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石家庄煤矿机械有限责任公司与河南煤田地质局合作研制出一种适用于深孔大口径钻井的新型钻进装置——SLF150气举反循环送水器及配套双壁主动钻杆。该装置是将压缩空气沿双壁水龙头、双壁主动钻杆、双壁钻杆的环状间隙从气水混合器处喷入管内,形成一种密度小于液体的气液混合物,通过产生的压差将渣浆以较高的速度带出孔外,排人沉淀池,沉淀后的渣浆再流向孔中,如此循环,利用气举反循环
Shijiazhuang Coal Mine Machinery Co., Ltd. and Henan Coalfield Geological Bureau has developed a new type of drilling device suitable for deep-hole large-diameter drilling - SLF150 gas lift reverse circulation water supply and supporting double-wall active drill pipe. The device is compressed air along the double-wall faucet, double-wall active drill pipe, double-wall drill pipe annular gap injected into the tube from the gas-water mixer to form a density less than liquid gas-liquid mixture, by the pressure Bad to high-speed slurry out of the hole, the row of sedimentation tank, the slurry flow after the precipitation and then flow to the hole, so the cycle, the use of gas lift reverse cycle