摘要
以自主研发的219.1/168.3 mm大口径气举反循环钻具生产试验获得的基础数据,对影响气举反循环钻进效率的各种因素进行了初步分析,得出了钻速与沉没比和风量有一定相关性,与风压关系不大的结论。
Ф219.1/168.3mm large diameter reverse circulation drilling tool is independently developed by Coalfield Geolo-gy Bureau of Henan Province, which has been successfully applied to large diameter engineering well with good results.In this paper, the preliminary analysis is made on various factors affecting air-lift reverse circulation drilling efficiency based on the basic production test data, it is concluded that the drilling rate has certain relevance to sinking ratio and air volume, but with little relationship to air pressure.
出处
《探矿工程（岩土钻掘工程）》
2014年第5期42-45,49,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
大口径工程井
气举反循环
风压
风量
沉没比
钻速
large diameter engineering well
air-lift reverse circulation
air pressure
air volume
submergence ratio
drilling rate
