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。
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.
试验表明,采用合适的冶炼工艺,大型转炉加炉外精炼能够批量生产超低硫低磷钻杆用钢,使钻杆获得高横向冲击韧性。
Test results show that such steel can be mass produced with technology of a large converter plus the secondary refining, which can insure drill pipes for the transverse impact toughness.
试验表明,采用合适的冶炼工艺,大型转炉加炉外精炼能够批量生产超低硫低磷钻杆用钢,使钻杆获得高横向冲击韧性。
Test results show that such steel can be mass produced with technology of a large converter plus the secondary refining, which can insure drill pipes for the transverse impact toughness.
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