单牙轮钻头的发展前景研究  

A Bright Prospect in Mono-cone Bit

作　　者：余志清[1] 张进双[1] 

机构地区：[1]西安石油学院,陕西省西安市710065

出　　处：《断块油气田》1998年第6期48-51,共4页Fault-Block Oil & Gas Field

摘　　要：目的：分析单牙轮钻头的优越性，解决目前钻井业面临的问题。方法：研究了单牙轮钻头的侧切削特性、单牙轮钻头和弹塑性地层的相互作用及单牙轮钻头的热应力分布，分析了钻头结构、地层岩石特性及钻井工艺参数等因素对单牙轮钻头性能的影响。结果：指出单牙轮钻头的侧切削能力强，和岩石的接触时间可调范围大，适于在高钻压低转速状态下运行。结论：单牙轮钻头在深井、越深井、老井侧钻和小井眼钻探等方面颇有其优越性，具有广阔的发展前景。present and in the future, the drilling mission will concentrate on deep drilling, ultradeepdrilling, sidetrack drilling and slimhole drilling. The side cutting character of mono-cone bits, the interact betweenthe bit and rock and it's thermal stress distribution are studied in this paper. At the sarne time, this paper alsoanalyzes some factors that influence mono-cone bit pefformance such as bit structure, stratigraphic property anddrilling operation paramters. From the reseaxch result, it is reached that mono-cone bit has more poWerful side-track cutting capacity and longer interact time between the bit and the rock. The mono-cone bit must have awidely prospect in the future because it can be used under low rot8Lry rate and high weight on bit.

关 键 词：牙轮钻头 弹塑性 地层 钻头 钻井 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]