泡沫和雾状空气钻进通常与空气/天然气钻进一道使用。当钻进含水层或者用空气/天然气钻进处理水量很大的地层时,就应当使用泡沫或雾状空气钻进。泡沫和雾状空气钻进需要同时把空气/天然气、水和发泡剂注入井口管并滑钻杆而下至钻头。泡沫或雾状空气从钻头喷咀流出,沿着钻杆柱和井眼之间的环状空间携带岩屑和液体颗粒流至地表。 Foam and misty air drilling are commonly used with air / gas drilling. When drilling into aquifers or using air / gas to process large volumes of water, foam or misty air should be used to drill. Foam and misty air drilling requires simultaneous injection of air / gas, water and foaming agent into the well head pipe and sliding the drill pipe down to the drill bit. Foam or misty air flows from the drill nozzle and carries debris and liquid particles along the annulus between the drill string and the wellbore to the surface.