摘要
本文通过正交试验方法研究了复合片镶焊角度、钻压、钻头转速、冲洗液量对机械钻速的影响问题。查明了镶焊角度对钻进速度影响最大。最优镶焊角度随所钻岩石性质的不同而异,并与破碎单位体积岩石所消耗的功最小相应,建议以单位体积岩石破碎功最小为原则来确定复合片最优镶焊角度和钻进规程参数的最优组合。
In this paper influence of PDC rake angle , bit pressure ,rotary speed and water flow rate on penetration rate is considered with experimental data obtained . The experiment is done using orthogonal method . It is demonstrated that the rake angle has the most influence among the parameters discussed . Optimal rake angles are different depending upon rocks drilled . For example ,the angle is 20?for marble and 10?for granite .Optimal rake angles cor-respond to minimum specific energy for rock fragmentation . It is recommended to define the PDC rake angle and operating parameters according to the minimum specific energy .
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第4期451-459,共9页
Earth Science-Journal of China University of Geosciences
关键词
复合片
钻头
钻进
正交试验
orthogonal experiment, rake penetration rate, rotary speed, operating parameter , specific energy .
