DOI QR코드

DOI QR Code

Geomechanical study of well stability in high-pressure, high-temperature conditions

  • Moradi, Seyyed Shahab Tabatabaee (Well Drilling Department, Saint-Petersburg Mining University) ;
  • Nikolaev, Nikolay I. (Well Drilling Department, Saint-Petersburg Mining University) ;
  • Chudinova, Inna V. (Well Drilling Department, Saint-Petersburg Mining University) ;
  • Martel, Aleksander S. (Well Drilling Department, Saint-Petersburg Mining University)
  • Received : 2017.03.06
  • Accepted : 2018.05.12
  • Published : 2018.10.30

Abstract

Worldwide growth in hydrocarbon and energy demand is driving the oil and gas companies to drill more wells in complex situations such as areas with high-pressure, high-temperature conditions. As a result, in recent years the number of wells in these conditions have been increased significantly. Wellbore instability is one of the main issues during the drilling operation especially for directional and horizontal wells. Many researchers have studied the wellbore stability in complex situations and developed mathematical models to mitigate the instability problems before drilling operation. In this work, a fully coupled thermoporoelastic model is developed to study the well stability in high-pressure, high-temperature conditions. The results show that the performance of the model is highly dependent on the truly evaluated rock mechanical properties. It is noted that the rock mechanical properties should be evaluated at elevated pressures and temperatures. However, in many works, this is skipped and the mechanical properties, which are evaluated at room conditions, are entered into the model. Therefore, an accurate stability analysis of high-pressure, high-temperature wells is achieved by measuring the rock mechanical properties at elevated pressures and temperatures, as the difference between the model outputs is significant.

Keywords

References

  1. Abdideh, M. and Fathabadi, M.R. (2013), "Analysis of stress field and determination of safe mud window in borehole drilling (case study: SW Iran)", J. Petrol. Explor. Prod. Technol., 3(2), 105-110. https://doi.org/10.1007/s13202-013-0053-2
  2. Al-Ajmi, A.M. and Zimmerman, R.W. (2006), "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
  3. Aslannezhad, M. and Jalalifar, H. (2015), "Determination of a safe mud window and analysis of wellbore stability to minimize drilling challenges and non-productive time", J. Petrol. Explor. Prod. Technol., 6(3), 493-503. https://doi.org/10.1007/s13202-015-0198-2
  4. Bradely, W.B. (1979), "Failure of inclined boreholes", J. Energy Resour. Technol., 101(4), 232-239. https://doi.org/10.1115/1.3446925
  5. Chen, G. and Ewy, R.T. (2005), "Thermoporoelastic effect on wellbore stability", SPE J., 10(2), 121-129.
  6. Chen, X. Tan, C.P. and Haberfield, C.M. (1997), "Guidelines for efficient wellbore stability analysis", Int. J. Rock Mech. Min. Sci., 34 (3-4), 50.e1-50.e14. https://doi.org/10.1016/S1365-1609(97)00249-9
  7. Choi, S.K., Tan, C.P. and Freij-Ayoub, R. (2004), A Coupled Mechanical-Thermal-Physico-Chemical Model for the Study of Time-Dependent Wellbore Stability in Shales, in Elsevier Geo-Engineering Book Series, Elsevier, 581-586.
  8. Elyasi, A. and Goshtasbi, K. (2015), "Using different rock failure criteria in wellbore stability analysis", Geomech. Energy Environ., 2, 15-21. https://doi.org/10.1016/j.gete.2015.04.001
  9. Farahani, H.S., Yu, M., Miska, S.Z., Takach, N.E. and Chen, G. (2006), "Modeling transient thermo-poroelastic effects on 3D wellbore stability", Proceedings of the SPE Annual Technical Conference and Exhibition, Texas, U.S.A., September.
  10. He, S., Wang, W., Tang, M., Hu, B. and Xue, W. (2014), "Effects of fluid seepage on wellbore stability of horizontal wells drilled underbalanced", J. Nat. Gas Sci. Eng., 21, 338-347.
  11. Kanfar, M.F., Chen, Z. and Rahman, S.S. (2015), "Effect of material anisotropy on time-dependent wellbore stability", Int. J. Rock Mech. Min. Sci., 78, 36-45. https://doi.org/10.1016/j.ijrmms.2015.04.024
  12. Kurashige, M. (1989), "A thermoelastic theory of fluid-filled porous materials", Int. J. Solids Struct., 25(9), 1039-1052. https://doi.org/10.1016/0020-7683(89)90020-6
  13. Lee, H., Ong, S.H., Azeemuddin, M. and Goodman, H. (2012), "A wellbore stability model for formations with anisotropic rock strengths", J. Petrol. Sci. Eng., 96, 109-119.
  14. Li, X., Cui, L. and Roegiers, J.C. (1998), "Thermoporoelastic analyses of inclined boreholes", Proceedings of the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, July.
  15. Liu, M., Jin, Y., Lu, Y., Chen, M. and Wen, X. (2015), "Oil-based critical mud weight window analyses in HTHP fractured tight formation", J. Petrol. Sci. Eng., 135, 750-764.
  16. Ma, T. and Chen, P. (2015), "A wellbore stability analysis model with chemical-mechanical coupling for shale gas reservoirs", J. Nat. Gas Sci. Eng., 26, 72-98. https://doi.org/10.1016/j.jngse.2015.05.028
  17. Ma, T., Chen, P., Yang, C. and Zhao, J. (2015), "Wellbore stability analysis and well path optimization based on the breakout width model and Mogi-Coulomb criterion", J. Petrol. Sci. Eng., 135, 678-701. https://doi.org/10.1016/j.petrol.2015.10.029
  18. Manshad, A.K., Jalalifar, H. and Aslannejad, M. (2014), "Analysis of vertical, horizontal and deviated wellbores stability by analytical and numerical methods", J. Petrol. Explor. Prod. Technol., 4(4), 359-369. https://doi.org/10.1007/s13202-014-0100-7
  19. McTigue, D.F. (1990), "Flow to a heated borehole in porous, thermoelastic rock: analysis", Water Resour. Res., 26(8), 1763-1774. https://doi.org/10.1029/WR026i008p01763
  20. Moradi, S.S.T., Ghasemi, M.F., Nikolaev, N.I. and Lykov, Y.V. (2016), "Effect of fault stress regime on the mechanical stability of horizontal boreholes", Proceedings of the 4th International Conference GeoBaikal 2016: From East Siberia to the Pacific-Geology, Exploration and Development, Irkutsk, Russia, August.
  21. Simangunsong, R.A., Villatoro, J.J. and Davis, A.K. (2006), "Wellbore stability assessment for highly inclined wells using limited rock-mechanics data", Proceedings of the SPE Annual Technical Conference and Exhibition, Texas, U.S.A., September.
  22. Tabatabaee Moradi, S.S., Nikolaev, N.I. and Naseri, Y. (2015), "Developing high resistant cement systems for high-pressure, high-temperature applications", Proceedings of the SPE Russian Petroleum Technology Conference, Moscow, Russia, October.
  23. Wang, Y. and Dusseault, M.B. (2003), "A coupled conductive-convective thermo-poroelastic solution and implications for wellbore stability", J. Petrol. Sci. Eng., 38(3-4), 187-198. https://doi.org/10.1016/S0920-4105(03)00032-9
  24. Wu, B., Wu, B., Zhang, X. and Jeffrey, R.G. (2011), "Wellbore stability analyses for HPHT wells using a fully coupled thermo-poroelastic model", Proceedings of the SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, September.
  25. Zare, M.R., Shadizadeh, S.R. and Habibnia, B. (2010), "Mechanical stability analysis of directional wells: a case study in Ahwaz oilfield", Proceedings of the 34th Annual SPE International Conference and Exhibition, Tinapa, Calabar, Nigeria, July-August.
  26. Zhang, J., Yu, M., Al-Bazali, T.M., Ong, S., Chenevert, M.E., Sharma, M.M. and Clark, D.E. (2006), "Maintaining the stability of deviated and horizontal wells: Effects of mechanical, chemical, and thermal phenomena on well designs", Proceedings of the SPE International Oil & Gas Conference and Exhibition, Beijing, China, December.
  27. Zhang, L., Cao, P. and Radha, K.C. (2010), "Evaluation of rock strength criteria for wellbore stability analysis", Int. J. Rock Mech. Min. Sci., 47(8), 1304-1316. https://doi.org/10.1016/j.ijrmms.2010.09.001
  28. Zhu, X., Liu, W. and Zheng, H. (2016), "A fully coupled thermo-poroelastoplasticity analysis of wellbore stability", Geomech. Eng., 10, 437-454. https://doi.org/10.12989/gae.2016.10.4.437

Cited by

  1. Uncertainty assessment of wellbore stability analysis in horizontal sections vol.2, pp.3, 2018, https://doi.org/10.1007/s42452-020-2237-y