1887

Abstract

Summary

Laboratory experiments have been performed with a number of shale samples, including commonly studied outcrops like Pierre and Mancos Shale. The angular dependences of unconfined strength, friction angle, static E-modulus and P-wave velocity have been measured and modelled. The anisotropy of the ratio between dynamic and static moduli is found to represent plastic / brittleness anisotropy. Stress and stress path dependent velocity anisotropy will be shown and related to possible 4D seismic applications. Implications for field applications to borehole stability and fracturing will be discussed.

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/content/papers/10.3997/2214-4609.20140030
2014-04-06
2024-03-29
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References

  1. Fjær, E. and Nes, O-M.
    (2013) Strength anisotropy of Mancos Shale. ARMA 13-519. 7 pp.
    [Google Scholar]
  2. Holt, R.M., Bhuiyan, M.H., Kolstø, M.I., Bakk, A., Stenebråten, J.F., and Fjær, E.
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    (2012) Static vs. Dynamic behavior of shale. ARMA 12-542. 7 pp.
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