1) excentricity of drilling pipe
钻具偏心度
2) eccentric drill tool
偏心钻具
3) DTH hammer drilling with eccentric simultaneous casing
偏心跟管钻具
1.
This paper introduced a new type DTH hammer drilling with eccentric simultaneous casing about the structure composition and the design idea.
介绍了新型偏心跟管钻具的结构组成以及设计思路。
4) tumbler deviation-controlled drilling tool
不倒翁式偏心防斜钻具
5) unbalanced assembly
偏轴钻具
1.
Correlation study on drilling weight on bit (WOB) fluctuation rules of pendulum assembly and unbalanced assembly was carried out by using simulation device for bottom hole assembly (BHA).
利用底部钻柱动力学研究试验装置对钟摆钻具与偏轴钻具的钻压波动规律进行了对比研究。
6) 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。
补充资料：在AutoCAD中偏心圆锥与偏心圆台实体的画法
现在要画一个偏心圆锥,底面在WCS的XY平面上,圆心(0,0,0),半径100,顶点(300,0,400)在ZX平面上.
1)连接PA,PB. A(-100,0,0) B(100,0,0)
图1
在当前坐标下:
2)延长PA到C,使PA=CA;延长PB到D,使PB=DB;
3)连接CD;
4)以CD为直径画圆;
5)用XLINE命令中的二等分选项作角CPD的角平分线PO,交CD于O;
6)过O作CD的垂线,交圆于E,F;
图2
7)用三点UCS命令,取三点为:O,P,C;
8)过点O作PO的垂线GO,交PC于G;
图3
9)再次用三点UCS命令,取三点为O,F,G;
10)现在就可以画椭圆锥了!
cone-e-c-捕捉O点-捕捉F点-捕捉G点-a-捕捉P点;
图4
11)回到WCS,剖切椭圆锥
SL-选择椭圆锥-回车-XY-回车-捕捉P点.
12)删除辅助线条.
图5
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