Research on the Fixation Strength of High-Temperature Geothermal Drilling Cone Bit Teeth

• Published in: Energies (Basel) Vol. 18; no. 10; p. 2469
• Main Authors: Yang, Yan, Song, Dongdong, Chen, Lian, Yang, Yingxin, Ren, Haitao, Qiu, Shunzuo, Huang, Zequan
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.05.2025
• Subjects: cone bit; Crack propagation; Design; Drilling; Drilling and boring; Experiments; fastening force; high-temperature geothermal well; Hydraulics; interference fit; ISO standards; Simulation; Stress concentration; Teeth; Temperature; well wall heat transfer; well wall stability; China

During the drilling process of high-temperature geothermal wells, the high temperature at the bottom of the well and the complex lithology of the formation lead to poor tooth loss prevention in cone drill bits. This issue seriously affects the life and efficiency of geothermal drilling. The stabilit...