blowout preventer:
Any valve installed in the drill stem to prevent a blowout through the stem.Mud can be pumped in but flow back up the stem is prevented.
Also called an internal blowout preventer.
Inside blowout preventer:
Any valve installed in the drill stem to prevent a blowout through the stem.Mud can be pumped in but flow back up the stem is prevented.
Also called an internal blowout preventer.