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1)  petroleum drill collar
石油钻铤
1.
According to joints shape and process characteristic of narrow gap pulse welded of petroleum drill collar,a joint coupon used for ultrasonic diagnostic was designed based on the GB/T15830-1995 standard and the distance-amplitude curve was obtained.
根据石油钻铤窄间隙焊的接头形式及工艺特点,参考GB/T15830-1995标准,设计了钻铤窄间隙焊接头的超声探伤试块,制作了距离-波幅曲线。
2)  Drill collar
钻铤
1.
Research on a new stress relief groove of drill collar threaded connections;
新型石油钻铤联接螺纹减应力区的研究
2.
Measuring residual stress by blind-hole method for the box connection of Ф158.8 mm drill collar;
用盲孔法测量Ф158.8mm钻铤内螺纹端残余应力
3.
Dynamic load analysis of the drill collar during jarring operations by the FEM
震击作用时钻铤上动载荷的有限元分析
3)  drilling collar
钻铤
1.
The study on drilling collar screw-stick,analysis of drilling collar screw thread and test of material and thread parameter have been done.
对钻铤粘螺纹事故进行了调查研究,并进行了宏观形貌和材质分析;对新钻铤材质和螺纹参数进行了检验,并采用不同旋螺纹扭矩对新钻铤试样进行了上卸螺纹试验。
2.
Fractographic and metallographic examination, mechanical testing have been carried out on the failure analysis of the drilling collar.
对钻铤断裂原因进行了断口分析、金相检验和力学性能试验。
4)  slick assembly
光钻铤
5)  drill collar screw
钻铤螺纹
1.
Main reasons of causing drill collar screw failure are discovered by way of further investigation and analysis on these problems.
通过对钻铤螺纹失效问题的深入调查和分析,找出引起钻铤螺纹失效的主要原因。
6)  bottom hole assembly planning
钻铤设计
补充资料:地质和石油钻采用钢管
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性质:这类钢管包括地质钻探和石油钻采用的各种钢管,主要有套管、钻杆、钻铤、油管和接箍等。它们用标志屈服强度的专用钢种生产,可以是无缝管也可是焊接管。根据美国石油学会(API)的标准,套管、油管、钻铤等油井用管钢级的屈服强度在276~1138兆帕之间。套管的规格为φ114.3~508×5.21~16.13毫米,长4.9~14.6米;油管的规格为φ26.7~114.3×2.87~9.52毫米,长6~9.7米。套管和油管用螺纹接箍连接,连接螺纹分短圆螺纹、长圆螺纹、偏梯形螺纹和直接型螺纹。钻杆用的钢管供应5.5~13.7米定尺长度,而端部分内加厚、外加厚、内-外加厚的,车丝(接箍用)和不车丝(对焊用)的。钻杆的断面有圆、四方、六方几种(见图)。钻铤即加重钻杆,是两端带公母的厚壁管(见图),直径88.9~279.4毫米。

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