Version 1
: Received: 7 November 2024 / Approved: 7 November 2024 / Online: 7 November 2024 (13:23:43 CET)
How to cite:
Ye, H.; Yu, H.; He, S.; Tian, L.; Zheng, X.; Bu, C. Innovation and Application of Cluster Edge Teeth of DTH Hammer Drill Bit in Large Diameter Geothermal Well with High Strength Rock. Preprints2024, 2024110529. https://doi.org/10.20944/preprints202411.0529.v1
Ye, H.; Yu, H.; He, S.; Tian, L.; Zheng, X.; Bu, C. Innovation and Application of Cluster Edge Teeth of DTH Hammer Drill Bit in Large Diameter Geothermal Well with High Strength Rock. Preprints 2024, 2024110529. https://doi.org/10.20944/preprints202411.0529.v1
Ye, H.; Yu, H.; He, S.; Tian, L.; Zheng, X.; Bu, C. Innovation and Application of Cluster Edge Teeth of DTH Hammer Drill Bit in Large Diameter Geothermal Well with High Strength Rock. Preprints2024, 2024110529. https://doi.org/10.20944/preprints202411.0529.v1
APA Style
Ye, H., Yu, H., He, S., Tian, L., Zheng, X., & Bu, C. (2024). Innovation and Application of Cluster Edge Teeth of DTH Hammer Drill Bit in Large Diameter Geothermal Well with High Strength Rock. Preprints. https://doi.org/10.20944/preprints202411.0529.v1
Chicago/Turabian Style
Ye, H., Xiuhua Zheng and Changgen Bu. 2024 "Innovation and Application of Cluster Edge Teeth of DTH Hammer Drill Bit in Large Diameter Geothermal Well with High Strength Rock" Preprints. https://doi.org/10.20944/preprints202411.0529.v1
Abstract
Down the Hole (DTH) Hammer drilling has high rock breaking efficiency and strong advantage in hard rock drilling, which can reduce the cost of geothermal drilling. However, when the drill bit rotation speed and the DTH percussion frequency do not match properly, specially when the drill bit diameter is large and the ball tooth diameter is small, while drilling high strength formation, the edge teeth of the drill bit are prone to fracture and break, leading to the failure of the drill bit and a significant reduction in its lifespan.This paper investigates the failure modes firstly, then analyzes the failure mechanism of large diameter DTH bit, and proposes a novel method of cluster edge teeth of DTH hammer drill bit in large diameter geothermal well with high strength rock. The drill bits of this innovative design have been mass-produced. Widespread field applications have shown significant improvements in drill bit life and drilling efficiency, obtaining the reduction of drilling costs.
Keywords
DTH Hammer drill bit; Large diameter geothermal well; High strength rock; Failure of edge teeth; Cluster Edge Tooth
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
