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Rock Mechanics and Rock Engineering

, Volume 49, Issue 2, pp 699–705 | Cite as

Modeling of Shales in Salt-Hydrocarbon Systems

  • Maria A. NikolinakouEmail author
  • Peter B. Flemings
  • Michael R. Hudec
Original Paper
  • 403 Downloads

Abstract

We model the stress–strain response of shale wall rocks to large deformations associated with the emplacement of salt bodies. We further identify the implications of these stress changes for hydrocarbon exploration. We model the mudrocks as porous elastoplastic materials. We employ both static and evolutionary approach for the modeling of salt systems and show that while the static one can model actual geologic geometries, only the evolutionary approach can provide a detailed description of the stress changes associated with the emplacement of salt. Hence, the evolutionary approach can register the overall stress history of the shale wall rocks, which is essential for predicting the present-day state of stress, porosity, and pore pressure. More generally, the evolutionary approach can provide useful insights for understanding Earth processes related to salt-hydrocarbon systems.

Keywords

Shales Forward modeling Salt diapir Poro-elastoplasticity Wellbore stability 

Notes

Acknowledgments

The discussed research projects were funded by the Applied Geodynamics Laboratory consortium and the University of Texas at Austin (U. T.) GeoFluids consortium. AGL is supported by the following companies: Anadarko, Apache, BHP Billiton, BP, CGG, Chevron, Cobalt, ConocoPhillips, Ecopetrol, ENI, ExxonMobil, Fugro, Global Geophysical, Hess, Ion, KNOC, McMoRan, Maersk, Marathon, Murphy, Nexen, Noble, Pemex, Petrobras, PGS, Repsol, Samson, Saudi Aramco, Shell, Statoil, Talisman, TGS, Total, Western Geco, and Woodside. U. T. GeoFluids is supported by the following companies: Anadarko, BHP Billiton, BP, Chevron, Conoco-Phillips, ExxonMobil, Hess, Murphy Oil, Repsol, Schlumberger, Shell, Statoil, and Total. The author received additional support from the U. T. Jackson School of Geosciences. This publication was authorized by the Director, Bureau of Economic Geology.

References

  1. ABAQUS (2009) Abaqus user guide and help documentation, Version 6.9, SIMULIA companyGoogle Scholar
  2. Albertz M, Beaumont C (2010) An investigation of salt tectonic structural styles in the Scotian Basin, offshore Atlantic Canada: 2. Comparison of observations with geometrically complex numerical models. Tectonics 29:TC4018. doi: 10.1029/2009TC002540
  3. Beltrão RLC, Sombra CL, Lage ACVM, Fagundes Netto JR, Henriques CCD (2009) Challenges and new technologies for the development of the pre-salt cluster, Santos Basin, Brazil. Paper presented at the Offshore Technology Conference, Houston, Texas, 4–7 May 2009Google Scholar
  4. Bradley WB (1978) Borehole failure near salt domes. Paper presented at the Society of Petroleum Engineers Annual Fall Technical Conference and Exhibition, Houston, Texas, 10/01/1978Google Scholar
  5. Chemia Z, Schmeling H, Koyi H (2009) The effect of the salt viscosity on future evolution of the Gorleben salt diapir, Germany. Tectonophysics 473:446–456. doi: 10.1016/j.tecto.2009.03.027 CrossRefGoogle Scholar
  6. Dusseault MB, Maury V, Sanfilippo F, Santarelli FJ (2004) Drilling around salt: risks, stresses, and uncertainties. Paper presented at the 38th US Rock Mechanics and Geomechanics Symposium, Houston, TX, 5–9 June 2004Google Scholar
  7. Fredrich JT, Fossum AF, Hickman RJ (2007) Mineralogy of deepwater Gulf of Mexico salt formations and implications for constitutive behavior. J Petrol Sci Eng 57:354–374. doi: 10.1016/j.petrol.2006.11.006 CrossRefGoogle Scholar
  8. Goteti R, Ings SJ, Beaumont C (2012) Development of salt minibasins initiated by sedimentary topographic relief. Earth Planet Sci Lett 339(340):103–116. doi: 10.1016/j.epsl.2012.04.045 CrossRefGoogle Scholar
  9. Gradmann S, Beaumont C, Albertz M (2009) Factors controlling the evolution of the Perdido Fold Belt, northwestern Gulf of Mexico, determined from numerical models. Tectonics 28:TC2002. doi: 10.1029/2008tc002326
  10. Henk A (2005) Pre-drilling prediction of the tectonic stress field with geomechanical models. First Break 23:53–57. doi: 10.3997/1365-2397.2005021 CrossRefGoogle Scholar
  11. Koupriantchik D, Meyers AG, Hunt S (2004) 3D geomechanical modelling towards understanding stress anomalies causing wellbore instability. Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), Houston, Texas, June 5–9, 2004Google Scholar
  12. Laubach SE, Eichhubl P, Hilgers C, Lander RH (2010) Structural diagenesis. J Struct Geol 32:1866–1872. doi: 10.1016/j.jsg.2010.10.001 CrossRefGoogle Scholar
  13. Luo G, Nikolinakou MA, Flemings PB, Hudec MR (2012) Geomechanical modeling of stresses adjacent to salt bodies: 1. Uncoupled models AAPG. Bulletin 96:43–64. doi: 10.1306/04111110144 CrossRefGoogle Scholar
  14. Mackay F, Inoue N, Fontoura SAB, Botelho F (2008) Geomechanical effects of a 3D vertical salt well drilling by FEA. Paper presented at the The 42nd US Rock Mechanics Symposium (USRMS), San Francisco, California, June 29–July 2, 2008Google Scholar
  15. Merrell MP (2012) Pressure and Stress at Mad Dog Field, Gulf of Mexico. The University of Texas at Austin, AustinGoogle Scholar
  16. Meyer D, Zarra L, Rains D, Meltz B, Hall T (2005) Emergence of the Lower Tertiary Wilcox trend in the deepwater Gulf of Mexico. World Oil 226(5):72–77Google Scholar
  17. Munson DE, Dawson PR (1979) Constitutive model for the low temperature creep of salt (with application to WIPP). SAND79-1853, Sandia National Laboratories, Albuquerque, NMCrossRefGoogle Scholar
  18. Nikolinakou MA, Luo G, Hudec MR, Flemings PB (2012) Geomechanical modeling of stresses adjacent to salt bodies: 2. poro-elasto-plasticity and coupled overpressures. Am Assoc Pet Geol Bull 96:65–85. doi: 10.1306/04111110143 Google Scholar
  19. Nikolinakou MA, Merrell MP, Luo G, Flemings PB, Hudec MR (2013) Geomechanical modeling of the Mad Dog salt, Gulf of Mexico. Paper presented at the 47th US Rock Mechanics Symposium, San Francisco, CA, 23–26 June, 2013Google Scholar
  20. Nikolinakou MA, Flemings PB, Hudec MR (2014a) Modeling stress evolution around a rising salt diapir. Mar Pet Geol 51:230–238. doi: 10.1016/j.marpetgeo.2013.11.021 CrossRefGoogle Scholar
  21. Nikolinakou MA, Hudec MR, Flemings PB (2014b) Comparison of evolutionary and static modeling of stresses around a salt diapir. Mar Pet Geol 57:537–545. doi: 10.1016/j.marpetgeo.2014.07.002 CrossRefGoogle Scholar
  22. Orlic B, Wassing BBT (2013) A study of stress change and fault slip in producing gas reservoirs overlain by elastic and viscoelastic caprocks. Rock Mech Rock Eng 46:421–435. doi: 10.1007/s00603-012-0347-6 CrossRefGoogle Scholar
  23. Rockfield (2010) ELFEN Forward Modeling User Manual. Rockfield Software LimitedGoogle Scholar
  24. Rowan MG, Ratliff RA (2012) Cross-section restoration of salt-related deformation: best practices and potential pitfalls. J Struct Geol 41:24–37. doi: 10.1016/j.jsg.2011.12.012 CrossRefGoogle Scholar
  25. Sanz PF, Dasari GR (2010) Controls on in situ stresses around salt bodies. Paper presented at the 44th US Rock Mechanics Symposium, Salt Lake City, UT June 27–30Google Scholar
  26. Seymour KP, Rae G, Peden JM, Ormston K (1993) Drilling close to salt diapirs in the North Sea. Paper presented at the Offshore Europe, Aberdeen, UK, 09/07/1993Google Scholar
  27. Terzaghi K, Peck RB, Mesri G (1996) Soil mechanics in engineering practice. Wiley, New YorkGoogle Scholar
  28. Urai JL, Spiers CJ (2007) The effect of grain boundary water on deformation mechanisms and rheology of rocksalt during long-term deformation. In: Wallner M, Lux K, Minkley W, Hardy Jr H (eds) Proceedings of the 6th conference on the mechanical behavior of salt, ‘SaltMech6’, Hannover, Germany, 22–25 May 2007. Taylor and Francis, LondonGoogle Scholar
  29. van-der-Zee W, Ozan C, Brudy M, Holland M (2011) 3D geomechanical modeling of complex salt structures. In: SIMULIA Customer ConferenceGoogle Scholar
  30. Willson SM et al (2003) Wellbore stability challenges in the deep water, Gulf of Mexico: case history examples from the pompano field. Paper presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, 5–8 October 2003Google Scholar
  31. Zoback MD (2007) Reservoir geomechanics, 1st edn. Cambridge University Press, CambridgeGoogle Scholar

Copyright information

© Springer-Verlag Wien 2015

Authors and Affiliations

  • Maria A. Nikolinakou
    • 1
    Email author
  • Peter B. Flemings
    • 2
  • Michael R. Hudec
    • 1
  1. 1.Bureau of Economic GeologyThe University of Texas at AustinAustinUSA
  2. 2.Jackson School of GeosciencesThe University of Texas at AustinAustinUSA

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