气动潜孔锤钻进中的新型防卡钻具

A New Tool of Preventing Drill Pipe Sticking in Air-powered DTH Drilling

针对气动潜孔锤钻进复杂地层深孔存在一些困难,研制出一种新型防卡钻具,它既能解决卡钻问题,又能使排渣顺畅。应用该钻具可以降低成本,节约工期。

There are some troubles in air-powered DTH drilling complicated layer. This paper presents a new tool of preventing drill pipe sticking. It is able to resolve the problem of drill pipe sticking, also resolve the problem of discharging detritus. Using this new tool can reduce cost and save time.