Wellbore-Stability Analysis Considering the Weak Bedding Planes Effect: A Case Study
- Amin Mehrabian (Pennsylvania State University) | Arturo Diaz Pérez (Halliburton) | Claudia Santana (Halliburton)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- December 2018
- Document Type
- Journal Paper
- 377 - 384
- 2018.Society of Petroleum Engineers
- wellbore stability, weak bedding plane, mud weight
- 23 in the last 30 days
- 200 since 2007
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Wellbore stability in shale is often hampered by the detrimental effect of existing weak bedding planes on shear failure of the rock surrounding the borehole. This paper presents results from an analytical solution to the wellbore-stress problem that incorporates rock failure along weak bedding planes. The solution is used for the case study of a highly inclined well section in a laminated layer of troublesome shale with a strike-slip faulting regime above the target formation in Latin America. Findings indicate improvement in the estimated margin for the wellbore-breakout limit of drilling-fluid density, and, more prominently, the safest drilling direction by accounting for the presence of weak bedding planes in the related wellbore-stability analysis.
|File Size||603 KB||Number of Pages||8|
Aadnoy B. S. 1988. Modeling of the Stability of Highly Inclined Boreholes in Anisotropic Rock Formations. SPE Drill Eng 3 (3): 259–268. SPE-16526-PA. https://doi.org/10.2118/16526-PA.
Aadnoy, B., Hareland, G., Kustamsi, A. et al. 2009. Borehole Failure Related to Bedding Plane. Presented at the 43rd US Rock Mechanics Symposium and 4th US–Canada Rock Mechanics Symposium. American Rock Mechanics Association, 28 June–1 July, Asheville, North Carolina. ARMA 09-106.
Barton, C. A., Moos, D., Peska, P. et al. 1997. Utilizing Wellbore-Image Data To Determine the Complete Stress Tensor: Application to Permeability Anisotropy and Wellbore Stability. The Log Analyst 38 (6): 21–33. SPWLA-1997-v38n6a1.
Bradley, W. B. 1979. Failure of Inclined Boreholes. Journal of Energy Resources Technology 101 (4): 232–239. https://doi.org/10.1115/1.3446925.
Daneshy, A. A. 1973. A Study of Inclined Hydraulic Fractures. SPE J. 13 (2): 61–68. SPE-4062-PA. https://doi.org/10.2118/4062-PA.
Duveau, G. and Shao, J. F. 1998. A Modified Single Plane of Weakness Theory for the Failure of Highly Stratified Rocks. International Journal of Rock Mechanics and Mining Sciences 35 (6): 807–813. https://doi.org/10.1016/S0148-9062(98)00013-8.
Edwards, S., Matsutsuyu, B., and Willson, S. 2004. Imaging Unstable Wellbores While Drilling. SPE Drill & Compl 19 (4): 236–243. SPE-79846-PA. https://doi.org/10.2118/79846-PA.
Ewy, R. T. 1999. Wellbore-Stability Predictions by Use of a Modified Lade Criterion. SPE Drill & Compl 14 (2): 851–891. SPE-56862-PA. https://doi.org/10.2118/56862-PA
Fjær, E., Holt, R. M., and Raaen, A. M. 2008. Petroleum-Related Rock Mechanics, Vol. 53. Amsterdam: Elsevier.
Germanovich, L. N. and Dyskin., A. V. 2000. Fracture Mechanisms and Instability of Openings in Compression. International Journal of Rock Mechanics and Mining Sciences 37 (1): 263–284. https://doi.org/10.1016/S1365-1609(99)00105-7.
Hiramatsu, Y. and Oka, Y. 1968. Determination of the Stress in Rock Unaffected by Boreholes or Drifts, From Measured Strains or Deformations. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 5 (4): 337–353. https://doi.org/10.1016/0148-9062(68)90005-3.
International Society of Rock Mechanics (ISRM). 1979. Suggested Method for Determining the Uniaxial Compressive Strength and Deformability of Rock Materials.
Jaeger, J. C., Cook, N. G., and Zimmerman, R. 2009. Fundamentals of Rock Mechanics. Hoboken, New Jersey: John Wiley & Sons.
Lang, J., Li, S., and Zhang, J. 2011. Wellbore-Stability Modeling and Real-Time Surveillance for Deepwater Drilling to Weak-Bedding Planes and Depleted Reservoirs. Presented at the SPE/IADC Drilling Conference and Exhibition, Amsterdam, 1–3 March. SPE-139708-MS. https://doi.org/10.2118/139708-MS.
Lee, H., Ong, S. H., Azeemuddin, M. et al. 2012. A Wellbore-Stability Model for Formations With Anisotropic Rock Strengths. Journal of Petroleum Science and Engineering 96: 109–119. https://doi.org/10.1016/j.petrol.2012.08.010.
Liang, C., Chen, M., Jin, Y. et al. 2014. Wellbore-Stability Model for Shale-Gas Reservoir Considering the Coupling of Multi-Weakness Planes and Porous Flow. Journal of Natural Gas Science and Engineering 21: 364–378. https://doi.org/10.1016/j.jngse.2014.08.025.
Malvern, L. E. 1969. Introduction to Continuum Mechanics. Engle Cliffs, New Jersey: Prentice Hall Inc.
McLamore, R. T. Jr. and Gray, K. E. 1967. A Strength Criterion for Anisotropic Rocks Based on Experimental Observations. Presented at the Annual Meeting of the American Institute of Mining, Metallurgical, and Petroleum Engineers, Los Angeles, California, 19–23 February. SPE-1721-MS. https://doi.org/10.2118/1721-MS.
McLean, M. R. and Addis, M. A. 1990. Wellbore Stability: The Effect of Strength Criteria on Mud-Weight Recommendations. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 23–26 September. SPE-20405-MS. https://doi.org/10.2118/20405-MS.
Mehrabian, A., Perez, A. D., and Santana, C. 2018. Wellbore-Stability Solution Incorporating the Weak-Bedding Planes Effect With Field-Case Study. Presented at the IADC/SPE Drilling Conference and Exhibition, FortWorth, Texas, 6–8 March. SPE-189593-MS. https://doi.org/10.2118/189593-MS.
Meier, T., Rybacki, E., Backers, T. et al. 2015. Influence of Bedding Angle on Borehole Stability: A Laboratory Investigation of Transverse Isotropic Oil Shale. Rock Mechanics and Rock Engineering 48 (4): 1535–1546. https://doi.org/10.1007/s00603-014-0654-1.
Mody, F. K. and Hale, A. H. 1993. Borehole-Stability Model to Couple the Mechanics and Page Chemistry of Drilling-Fluid/Shale Interactions. J Pet Technol 45 (11): 1093-1101. SPE-25728-PA. https://doi.org/10.2118/25728-PA.
Ong, S. H. and Roegiers, J-C. 1993. Influence of Anisotropies in Borehole Stability. International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts 30 (7): 1069–1075. https://doi.org/10.1016/0148-9062(93)90073-M.
Shen, X., Bai, M. and Standifird, W. 2012. Drilling and Completion in Petroleum Engineering: Theory and Numerical Applications. London: Taylor & Francis.
Wang, H. F. 2000. Theory of Linear Poroelasticity With Applications to Geomechanics and Hydrogeology. Princeton, New Jersey: Princeton University Press.
Willson, S. M., Last, N. C., Zoback, M. D. et al. 1999. Drilling in South America: A Wellbore-Stability Approach for Complex Geologic Conditions. Presented at the Latin American and Caribbean Petroleum Engineering Conference, Caracas, Venezuela, 21–23 April. SPE-53940-MS. https://doi.org/10.2118/53940-MS.
Wu, B. and Tan, C. P. 2010. Effect of Shale Bedding Plane Failure on Wellbore-Stability Example From Analyzing Stuck-Pipe Wells. Presented at the 44th US Rock Mechanics Symposium and 5th US–Canada Rock Mechanics Symposium, Salt Lake City, Utah, 27–30 June. ARMA-10-350.
Yamamoto, K., Waragai, T., and Kikuchi, S. 2004. Historical Review and Rock Mechanics Approach To Improve the Wellbore Stability in Nahr Umr Shale Formation. Presented at the Abu Dhabi International Conference and Exhibition, Abu Dhabi, 10–13 October. SPE-88782-MS. https://doi.org/10.2118/88782-MS.
Zhang, J. 2013. Borehole-Stability Analysis Accounting for Anisotropies in Drilling to Weak-Bedding Planes. International Journal of Rock Mechanics and Mining Sciences 60: 160–170. https://doi.org/10.1016/j.ijrmms.2012.12.025.
Zoback, M. D. 2010. Reservoir Geomechanics. Cambridge, United Kingdom: Cambridge University Press.