1) mule foot a bit
钻头偏磨
2) caving and eccentrically worn drill pipe
钻具偏磨
1.
During the operation several downhole complications took place, such as collar break, cone break off, drill pipe sticking, lost circulation, caving and eccentrically worn drill pipe.
该井在施工中发生了断钻铤、掉牙轮、卡钻事故和井漏、井壁失稳、钻具偏磨等复杂情况。
3) drill wear
钻头磨损
1.
In the drilling process, the power spectrum of a drilling force is closely related to the drill wear.
在钻削过程中,钻削力功率谱与钻头磨损之间具有较强的相关性,被广泛用于钻头磨损监测,但是关于功率谱特征的提取和识别一直没有很好解决。
2.
In this paper,the cutting force signals in different drill wear conditions are decomposed and reconstructed using wavelet transform; and the changing characteristics of cutting force signals of time domains in different frequency bands are obtained.
采用小波分析对钻头不同磨损状态的切削力信号进行分解与重构处理 ,获得了切削力信号在不同频段的时域变化特征 ,并分析了各个频段重构信号的方差随钻头磨损的变化规律。
补充资料：绝对可磨度(见矿石可磨度)
绝对可磨度(见矿石可磨度)
absolute grindability
Juedu一kemodu--一’一一一z，1」一二一」_L:1;十、、口犷绝对可磨度(absolute gr‘ndab‘l‘ty，兄刁石可磨度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条