FE Simulation of Torque and Drag inside Borehole of Oil and Gas Wells (Part II)

Abstract:

The wellbore friction, torque and drag, between drill string and the wellbore wall is the most important issue which limits the drilling industry to go beyond a certain measured depth.The calculation and analysis of torque and drag were considered to be very important in drilling and well design. A variety of models (soft, stiffness, mixed and finite element) have been used to determine the torque and drag. A FEA (Finite Element Analysis) model of the drill string to simulate it’s working behavior, involving contacts between the drillstring and borehole wall was developed, this FE Model was to be compared with computational model of torque and drag, and to be verified with experimental results.The drillstring displacements calculated by the FEA model matches those from commercial software in petroleum industry (Landmark). The model developed and discussed in this paper can be used for predicting torque and drag inside wellbores of oil and gas wells, and it will also benefit in preplanning simulation of oil and gas well drilling operations.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 240-245
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.240
• Online since: January 2015
• Authors: Yousif E.A. Bagadi*, De Li Gao, Abdelwahab M. Fadol
• Keywords: Drag and Torque Prediction, Drillstring FEM, Experimental Verification

References

[1] G. Robello Samuel: Formulas and Calculations for Drilling Operations,; Scrivener Publishing Wiley, (2010).

[2] Adewuya, O. A., & Pham, S. V. (1998).

[3] Bueno, R. C. S., & Morooka, C. K. (1994).

[4] Ho, H. S. (1988).

[5] Maehs, J., Renne, S., Logan, B., & Diaz, N. (2010).

[6] Aadnoy, B. S., Fazaelizadeh, M., & Hareland, G. (2010). 3D Analytical Model for Wellbore Friction. Journal of Canadian Petroleum Technology, 49(10), 25-36.

DOI: 10.2118/141515-pa

[7] Mitchell, R. F., & Samuel, R. (2009). How Good Is the Torque/Drag Model? SPE Drilling & Completion, 62-71. SPE105068. http: /dx. doi. org/10. 2523/105068-MS.

DOI: 10.2118/105068-pa

[8] Newman, K. R., & Procter, R. (2009).

[9] Yang, D., Rahman, M. K., & Chen, Y. (2008). Bottom hole assembly analysis by finite difference differential method. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERIN. 74, 1495–1517. http: /dx. doi. org/10. 1002/nme. 2221.

DOI: 10.1002/nme.2221

[10] Ritto, T. G., Soize, C., & Sampaio, R. (2009).

[11] Sheppard, M. C., Wick, C., & Burgess, T. (1987). Designing Well Paths to Reduce Drag and Torque. SPE Drilling Engineering, 2(4), 344-350. SPE15463-PA.

DOI: 10.2118/15463-pa

[12] Bueno, R. C. S., & Morooka, C. K. (1994).

[13] Johancsik, C. A., Friesen, D. B. and Dawson, R., Torque and Drag in Directional Wells-Prediction and Measurement, Journal of Petroleum Technology, June (1984).

DOI: 10.2118/11380-pa

[14] Deli Gao, Lian zhong Sun, Hong shu Wei and Shun wen Wang, On improving the Accuracy of Prediction of the Down-hole Drag & Torque in Extended Reach Drilling (ERD), Modeling and Simulation in Drilling and Completion for Oil and Gas, China University of Petroleum (Beijing), Published by: Tech Science Press (2012).

[15] Mohammad Fazaelizadeh, Real Time Torque and Drag Analysis during Directional drilling, a Ph. D Thesis presented at University Of Calgary, March, (2013).