𝔖 Bobbio Scriptorium
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Improvement in drills for boring rocks

✍ Scribed by John Thomson


Book ID
113152114
Publisher
Elsevier Science
Year
1856
Tongue
English
Weight
246 KB
Volume
62
Category
Article
ISSN
0016-0032

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πŸ“œ SIMILAR VOLUMES


Fatigue life improvement of drill collar
✍ M.J. Knight; F.P. Brennan πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 703 KB

The majority of drillstem failures are attributed to fatigue\ particularly in BHA connections where there is a high level of stress concentration in the thread roots[ Any stress concentration combined with a modest amount of bore eccentricity in the drill collar may result in a notable reduction in