Paper Title:
Influence of Absorber’s Stiffness and Installation Site on Bit Trajectory
  Abstract

A model of drillstring system dynamics was derived based on the drillstring’s Dynamics Equation, System Dynamics Theory and the optimization of absorber’s stiffness and installation site. A numerical calculation approach for solving drillstring system and bit movement was presented according to the drilling parameters. And this paper employed the simulation calculations to analyze and optimize absorber’s stiffness and installation site on different conditions. The results show that the absorber’s stiffness has significant impact on the movement frequencies of bit in the fourth quadrant when the bit next to the borehole wall drills ahead, and absorber has preferable ability of controlling deflection under stiffness for 3950kN/m and 6200kN/m; while the installation site of absorber has acute influence on the bit movement in the first quadrant, the third quadrant and the fourth quadrant, and the optimum position of the absorber is 0.6m distant from the bit. Parameters of absorber’s stiffness and installation site recommended in this study could improve the effectiveness of penetration and are good for controlling deflection and well path.

  Info
Periodical
Edited by
Shaobo Zhong, Yimin Cheng and Xilong Qu
Pages
838-842
DOI
10.4028/www.scientific.net/AMM.50-51.838
Citation
X. H. Zhu, Y.J. Jia, J. H. Li, "Influence of Absorber’s Stiffness and Installation Site on Bit Trajectory", Applied Mechanics and Materials, Vols. 50-51, pp. 838-842, 2011
Online since
February 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: Hai Yan Zhu, Qing You Liu, Xiao Hua Xiao, Jia Jia Jing
Abstract:In order to reveal the physical mechanism of air hammer drilling process, using the finite element methods (FEM), a three-dimensional (3D)...
1425
Authors: Hai Yan Zhu, Qing You Liu, Xiao Hua Xiao, Jia Jia Jing, Chao He
Abstract:Based on the failure mode of air hammer bit, a mechanical model of the tooth on the inclined plane is established. And then a new air hammer...
1435
Authors: Yan Chen, Zhi Yi Liu, Long Chen Duan
Abstract:The software CFDesign was used for the analysis of flow field simulation of two different kinds of drilling bit. The results showed that, if...
350
Authors: Gang Liu, Quan Zhi Yang, Bao Sheng He
Chapter 5: Reliability, Fault Diagnostics and Quality Monitoring
Abstract:Avoiding well collision has become an increasingly critical challenge for the drilling industry in recent years. The wellbore Anti-collision...
744
Authors: Hui Xia, Yi Hua Dou, Xin He Wang, Jiang Wen Xu
Chapter 9: Applied Mechanics and Mechanical Engineering
Abstract:There are three working conditions namely drilling a guide hole, expanding the guide hole and pulling back pipeline in trenchless directional...
1190