Geomechanics and Engineering

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The effect of well inclination angle on sand production using FDM-FEM modelling; A case study: One of the oil fields in Iran

  • Nemat Nemati (Department of Mining Engineering, Science and Research Branch, Islamic Azad University) ;
  • Kamran Goshtasbi (Department of Mining Engineering, Faculty of Engineering, Tarbiat Modares University) ;
  • Kaveh Ahangari (Department of Mining Engineering, Science and Research Branch, Islamic Azad University) ;
  • Reza Shirinabadi (Department of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University)
  • Received : 2022.01.10
  • Accepted : 2024.06.28
  • Published : 2024.07.25
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Abstract

The drilling angle of the well is an important factor that can affect the sand production process and make its destructive effects more severe or weaker. This study investigated the effect of different well angles on sand production for the Asmari Formation, located in one of the oil fields southwest of Iran. For this purpose, a finite difference model was developed for three types of vertical (90°), inclined (45°), and horizontal (0°) wells with casing and perforations in the direction of minimum and maximum horizontal stresses, then coupled with fluid flow. Here, finite element meshing was used, because the geometry of the model is so complex and the implementation of finite difference meshes is impossible or very difficult for such models. Using a combined FDM-FEM model with fluid flow, the sand production process in three different modes with different flow rates for the Asmari sandstone was investigated in this study. The results of numerical models show that the intensity of sand production is directly related to the in-situ stress state of the oil field and well drilling angle. Since the stress regime in the studied oil field is normal, the highest amount of produced sand was in inclined wells (especially wells drilled in the direction of minimum horizontal stress) and the lowest amount of sand production was related to vertical wellbore. Also, the Initiation time of sand production in inclined wells was much shorter than in other wellbores.

Keywords

Acknowledgement

The authors wish to thank the National Iranian South Oil Company (NISOC) for this work's technical information and financial support. The authors also appreciate Christine Detournay for providing one of her valuable studies to complement the scientific information in this research.

References

  1. Abdollahie Fard, I., Braathen, A., Mokhtari, M. and Alavi, S.A. (2006), "Interaction of the Zagros Fold Thrust Belt and the Arabian-type, deep-seated folds in the Abadan Plain and the Dezful Embayment, SW Iran", Petroleum Geosci., 12(4), 347-362. https://doi.org/10.1144/1354-079305-706.
  2. Al-Ajmi, A.M. (2006), "Wellbore stability analysis based on a new true-triaxial failure criterion", Ph.D. Dissertation, Royal Institute of Technology, Stockholm.
  3. Al-Ajmi, A.M. and Zimmerman, R.W. (2006a), "A New 3D stability model for the design of non-vertical wellbores", The 41st U.S. Symposium on Rock Mechanics (USRMS), Golden, Colorado, June.
  4. Al-Ajmi, A.M. and Zimmerman, R.W. (2006b), "Stability analysis of deviated boreholes using the Mogi-Coulomb failure criterion, with applications to some oil and gas reservoirs", Proceedings of the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, Bangkok, Thailand, November. https://doi.org/10.2118/104035-MS.
  5. Al-Ajmi, A.M. and Zimmerman, R.W. (2006c), "Stability analysis of vertical boreholes using the Mogi-Coulomb failure criterion", Int. J. Rock Mech. Min. Sci., 43(8), 1200-1211. https://doi.org/10.1016/j.ijrmms.2006.04.001.
  6. Alavi, M. (2004), "Regional stratigraphy of the Zagros fold-thrust belt of Iran and its proforeland evolution", Am. J. Sci., 304(1), 1-20. https://doi.org/10.2475/ajs.304.1.1.
  7. Al-Shaaibi, Sh.K., Al-Ajmi, A.M. and Al-Wahaibi, Y. (2013), "Three dimensional modeling for predicting sand production", J. Petroleum Sci. Eng., 109, 348-363. https://doi.org/10.1016/j.petrol.2013.04.015.
  8. API Specification (2012), 5CT, ISO 11960:2011, Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells, American Petroleum Institute (Purchasing Guidelines); USA.
  9. Berberian, M. (1995), "Master "blind" thrust faults hidden under the Zagros folds: active basement tectonics and surface morphotectonics", Tectonophysics, 241(3-4), 193-224. https://doi.org/10.1016/0040-1951(94)00185-C.
  10. Detournay, C. and Wu, B. (2006), "Semi-analytical models for predicting the amount and rate of sand production", Multiphysics Coupling and Long Term Behaviour in Rock Mechanics - Van Cotthem, Charlier, Thimus & Tshibangu (eds), Taylor & Francis Group, London. https://doi.org/10.1201/9781439833469.ch53.
  11. Feng, Y., Li, X. and Gray, K.E. (2017), "Development of a 3D numerical model for quantifying fluid-driven interface debonding of an injector well", Int. J. Greenhouse Gas Control, 62, 76-90. https://doi.org/10.1016/j.ijggc.2017.04.008.
  12. Ghalambor, A., Hayatdavoudi, A., Alcocer, C.F. and Koliba R.J. (1989), "Predicting sand production in U.S. gulf coast gas wells producing free water", J. Petroleum Technol., 41(12), 1336-1343. https://doi.org/10.2118/17147-PA.
  13. Hansen, B. (2018), Production casing design considerations, Devon Energy Corporation (NYSE: DVN), Oklahoma City, Oklahoma, USA. www.devonenergy.com.
  14. Itasca Consulting Group, Inc. (2021), User's Manual of FLAC3D (Fast Lagrangian Analysis of Continua in 3-Dimensions), Version 7.0, Minneapolis, Minnesota USA. www.itascacg.org. 
  15. Midas GTS NX v. 1.2 (2019), User's Manual of MIDAS G.T.S. N.X. (GeoTechnical analysis System-New eXperience) Software, Midasoft Inc., New York, NY, USA. https://www.midasoft.com/geo/gtsnx/products/midasgtsnx.
  16. Morita, N. (2004), "Well orientation effect on borehole stability", Proceedings of the SPE Annual Technical Conference and Exhibition, Houston, Texas, USA. September, https://doi.org/10.2118/89896-MS.
  17. Papamichos, E. and Malmanger, E.M. (1999), "A sand erosion model for volumetric sand predictions in a North Sea reservoir", SPE Reservoir Eval. Eng., 4(1), 42-50, https://doi.org/10.2118/69841-PA.
  18. Papamichos, E., Vardoulakis, I., Tronvoll, J. and Skjvrstein, A. (2001), "Volumetric sand production model and experiment", Int. J. Numer Anal. Method. Geomech., 25(8), 789-808. https://doi.org/10.1002/nag.154.
  19. Papamichos, E. and Furui, K. (2013), "Sand production initiation criteria and their validation", Proceedings of the 47th U.S. Rock Mechanics/Geomechanics Symposium, San Francisco, California, USA, June.
  20. Salencon, J. (1969), "Contraction quasi-statique d'une cavite a symetrie spherique ou cylindrique dans un milieu elasto-plastique", Annales des Ponts et Chaussees, 4, 231-236.
  21. Veeken, C.A.M., Davies, D.R., Kanter, C.J. and Kooijman, A.P. (1991), "Sand production prediction review: Developing an integrated approach", Proceedings of the SPE Annual Technical Conference and Exhibition, Dallas, Texas, USA, October. https://doi.org/10.2118/22792-MS.
  22. Volonte, G., Scarfato, F. and Brignoli, M. (2013), "Sand prediction: A practical finite-element 3D approach for real field applications", SPE Production and Operations, 28(01), 95-108, https://doi.org/10.2118/134464-PA.
  23. Wan, R.G., Liu, Y. and Wang, J. (2007), "A multiphase flow approach to modeling sand production using finite elements", J. Can. Petroleum Technol., 46(4), 40-46, https://doi.org/10.2118/07-04-04.
  24. Wang, J., Yale, D. and Dasari, G. (2011), "Numerical Modeling of Massive Sand Production", SPE Annual Technical Conference and Exhibition, Denver, Colorado, USA, October, https://doi.org/10.2118/147110-MS.
  25. Wang, J. and Papamichos, E. (2012), "Sand Production by Different Criteria and a Validation by a Perforated Test in a Sandstone", SPE Heavy Oil Conference Canada, Calgary, Alberta, Canada, June, https://doi.org/10.2118/158255-MS.