Journal of Failure Analysis and Prevention

, Volume 18, Issue 2, pp 342–349 | Cite as

Failure Analysis of Roller Cone Bit Bearing Based on Mechanics and Microstructure

Technical Article---Peer-Reviewed
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Abstract

The service life of the roller cone bit mainly depends on the bearing. In order to figure out the cause and mechanism of bearing failure, mechanics and microstructure analysis of failed roller cone bit bearings are carried out. The results show that the bearing failure mainly includes wear (including adhesive wear and abrasive wear), plastic deformation, crack, fracture and burn. The main reasons for these failures are: abrasives and temperature rise caused by the cuttings and the lubrication failure; stress concentration, shock and vibration due to uneven load and fit clearance; and initial cracks or deficiencies because of unqualified surface treatment. In addition, investigation indicates that seal failure can bring degeneration on the bearing surface, which reduces the hardness of the bearing surface and thus accelerates the failure of the bearing.

Keywords

Roller cone bit bearing Failure analysis Mechanics Microstructure Seal 

Notes

Acknowledgments

The authors wish to express their gratitude for the financial support by the project of Jiangxi Feilong Rock Bit Manufacture Co., Ltd., Research on Prolonging the Life of Roller Cone Bit Bearing.

References

  1. 1.
    J. Kelly, L. Joseph, Forecasting the life of rock-bit journal bearings. SPE Dril. Eng. 5(02), 165–170 (1990).  https://doi.org/10.2118/17565-PA CrossRefGoogle Scholar
  2. 2.
    S.L. Chen, K. Blackwood, E. Lamine, Field investigation of the effects of stick-slip, lateral, and whirl vibrations on roller cone bit performance. in SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, pp. 15–20 (1999).  https://doi.org/10.2118/76811-pa
  3. 3.
    D. Veeningen, Novel high speed telemetry system with measurements along the string mitigates drilling risk and improves drilling efficiency, Brasil Offshore. Soc. Pet. Eng. (2011).  https://doi.org/10.2118/143430-MS Google Scholar
  4. 4.
    H.I. Bilgesu, U. Altmis, S. Ameri, et al., A new approach to predict bit life based on tooth or bearing failures. in SPE Eastern Regional Meeting, Society of Petroleum Engineers, pp. 253–257 (1998).  https://doi.org/10.2118/51082-ms
  5. 5.
    Q.Y. Liu, B.S. Huang, Establishment of lateral vibration dynamic model of roller cone rock bit and its solution. Nat. Gas Ind. 21(4), 55–56 (2001).  https://doi.org/10.3321/j.issn:1000-0976.2001.04.015 Google Scholar
  6. 6.
    K.M. Marshek, H.H. Chen, Effect of clearance on rotary rock bit journal bearing contact stress. J. Energy Resour. Technol. 108(1), 1–7 (1986).  https://doi.org/10.1115/1.3231235 CrossRefGoogle Scholar
  7. 7.
    W. He, H.P. Tang, X.U. Tong et al., Mechanical analysis and improved structure experiment of rock bit sliding bearing. Oil Field Equip. 40(12), 66–69 (2011).  https://doi.org/10.3969/j.issn.1001-3482,2011.12.017 Google Scholar
  8. 8.
    Q. Hu, Q.Y. Liu, Y.B. Liu, Application of fuzzy orthogonal design to the study of wear ability of sliding bearing in a roller bit. China Pet. Mach. 29(2), 31–34 (2005). (in Chinese) Google Scholar
  9. 9.
    D.E. Pearce, A new rock bit bearing provides superior cone retention. in SPE/IADC Drilling Conference, Society of Petroleum Engineers, pp. 39–47 (1990).  https://doi.org/10.2118/19909-ms
  10. 10.
    I. Zidaru, A.C. Drumeanu, I. Tudor, Some considerations concerning the friction moment of three-cone bits sealing rings. J. Balk. Tribol. Assoc. 11(4), 529 (2005)Google Scholar
  11. 11.
    A.F. Zahradnik, T.J. Koltermann, D.Q. Nguyen, et al, Bearing insert sleeve for roller cone bit, U.S. Patent 7387177, 2008Google Scholar
  12. 12.
    S. Gillick, R. Hamilton, A. Singh, et al., Rock mechanics lab testing and computerized simulation of bit dynamics improves drilling performance in horizontal chalk reservoirs. in IADC/SPE Drilling Conference. Society of Petroleum Engineers (2004).  https://doi.org/10.2118/87101-ms
  13. 13.
    S. Chen, P.C. Sui, Roller cone drill bits with optimized bearing structures, U.S. Patent 7360612, 2008Google Scholar
  14. 14.
    Z.Q. Huang, Q. Li, Y. Zhou et al., Experimental research on the surface strengthening technology of roller cone bit bearing based on the failure analysis. Eng. Fail. Anal. 29, 12–26 (2013).  https://doi.org/10.1016/j.engfailanal.2012.08.018 CrossRefGoogle Scholar
  15. 15.
    Y.X. Yang, X.P. Zhang, G.X. Zhong, Investigation into the penetrating mechanism of roller bits and the load on each tooth row. Pet. Mach. 19(12), 19–25 (1991). (in Chinese) Google Scholar
  16. 16.
    X.P. Zhang, C.S. Huang, F.J. Yao et al., How to determine and calculate bit bearing load. Oil Field Equip. 13(4), 39–46 (1984). (in Chinese) Google Scholar
  17. 17.
    C.S. Kabir, A.R. Hasan, G.E. Kouba, M. Ameen, Determining circulating fluid temperature in drilling, workover, and well control operations. SPE Drill. Complet. 11(02), 74–79 (1996).  https://doi.org/10.2118/24581-PA CrossRefGoogle Scholar

Copyright information

© ASM International 2018

Authors and Affiliations

  1. 1.School of Mechatronic EngineeringSouthwest Petroleum UniversityChengduChina

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