1887

Abstract

Summary

When stimulating a reservoir at depth, the existing fractures are propagated and coalesce. Whilst at low stresses Mode I (tensile) fracturing is mostly dominating, at large overburden stresses Mode II (shear) becomes the dominant mechanism for fracture extension. The contribution analyses the influence of fracture orientation and stress path during a stimulation at depth and discusses the implications for the fracture extension. It is shown that Mode II becomes the dominant mode during hydraulic stimulation at depth >3km.

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/content/papers/10.3997/2214-4609.20141376
2014-06-16
2024-04-19
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References

  1. Backers, T.
    [2005] Fracture Toughness Determination and Micromechanics of Rock Under Mode I and Mode II Loading. Doctoral Thesis, University of Potsdam, Germany.
    [Google Scholar]
  2. Backers, T., Rybacki, E., Alber, M. and Stephansson, O.
    [2002] Fractography of rock from the new Punch-Through Shear Test. Structural Integrity and Fracture – The International Conference on Structural Integrity and Fracture SIF 2002, Perth, Australia.
    [Google Scholar]
  3. Backers, T. and Stephansson, O.
    [2012] ISRM Suggested Method for the Determination of Mode II Fracture Toughness. Rock Mechanics and Rock Engineering, 45(6), 1011–1022. DOI: 10.1007/s00603‑012‑0271–9.
    https://doi.org/10.1007/s00603-012-0271–9 [Google Scholar]
  4. Fowell, R.J.
    [1995] Suggested methods for determining Mode I fracture toughness using cracked chevron notched Brazilian disc specimens. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 32, 57–64.
    [Google Scholar]
  5. Lawn, B.
    [1993] Fracture of Brittle Solids. Cambridge University Press, Cambridge.
    [Google Scholar]
  6. Lockner, D.A.
    [1995] Rock failure. In: Ahrens, T.J. (Ed.) Rock Physics and Phase Relations, a Handbook of Physical Constants. AGU, Washington, 127–146.
    [Google Scholar]
  7. Ouchterlony, F.
    [1988] Suggested methods for determining the fracture toughness of rock. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 25, 71–96.
    [Google Scholar]
  8. Rao, Q.
    [1999] Pure Shear Fracture of Brittle Rock. Doctoral thesis, Division of Rock Mechanics, Luleå University, Sweden.
    [Google Scholar]
  9. Whittaker, B.N., Singh, R.N. and Sun, G.
    [1992] Rock Fracture Mechanics, Principles, Design and Applications. Elsevier, Amsterdam.
    [Google Scholar]
  10. Winter, R.
    [1983] Bruchmechanische Gesteinsuntersuchungen mit dem Bezug zu hydraulischen Frac-Versuchen in Tiefbohrungen. Dissertationsschrift der Ruhr-Universität Bochum.
    [Google Scholar]
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