Geomechanics and Engineering

  • 제7권5호
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  • Pages.553-567
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  • 2014
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Borehole stability analysis in oil and gas drilling in undrained condition

  • Wei, Jian-Guang (Institute of Petroleum Engineering of Northeast Petroleum University) ;
  • Yan, Chuan-Liang (School of Petroleum Engineering, China University of Petroleum)
  • 투고 : 2014.05.13
  • 심사 : 2014.07.29
  • 발행 : 2014.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

Borehole instability during drilling process occurs frequently when drilling through shale formation. When a borehole is drilled in shale formation, the low permeability leads to an undrained loading condition. The pore pressure in the compressed area near the borehole may be higher than the initial pore pressure. However, the excess pore pressure caused by stress concentration was not considered in traditional borehole stability models. In this study, the calculation model of excess pore pressure induced by drilling was obtained with the introduction of Henkel's excess pore pressure theory. Combined with Mohr-Coulumb strength criterion, the calculation model of collapse pressure of shale in undrained condition is obtained. Furthermore, the variation of excess pore pressure and effective stress on the borehole wall is analyzed, and the influence of Skempton's pore pressure parameter on collapse pressure is also analyzed. The excess pore pressure decreases with the increasing of drilling fluid density; the excess pore pressure and collapse pressure both increase with the increasing of Skempton's pore pressure parameter. The study results provide a reference for determining drilling fluid density when drilling in shale formation.

키워드

참고문헌

  1. Aadnoy, B.S. (2003), "Introduction to special issue on borehole stability", J. Petrol. Sci. Eng., 38(3-4), 79-82. https://doi.org/10.1016/S0920-4105(03)00022-6
  2. Aadnoy, B.S., Rogaland, U. and Chenevert, M.E. (1987), "Stability of highly inclined boreholes", SPE Drill. Eng., 2(4), 364-374. https://doi.org/10.2118/16052-PA
  3. Al-Ajmi, A.M. and Zimmerman, A.W. (2006), "Stability analysis of vertical boreholes using Mogi-Coulomb failure criterion", Int. J. Rock Mech. Mining Sci., 43(8), 1200-1211. https://doi.org/10.1016/j.ijrmms.2006.04.001
  4. Al-Bazali, T., Zhang, J., Chenevert, M.E. and Sharma, M.M. (2008), "Factors controlling the compressive strength and acoustic properties of shales when interacting with water-based fluids", Int. J. Rock Mech. Mining Sci., 45(5), 729-738. https://doi.org/10.1016/j.ijrmms.2007.08.012
  5. Bell, J.S. and Gough, D.I. (1979), "Northeast-southwest compressive stress in Alberta evidence from oil wells", Earth Planet. Sci. Lett., 45(2), 475-482. https://doi.org/10.1016/0012-821X(79)90146-8
  6. Bradley, W.B. (1979), "Failure of inclined borehole", Energy Resour. Tech. Trans., ASME, 101(4), 232-239. https://doi.org/10.1115/1.3446925
  7. Chen, G.Z. (2001), "A study of wellbore stability in shales including poroelastic, chemical, and thermal effects", Ph.D. Dissertation, The University of Texas at Austin, TX, USA.
  8. Chen, G. and Ewy, R.T. (2002), "Investigation of the undrained loading effect and chemical effect on shale stability", SPE/ISRM Rock Mechanics Conference, Irving, TX, USA, October.
  9. Chen, G.Z., Chenevert, M.E., Sharma, M.M. and Yu, M. (2003), "A study of wellbore stability in shales including poroelastic, chemical, and thermal effects", J. Petrol. Sci. Eng., 38(3), 167-176. https://doi.org/10.1016/S0920-4105(03)00030-5
  10. Chen, M., Jin, Y. and Zhang, G.Q. (2008), Petroleum Engineering Related Rock Mechanics, Science Press, Beijing, China.
  11. Chenevert, M.E. (1970), "Shale alteration by water adsorption", J. Petrol. Tech., 22(9), pp. 1141-1148. https://doi.org/10.2118/2401-PA
  12. Chenevert, M.E. and Pernot, V. (1998), "Control of shale swelling pressures using inhibitive water-base muds", Proceedings of the 67th SPE Annual Technical Conference and Exhibition, New Orleans, LA, USA, September, pp. 27-30.
  13. Coelho, L.C., Soares, A.C., Ebecken, N.F.F., Alves, J.L.D. and Landau, L. (2005), "The impact of constitutive modeling of porous rocks on 2-D wellbore stability analysis", J. Petrol. Sci. Eng., 46(1-2), 81-100. https://doi.org/10.1016/j.petrol.2004.08.004
  14. Cui, L., Abousleiman, Y. and Cheng, A.H.D. (1999), "Time-dependent failure analysis of inclined boreholes in fluid-saturated formations", J. Energy Resour., ASME, 121(1), 31-39. https://doi.org/10.1115/1.2795057
  15. Detournay, E. and Cheng, A.H.D. (1993), Fundamentals of Poroelasticity, Pergamon Press, Oxford, UK, pp. 113-171.
  16. Ewy, R.T. and Cook, N.G.W. (1990), "Deformation and fracture around cylindrical openings in rock-I. Observations and analysis of deformation", Int. J. Rock Mech. Mining Sci., 27(5), 387-407. https://doi.org/10.1016/0148-9062(90)92713-O
  17. Fjaer, E., Holt, R.M., Horsrud, P., Raaen, A.M. and Risnes, R. (2008), Petroleum Related Rock Mechanics, (2nd Edition), Elsevier, Amsterdam, The Netherlands; Kidlington, Oxford, UK.
  18. Gong, X.N. (1996), Advanced Soil Mechanics, Zhejiang University Press, Zhejiang, China.
  19. Haimson, B.C. and Chang, C. (2002), "True triaxial strength of the KTB amphibolite under borehole wall conditions and its use to estimate the maximum horizontal in situ stress", J. Geophys. Res.: Solid Earth, 107(B10), (ETG-15)1-14.
  20. Hale, A.H. and Mody, F.K. (1992), "Experimental investigation of the influence of chemical potential on wellbore stability", SPE/IADC Drilling Conference, New Orleans, LA, USA, February.
  21. Henkel, D.J. (1960), "The shear strength of saturated remolded clays", Research Conference on Shear Strength of Cohesive Soils, Boulder, CO, USA, June, pp. 533-554.
  22. Hu, Z.X. (1997), Soil Mechanics and Environment Soil Engineering, Tongji University Press, Shanghai, China.
  23. Lu, J. and Tang, W. (2000), "On deep wellbore stability for dagang oil field", Chinese J. Rock Mech. Eng., 19, pp. 967-970.
  24. Mody, F.K. and Hale, A.H. (1993), "Borehole-stability model to couple the mechanics and chemistry of drilling-fluid/shale interactions", J. Petrol. Tech., 45(11), 1093-1101. https://doi.org/10.2118/25728-PA
  25. Morita, N., Whitfill, D.L., Fedde, O.P. and Lovik, T.H. (1989), "Parametric study of sand production prediction: Analytical approach", SPE Product. Eng., 4(1), 25-33. https://doi.org/10.2118/16990-PA
  26. Narayanasamy, R., Barr, D. and Milne, A. (2009), "Wellbore instability predictions within the cretaceous mudstones", Offshore Europe, Aberdeen, UK, September.
  27. Risnes, R. and Bratli, R.K. (1981), "Sand stresses around a wellbore", Proceedings of SPE Middle East Oil Tech Conference, Manama, Bahrain, March.
  28. Roegiers, J.C. (2002), "Well modelling: An overview", Oil Gas Sci. Tech., 57(5), 569-577. https://doi.org/10.2516/ogst:2002038
  29. Roshan, H. and Fahad, M. (2012), "Chemo-poroplastic analysis of a borehole drilled in a naturally fractured chemically active formation", Int. J. Rock Mech. Mining Sci., 52, 82-91. https://doi.org/10.1016/j.ijrmms.2012.03.004
  30. Santarelli, F.J., Brown, E.T. and Maury, V. (1986), "Analysis of borehole stresses using pressure dependent, linear elasticity", Int. J. Rock Mech. Mining Sci., 23(6), 445-449. https://doi.org/10.1016/0148-9062(86)92310-7
  31. Simpson, J.P. and Dearing, H.L. (1989), "Downhole simulation cell shows unexpected effects of shale hydration on borehole wall", SPE Drill. Eng., 4(1), 24-30. https://doi.org/10.2118/17202-PA
  32. Skempton, A.W. (1954), "The pore-pressure coefficients A and B", Geotechnique, 4(4), 143-147. https://doi.org/10.1680/geot.1954.4.4.143
  33. Sone, H. and Zoback, M.D. (2013), "Mechanical properties of shale-gas reservoir rocks-Part 1: Static and dynamic elastic properties and anisotropy", Geophysics, 78(5), D381-D392. https://doi.org/10.1190/geo2013-0050.1
  34. Tan, C.P., Rahman, S.S., Richards, B.G. and Mody, F.K. (1998), "Integrated rock mechanics and drilling fluid design approach to manage shale instability", EUROCK 98. Symposium, Trondheim, Norway, July.
  35. Tan, C.P., Amanullah, M., Mody, F.K. and Tare, U.A. (2002), "Novel high membrane efficiency water-based drilling fluids for alleviating problems in troublesome shale formations", IADC/SPE Asia Pacific Drilling Technology, Jakarta, Indonesia, September.
  36. Van Oort, E., Hale, A.H. and Mody, F.K. (1995), "Manipulation of coupled osmotic flows for stabilization of shales exposed to water-based drilling fluids", 1995 SPE Annual Technical Conference and Exhibition, Dallas, TX, USA, October.
  37. Yan, C., Deng, J., Hu, L. and Yu, B. (2013a), "Fracturing pressure of shallow sediment in deep water drilling", Math. Problems Eng., 2013, 8 p.
  38. Yan, C., Deng, J. and Yu, B. (2013b), "Wellbore stability in oil and gas drilling with chemical-mechanical coupling", Sci. World J., 2013, 9 p.
  39. Yan, C., Deng, J., Hu, L., Yu, B., Chen, Z.J., Yan, X.J., Lin, H., Tan, Q. and Yu, B.H. (2014), "Brittle failure of shale under uniaxial compression", Arabian J. Geosci., pp.1-9.
  40. Zhang, J.C., Lang, J. and Standifird, W. (2009), "Stress, porosity, and failure-dependent compressional and shear velocity ratio and its application to wellbore stability", J. Petrol. Sci. Eng., 69(3-4), 193-202. https://doi.org/10.1016/j.petrol.2009.08.012
  41. Zeynali, M.E. (2012), "Mechanical and physical-chemical aspects of wellbore stability during drilling operations", J. Petrol. Sci. Eng., 82-83, 120-124. https://doi.org/10.1016/j.petrol.2012.01.006
  42. Zhu, H.Y., Deng, J.G., Xie, Y.H., Huang, K.W., Zhao, J.Y. and Yu, B.H. (2012), "Rock mechanics characteristic of complex formation and faster drilling techniques in Western South China Sea oilfields", Ocean Eng., 4, 33-43.
  43. Zhu, H.Y., Deng, J.G. and Liu, Q.Y. (2014), "Hydraulic fracturing experiments of highly deviated well with oriented perforation technique", Geomech. Eng., Int. J., 6(2), 153-172. https://doi.org/10.12989/gae.2014.6.2.153
  44. Zoback, M.D., Moos, D., Mastin, L. and Anderson, R.N. (1985), "Well bore breakouts and in situ stress", J. Geophys. Res.: Solid Earth, 90(B7), 5523-5530. https://doi.org/10.1029/JB090iB07p05523
  45. Zoback, M.D., Barton, C.A., Brudy, M., Castillo, D.A., Finkbeiner, T., Grollimund, B.R., Moos, D.B., Peska, P., Ward, C.D. and Wiprut, D.J. (2003), "Determination of stress magnitude and orientation in deep wells", Int. J. Rock Mech. Mining Sci., 40(7-8), 1049-1076. https://doi.org/10.1016/j.ijrmms.2003.07.001

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