A solids-free liquid used to control a well should downhole hardware fail and to help place certain completion-related equipment, such as gravel packs, without damaging the producing formation.

• 一种无固相流体用于一旦井下完井硬件失效后控制井眼，以及有助于安放某些与完井相关的设备，诸如砾石充填物，而不会损害产层。