MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • Earth Resources Laboratory
  • ERL Industry Consortia Technical Reports
  • View Item
  • DSpace@MIT Home
  • Earth Resources Laboratory
  • ERL Industry Consortia Technical Reports
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

An approach for predicting stress-induced anisotropy around a borehole

Author(s)
Fang, Xinding; Fehler, Michael; Zhu, Zhenya; Chen, Tianrun; Brown, Stephen; Cheng, Arthur; Toksoz, M. Nafi; ... Show more Show less
Thumbnail
DownloadFang-Fehler-Zhuetal_An_Approach_for_Predicting_stree_induced_anisotropy_around_a_borehole.pdf (724.5Kb)
Other Contributors
Massachusetts Institute of Technology. Earth Resources Laboratory
Metadata
Show full item record
Abstract
Formation elastic properties near a borehole may be altered from their original state due to the stress concentration around the borehole. This could result in a biased estimation of formation properties but could provide a means to estimate in situ stress from sonic logging data. In order to properly account for the formation property alteration, we propose an iterative numerical approach to calculate the stress-induced anisotropy around a borehole by combining the rock physics model of Mavko et al. (1995) and a finite-element method. We show the validity and accuracy of our approach by comparing numerical results to laboratory measurements of the stress-strain relation of a sample of Berea sandstone, which contains a borehole and is subjected to uniaxial stress loading. Our iterative approach converges very fast and can be applied to calculate the spatially varying stiffness tensor of the formation around a borehole for any given stress state.
Date issued
2012
URI
http://hdl.handle.net/1721.1/90467
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;2012-09
Keywords
Logging, Inversion

Collections
  • ERL Industry Consortia Technical Reports

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.