清水气举反循环钻探工艺在深水井施工中的应用

清水气举反循环钻探工艺是解决含水层裂隙在钻探过程中被堵塞问题的一种有效方法，尤其是对层压较低、裂隙稀少的含少层段，含水裂隙一旦发生堵塞则不易清洗干净，严重影响水井出水量，甚至造成水井报废。该方法的引入，对提高北京地热井水量有积极作用。

Applications of Clear Water-gas-lift Reverse Circulation Drilling Technology to Deep-well Construction

Clear Water gas lift Reverse Circulation Drilling Technology is a effective methad to resolve the problem of jamming watery yielding opening during the drilling Especially for water bearing zone with lower stratal pressure and less crack, once watery yielding crack being jammed, it will be difficult to clean, and it effects greatly well capacity, even make the well useless Intrduction of this methad has active effect on advancing capacity of geothermic well in Beijing area