| Geological Publishing House, Institute of Exploration Technology, Chinese Academy of Geological Sciences | Host |
| Citation: |
GAO Shen-you, SUN Jian-hua, CAI Ji-xiong, LIU Di-lei. Calculation Analysis on Negative Angle Thread Torque of Wire-line Coring Drill Pipe and Test Research[J]. DRILLING ENGINEERING, 2016, (5): 45-50. doi: 10.3969/j.issn.1672-7428.2016.05.010
|
Calculation Analysis on Negative Angle Thread Torque of Wire-line Coring Drill Pipe and Test Research
-
Abstract
The analysis is made on the stress state of negative angle thread of wire-line coring drill pipe, the thread stress sit-uation and anti-twist property of CNHT drill pipe used for deep hole wire-line core drilling are calculated based on static and material mechanics.Theoretical calculations and static torsion test were taken on negative angle thread with different taper and tooth height.It is found that theoretical results and test results are very close;by which, the accuracy of the calculation meth-od is determined and the parameters of negative angle thread with strong anti-twist property are optimized and summarized. -
-
Access History
Export File
Citation
GAO Shen-you, SUN Jian-hua, CAI Ji-xiong, LIU Di-lei. Calculation Analysis on Negative Angle Thread Torque of Wire-line Coring Drill Pipe and Test Research[J]. DRILLING ENGINEERING, 2016, (5): 45-50. doi: 10.3969/j.issn.1672-7428.2016.05.010
DownLoad: