Full-scale fatigue test of drill pipe and borehole tests of drill pipes containing defects prove the reliability of assessment methods and software posed in this paper.
通过钻杆全尺寸疲劳试验和含有缺陷钻杆的井下试验，证明了本文提出的评价方法和软件是可靠的。
2
Well TK431 was a test well drilled in this area trying to solve the problem of borehole instability.
TK 431井是在该地区实施的一口解决该井段井眼失稳问题的试验井。
3
The test results are compared with Lugeon test results in the same borehole and statistical analysis of permeability test results in other areas.