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![a) Position and force of drill collars while drilling in the wellbore;... | Download Scientific Diagram a) Position and force of drill collars while drilling in the wellbore;... | Download Scientific Diagram](https://www.researchgate.net/publication/349271844/figure/fig1/AS:990628628398080@1613195678429/a-Position-and-force-of-drill-collars-while-drilling-in-the-wellbore-b-Schematic.png)