Paper Title:
Non-Linear Finite Element Analysis of Contact-Impact between Drill String and Wellbore under Air Drilling
  Abstract

The dynamic mechanics model was built up to analyze the contact-impact between drill string and wellbore according to the characteristics of contact-impact, based on non-linear finite element method and Lagrange method. The dynamic mechanics equations were deduced by the dynamic mechanics model. The stress and deformation field of drill string with different parameters of bottom hole were obtained and tested by experiments and numerical simulation respectively. And also, the propagation laws of stress wave generated by contact-impact in drill pipe were studied. The comprehensive results indicate that the numerical results agree well with the actual dynamic process of contact-impact. The stress waves generated by contact-impact cause the change of stress. The contact-impact between drill string and wellbore under air drilling is the main reason for early drill string failure.

  Info
Periodical
Advanced Materials Research (Volumes 291-294)
Chapter
Dynamic Mechanical Analysis, Optimization and Control
Edited by
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
Pages
1578-1581
DOI
10.4028/www.scientific.net/AMR.291-294.1578
Citation
B. F. Yu, X. Z. Yan, X. J. Yang, G. S. Li, "Non-Linear Finite Element Analysis of Contact-Impact between Drill String and Wellbore under Air Drilling", Advanced Materials Research, Vols. 291-294, pp. 1578-1581, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Min Chen, X.M. Jiang, Zu Xin Zhao, X.B. Huang
Abstract:According to structural feature and seal requirement for large scale cutting tube machine, the non-standard rubber lip seal ring was...
636
Authors: Ying Qiang Xu, Tao Zhang, Peng Xu
Abstract:Contact fatigue is the primary failure form in the closed and well lubricated gear driving. Residual stress is an important factor influenced...
1086
Authors: Yong Qiang Yang, Li Li Xie
Abstract:In order to solve the problem of collision in engineering field, the dynamic equation of collision system was established based on FEM(finite...
62
Authors: Magd Abdel Wahab, R. Hojjati Talemi, Patrick de Baets
Abstract:Fretting fatigue occurs when two contact bodies undergo small oscillatory relative motion due to cyclic loading. It leads to fretting damage,...
662
Authors: Hui Pang, Hong Yan Li, Zong De Fang, Xiao Yuan Zhu
Chapter 3: Advanced Manufacturing Technology (2)
Abstract:Taking the composite rubber suspension of a 6×4 heavy vehicle as research object, an accurate finite element model for the composite...
1702