钻杆接头的各种纵向开裂属于低应力脆性断裂。
Longitudinal crack of drill pipe box joint is brittle fracture at low stress.
给大钳装上与钻杆接头或钻铤相匹配的钳头，再装上安全锁簧。
Fit the rig tongs with the correct jaws for the drill pipe tool joint or the drill collar. Re-install the safety lock springs.
本文对国产的和从西德、法国和巴西进口的钻杆接头作了解剖分析。
The mechanical and metallurgical properties of tool joints made in West Germany, France, Brazil and China are thoroughly studied.
将各组探头安装在探头架上，对带有人工缺陷的钻杆接头进行了检测。
The special combined probe arrays inspecting the axial and circumferential defects were designed and were installed on a special stand.
结果表明，碳化物分布不均匀导致调质处理后在钻杆接头中产生“带状组织”。
The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and hightemperature tempered.
结果表明，碳化物分布不均匀导致调质处理后在钻杆接头中产生“带状组织”。
The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and high temperature tempered.
我公司可按用户的要求提供各种型号的钻杆接头。各项力学性能均完全超过API标准要求。
We can provide various types of drill pipe joints as customer's demand. All mechanical properties are beyond API standard.
在拧卸钻杆时为了保护动力头钻杆接头，防止其磨损，通常的做法是在该接头处联接一个保护接头。
A protecting joint is added at power head rod joint in order to prevent power head rod joint abrasion when rod is screwed or unscrewed.
论文从实际的工程项目出发，逐一解决了接头检测存在的难点，最终实现了钻杆接头的自动、高效检测。
Based on the applied project, problems of the oil drill tube joint detection are solved step by step. Finally, automatic and effective joint measurement method is realized.
分析了钻杆接头对水平井段钻柱屈曲临界力和弯曲应力的影响，提出了计算钻柱正弦屈曲临界力的新方法。
The effects of the connectors on the critical buckling load and the bending stress of pipes in horizontal section are analyzed.
为了进一步提高接头的密封能力，设计了一种斜面台肩结构来改善钻杆接头的密封性能，与api结构相比有效的提高了密封性能。
A structure of incline plane shoulder has been designed to improve the sealing performance of the joint and it improved the sealing ability effectively compared with the API joint.
使用AISI 4145 H合金钢制造。方钻杆的末端和驱动截面和接头都符合API规范。
Kellies are made of AISI4145H alloy steel. The ends, driving sections and joints are produced and tested according to API specification.
它是个上端为钻杆母扣或者由壬，下端为套管公扣，内空心的转换接头。
Its upper end is drill pipe box or union, the nether end is casing pin. It is a crossover with hollow inside.
近年来由于深井、定向井等逐渐增多，油气井钻井中钻杆内螺纹接头纵向开裂失效成为常发事故。
Due to the increasing number of deep Wells and directional Wells being drilled, longitudinal fracture occurred on the box-ended drill pipe tool joint is often reported.
应用钻杆失效评估技术研究表明，横向材料冲击功大于80J将避免钻杆内螺纹接头纵向脆性开裂失效。
The drill pipe failure assessment demonstrates the longitudinal brittle fracture will be avoided when the transverse impact power of the material is over 80J.
在计算钻柱强度时，应考虑接头对钻杆弯曲应力的影响，以实现安全钻井。
The effect of tool joint must be considered in analysis of drillstring strength to reduce drillstring failure and keep safety in drilling process.
虽然裂纹源很难避免，但如果能够阻止裂纹的扩展，也能够防止钻杆内螺纹接头纵向开裂失效。
Although it is hard to avoid the sources of fracture, the longitudinal fracture failure on the box joint can be prevented if proper measures are taken to prevent further extension of the fracture.
水井钻杆为外加厚内平式，接头按照石油钻具尺寸加工，也可按照用户要求加工。
Water well drill rod for eue in even -like, attaches according to the petroleum drilling tool size processing, also may defer to the user request processing.
本实用新型涉及钻杆或导管接头的探伤检验组合输送装置，尤其涉及曲线式探伤检验组合输送装置。
The utility model relates to a combined flaw detection transporting device for a drill stem or a pipe joint, particularly a curved combined flaw detection transporting device.
结果表明，采用TLP连接技术进行钻杆焊接，接头成形好，接头组织与母材相似并连续生长，接头强度、塑性均达到母材水平。
The results show that TLP bonding produces a good joint with microstructure and strengths similar to those of base metal.
重点对其关键技术即接头处导线连接方式和管壁中导线的绝缘、密封可靠性进行分析研究，提出了开发有线钻杆传输系统的思路和建议。
Especially, the key techniques, i. e. lead connection at connector, lead insulation on pipe wall, and sealing reliability are analyzed and studied, and also the t...
重点对其关键技术即接头处导线连接方式和管壁中导线的绝缘、密封可靠性进行分析研究，提出了开发有线钻杆传输系统的思路和建议。
Especially, the key techniques, i. e. lead connection at connector, lead insulation on pipe wall, and sealing reliability are analyzed and studied, and also the t...
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