1887

Abstract

Summary

In this study, we created various finite element models to simulate the effects of evolving mechanical loads on cement sheath integrity. The changing cement mechanical properties were taken into consideration for these models. The von Mises stress were calculated and the various failure modes were detected.

We used Abaqus and Comsol fatigue finite element package for 3D modeling. Wellbore is modeled using a hole inside a cube. Abaqus mesh is refined close to the wellbore where internal pressure is applied. An 8-node brick, trilinear displacement, trilinear pore pressure (C3D8P) is used as element type. Two yield criteria are used for predicting the failure: Drucker-Prager and Mohr-Coulomb. Plastic strains and Mises stresses are plotted for three different values of applied internal pressure: 50 MPa, 80 MPa and 120 MPa. The Drucker–Prager yield criterion is a pressure-dependent model. This criterion determines whether a material has failed or undergone plastic yielding or not. The Drucker–Prager yield criterion have been applied to rock, concrete, polymers, foams, and other pressure-dependent materials.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201701443
2017-06-12
2024-04-25
Loading full text...

Full text loading...

References

  1. De Andrade, J., Sangesland, S., Todorovic, J., & Vrålstad, T.
    (2015, April22). Cement Sheath Integrity During Thermal Cycling: A Novel Approach for Experimental Tests of Cement Systems. Society of Petroleum Engineers. doi: 10.2118/173871‑MS
    https://doi.org/10.2118/173871-MS [Google Scholar]
  2. Murrill, B.
    , Hydraulic Fracturing and the National Environmental Policy Act (NEPA): Selected Issues, April25, 2012, Prepared for Members and Committees of Congress.
    [Google Scholar]
  3. Ravi, K., McMechan, D. E., Reddy, B. R., & Crook, R. J.
    (2007, June1). A Comparative Study of Mechanical Properties of Density-Reduced Cement Compositions. Society of Petroleum Engineers. doi: 10.2118/90068‑PA
    https://doi.org/10.2118/90068-PA [Google Scholar]
  4. Shadravan, A., Schubert, J., Amani, M., & Teodoriu, C.
    (2015, March1). Using Fatigue-Failure Envelope for Cement-Sheath-Integrity Evaluation. Society of Petroleum Engineers. doi: 10.2118/168321‑PA
    https://doi.org/10.2118/168321-PA [Google Scholar]
  5. Shadravan, A., Kias, E., Lew, R., & Maharidge, R.
    (2015, October11). Utilizing the Evolving Cement Mechanical Properties under Fatigue to Predict Cement Sheath Integrity. Society of Petroleum Engineers. doi: 10.2118/175231‑MS
    https://doi.org/10.2118/175231-MS [Google Scholar]
  6. Thiercelin, M. J., Dargaud, B., Baret, J. F, and Rodriguez, W. J.
    1998. Cement Design Based on Cement Mechanical Response. SPE-52890. Originally presented at 1997 SPE Annual Technical Conference and Exhibition held in San Antonio, Texas, 5–8 October 1997.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201701443
Loading
/content/papers/10.3997/2214-4609.201701443
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error