When the control valve at the end of center pipe was widely open, the pipefailure was mainly caused by high-temperature oxidation.
当中心管末端调节阀开大时,中心管损坏原因主要为高温氧化;
2
Through the deep investigation and analysis of the drilling pipefailure, the main factors causing drilling pipefailure are found out.
通过对钻杆失效问题的深入调查和分析,找出引起钻杆失效的主要原因。
3
The drill pipefailure assessment demonstrates the longitudinal brittle fracture will be avoided when the transverse impact power of the material is over 80J.