摘要
近几年，大庆、胜利等国内十几家油田大面积推广使用加长喷嘴钻头情况表明，长喷嘴钻头机械钻速提高２０～３５％，进尺提高１５～２０％。文中总结了近几年来长喷嘴钻头的现场使用情况和使用经验，对长喷嘴钻头井底水力特性进行了简要分析，并针对长喷嘴钻头在现场使用中出现的一些问题提出了几点建议。
In recent years,the results of the wide use of extended-jet-nozzle bits in Daqing, Shengli Oilfields etc.in China show the bits increase ROP by 20%～35%, footage by 15%～20%.The paper concludes the field operations and experiences of the bits in recent years,and analyses brieny the downhole hydraulic characters of the bits, and puts forward some suggestions according to the field operations.
出处
《石油钻探技术》
北大核心
1995年第3期46-48,61-62,共5页
Petroleum Drilling Techniques
关键词
加长喷嘴
牙轮钻头
使用
钻头设计
extended jet nozzle
rock bit
usage of bit design
