Mechanical failure of cavities in poroelastic media

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The stress-induced failure of cavities in poroelastic media is investigated using an analytical solution of the elastic matrix inclusion problem of Eshelby and a rock failure criterion. The elastic properties of the porous matrix surrounding the cavity are modeled using a self-consistent version of the theory of Berryman while the cavity collapse criterion is based on a failure condition calibrated as a function of matrix mineralogy, grain size and porosity. The influence of the latter textural variables as well as pore fluid pressure and cavity shape and orientation relative to the far-field stress are evaluated. The region of failure on ... continued below

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39 p.

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Ozkan, G. & Ortoleva, P. December 31, 1998.

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Description

The stress-induced failure of cavities in poroelastic media is investigated using an analytical solution of the elastic matrix inclusion problem of Eshelby and a rock failure criterion. The elastic properties of the porous matrix surrounding the cavity are modeled using a self-consistent version of the theory of Berryman while the cavity collapse criterion is based on a failure condition calibrated as a function of matrix mineralogy, grain size and porosity. The influence of the latter textural variables as well as pore fluid pressure and cavity shape and orientation relative to the far-field stress are evaluated. The region of failure on the cavity surface is identified. These results are applied to the prediction of vug stability in a sedimentary basin in the context of vuggy reservoir exploration and production.

Physical Description

39 p.

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OSTI as DE99001623

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  • Other Information: PBD: [1998]

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  • Other: DE99001623
  • Report No.: DOE/PC/91008--23-Pt.4
  • Grant Number: AC22-94PC91008
  • DOI: 10.2172/307854 | External Link
  • Office of Scientific & Technical Information Report Number: 307854
  • Archival Resource Key: ark:/67531/metadc678703

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Creation Date

  • December 31, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Aug. 2, 2016, 2:42 p.m.

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Ozkan, G. & Ortoleva, P. Mechanical failure of cavities in poroelastic media, report, December 31, 1998; Germantown, Maryland. (digital.library.unt.edu/ark:/67531/metadc678703/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.