Research Papers: Petroleum Engineering

Borehole Stability Analysis in Deepwater Shallow Sediments

[+] Author and Article Information
Yan Chuanliang

School of Petroleum Engineering,
China University of Petroleum, Huadong,
Qingdao 266580, China;
State Key Laboratory of Petroleum Resources and Prospecting,
China University of Petroleum,
Beijing 102249, China
e-mail: yanchuanliang@163.com

Deng Jingen, Li Xiaorong

State Key Laboratory of Petroleum Resources and Prospecting,
China University of Petroleum,
Beijing 102249, China

Lai Xiangdong

Drilling Engineering Technology Research Institute,
CNPC Chuanqing Drilling Engineering Co., Ltd.
Guanghan 618300, China

Feng Yongcun

The University of Texas at Austin,
Austin, TX 78741

1Corresponding author.

Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received April 23, 2013; final manuscript received April 12, 2014; published online July 9, 2014. Assoc. Editor: G. Robello Samuel.

J. Energy Resour. Technol 137(1), 012901 (Jul 09, 2014) (7 pages) Paper No: JERT-13-1136; doi: 10.1115/1.4027564 History: Received April 23, 2013; Revised April 12, 2014

Deepwater shallow sediment is less-consolidated, with a rock mechanical behavior similar to saturated soil. It is prone to borehole shrinkage and downhole leakage. Assume the deepwater shallow sediments are homogeneous, isotropic, and ideally elastoplastic materials, and formation around the borehole is divided into elastic and plastic zone. The theories of small deformation and large deformation are, respectively, adopted in the elastic and plastic zone. In the plastic zone, Mohr–Coulomb strength criterion is selected. The stress and deformation distributions in these two zones, and the radius of plastic zone are derived. The collapse pressure calculation formula of deepwater shallow sediments under the control of different shrinkage rates is obtained. With the introduction of excess pore pressure theory in soil mechanics, the distribution rule of excess pore pressure in these two zones is obtained. Combined with hydraulic fracturing theory, the fracture mechanism of shallow sediments is analyzed and the theoretical formula of fracture pressure is given. The calculation results are quite close to the practically measured results. So the reliability of the theory is confirmed.

Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.


Shelton, J., Smith, J. R., and Gupta, A., 2011, “Experimental Evaluation of Separation Methods for a Riser Dilution Approach to Dual Density Drilling,” ASME J. Energy Resour. Technol., 133(3), p. 031501. [CrossRef]
Yu, B. H., Yan, C. L., Deng, J. G., Liu, S. J., Tan, Q., and Xiao, K., 2011, “Evaluation and Application of Wellbore Stability in Deep Water,” Drill. Prod. Technol., 33(6), pp. 1–4. [CrossRef]
Nes, O. M., Kristiansen, T. G., Horsrud, P., Fjær, E., and Tronvoll, J., 2012, “Drilling Time Reduction Through an Integrated Rock Mechanics Analysis,” ASME J. Energy Resour. Technol., 134(3), p. 032802. [CrossRef]
Dodson, J., Dodson, T., and Schmidt, V., 2004, “Gulf of Mexico ‘Trouble Time’ Creates Major Drilling Expenses: Use of Cost-Effective Technologies Needed,” Offshore, 64(1), pp. 46–48.
Rocha, L. A. S., Junqueira, P., and Roque, J. L., 2003, “Overcoming Deep and Ultra Deepwater Drilling Challenges,” Offshore Technology Conference, Houston, TX, Paper No. OTC 15233. [CrossRef]
Bradley, W. B., 1979, “Failure in Inclined Boreholes,” ASME J. Energy Resour. Technol., 101(4), pp. 232–239. [CrossRef]
Cui, L., Abousleiman, Y., Cheng, A. H. D., and Roegiers, J.-C., 1999, “Time-Dependent Failure Analysis of Inclined Boreholes in Fluid-Saturated Formation,” ASME J. Energy Resour. Technol., 121(1), pp. 31–39. [CrossRef]
Al-Ajmi, A. M., and Al-Harthy, M. H., 2010, “Probabilistic Wellbore Collapse Analysis,” J. Pet. Sci. Eng., 74(3–4), pp. 171–177. [CrossRef]
Risnes, R., and Bratli, R. K., 1981, “Sand Stresses Around a Wellbore,” Proceedings of the Middle East Oil Technical Conference on Society of Petroleum Engineers, Manama, Bahrain, Paper No. SPE 9650. [CrossRef]
Aadnoy, B. S., and Belayneh, M., 2004, “Elasto-Plastic Fracturing Model for Wellbore Stability Using Non-Penetrating Fluids,” J. Pet. Sci. Eng., 45(3–4), pp. 179–192. [CrossRef]
Willson, S. M., Edwards, S. T., Crook, A. J., Bere, A., Moos, D., and Peska, P., 2007, “Assuring Stability in Extended Reach Wells-Analyses, Practices and Mitigations,” SPE/IADC Drilling Conference, Amsterdam, The Netherlands, Paper No. SPE 105405. [CrossRef]
Ajienka, J., Egbon, F., and Onwuemena, U., 2009, “Deep Offshore Fracture Pressure Prediction in the Niger Delta—A New Approach,” Nigeria Annual International Conference and Exhibition, Abuja, Nigeria, Paper No. SPE 128339. [CrossRef]
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,” SPE/IADC Drilling Conference and Exhibition, Amsterdam, The Netherlands, Paper No. SPE/IADC 139708. [CrossRef]
Wojtanowicz, A. K., Bourgoyne, A. T., Zhou, D., and Bender, K., 2000, “Strength and Fracture Gradients for Shallow Marine Sediments,” U.S. Department of Interior Mineral Management Service, Final Report.
Yu, B. H., Yan, C. L., Deng, J. G., Zhou, J. L., Liu, S. J., Xing, X. J., and Tan, Q., 2012, “Study and Application of Calculation Model of Safe Drilling Fluid Density Window,” China Offshore Oil Gas, 24(2), pp. 58–60. [CrossRef]
Kaarstad, E., and Aadnoy, B. S., 2008, “Improved Prediction of Shallow Sediment Fracturing for Offshore Applications,” SPE Drill. Completion, 23(2), pp. 88–92. [CrossRef]
Gong, X. N., 2011, “Some Problems Concerning Shear Strength of Soil in Soft Clay Ground,” Chin. J. Geotech. Eng., 33(10), pp. 1596–1600.
Zhou, D., and Wojtanowicz, A. K., 2002, “Analysis of Leak-Off Tests in Shallow Marine Sediments,” ASME J. Energy Resour. Technol., 124(4), pp. 231–238. [CrossRef]
Hu, Z. X., 1997, Soil Mechanics and Environment Soil Engineering, Tongji University Press, Shanghai, China.
Wen, X. G., Zhang, X., and Zhou, J., 2010, “Influencing Factors About Pore Pressure Generated for Clay Under Complex Stress Path,” Chin. J. Geotech. Eng., 32(11), pp. 1709–1716.
Skempton, A. W., 1954, “The Pore-Pressure Coefficients A and B,” Géotechnique, 4(4), pp. 143–147. [CrossRef]
Qian, J. H., and Yin, Z. Z., 1994, Geotechnical Principles and Calculation, 2nd ed., China Water Resource and Hydropower Press, Beijing, China.
Henkel, D. J., 1959, “The Relationship Between the Strength, Pore Waterpressure and Volume Change Characteristics of Saturated Clays,” Géotechnique, 9, pp. 119–135. [CrossRef]
Fjær, E., Holt, R. M., Horsrud, P., Raaen, A. M., and Risnes, R., 2008, Petroleum Related Rock Mechanics, 2nd ed., Elsevier, Amsterdam, The Netherlands.
Ewy, R. T., 1993, “Yield and Closure of Directional and Horizontal Wells,” Int. J. Rock Mech. Min. Sci., 30(7), pp. 1061–1067. [CrossRef]


Grahic Jump Location
Fig. 1

The mechanical model of a borehole

Grahic Jump Location
Fig. 2

Variation of borehole shrinkage rate with the borehole pressure

Grahic Jump Location
Fig. 4

Excess pore pressure around the borehole

Grahic Jump Location
Fig. 5

Effective stress around the borehole

Grahic Jump Location
Fig. 3

Total stress around the borehole



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In