Paper Title:
The Effect of Anisotropy of Medium on the Stress State around a Borehole
  Abstract

Based on the analytical solution for the stress field around an inclined borehole in an anisotropic medium, a computer program was developed and a serial parametric study was conducted. The effects of parameters such as degree of anisotropy, borehole inclination, bedding plane inclination and in-situ stress conditions on the stress distribution around a borehole were evaluated. The results showed that medium anisotropy has little effect on borehole fracture analysis at low borehole inclinations, but its influence becomes significant for highly inclined boreholes. As the degree of anisotropy varies the maximum shear stress changes remarkably. This indicates that the degree of anisotropy plays a role in the collapse failure of a borehole. The information generated in these studies can be used in predicting the fracture or collapse-initiating pressures.

  Info
Periodical
Advanced Materials Research (Volumes 291-294)
Chapter
Mechanical Reliability Theory and Engineering
Edited by
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
Pages
2139-2144
DOI
10.4028/www.scientific.net/AMR.291-294.2139
Citation
Y. S. Jiao, M. H. Fan, L. J. Li, Z. X. Cai, "The Effect of Anisotropy of Medium on the Stress State around a Borehole", Advanced Materials Research, Vols. 291-294, pp. 2139-2144, 2011
Online since
July 2011
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Price
$32.00
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