Mechanical Analysis of Drill String Drag and Torque With the Condition of Irregular Borehole
Abstract
With the rapid development of drilling technology, air drilling technology and large displacement well, and horizontal well drilling technology are also known as the main directions of the future drilling development. Compared with conventional drilling mode, air drilling is particular, such as drilling fluid with low density, poor lubrication, large friction coefficient between the drill string and borehole, irregular borehole, well trajectory control difficulty, and so on. Along with the change of drilling condition, the stress of drill string is also changed. However, irregular borehole has a direct impact on the fatigue failure and the stress of drill string. Therefore, it is necessary to analyze drill string stress and influence factors in irregular hole. Based on the previous studies, application of drill string mechanics and statistical regression methods is used to study drill string drag and torque, and it can predict the drilling string stress state with the hole enlargement rate, meanwhile, it also provides a theoretical basis for gas drilling and complex drilling
technology.
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Guo, Y. F., & Bai, Y. C. (2001). The research status and prospect of drag at home and abroad. Foreign Oilfield Engineering, 17(8), 31-33.
Zhou, Y. C., & Zhai, H. J. (2003). Underbalanced drilling technology and application. Beijing: Petroleum Industry Press.
Tang, B. (2001). Gas drilling string friction research and application. Southwest Petroleum Institute Dissertation.
Menand, S., Sellami, H., & Bouguecha, A., et al. (n.d.). Axial force transfer of buckled drill pipe in deviated wells. SPE119861.
Johansick, C. A. (1984). Torque and drag in direction wells prediction and measurement. Journal of Petroleum Technology, 36(6), 987-992.
Lubinski, A., & Woods, H. B. (1953). Factors affecting the angle of inclination and dog-legging in rotary Bore Holes. Drilling and Production Practice, 222-250.
Li, Z. F., & Liu, X. S. (1992). Horizontal well drilling string steady state tension-torque model and its application. Petroleum Drilling Techniques, 20(4), 1-6.
Yan, T., Zhang, J. Q., & Sun, X. Z., et al. (1995). Analysis of drillstring frictional drag in horizontal wells of Daqing. Journal of Daqing Petroleum Institute, 19(2), 1-5.
An, H., Scott, S. L., & Langlinais, J. P. (2000). Estimation bottom hole pressure in pumping oil wells: Effect of high viscosity fluids and casinghead pressure. Dallas: SPE Annual Technical Conference and Exhibition.
Li, Z. F. (2008). Tubular mechanics in oil-gas wells and its applications. Beijing: Petroleum Industry Press.
Lin, T. J., Lian, Z. H., & Zhang, J. L. (2011). Comparative study on dynamics behaviors of the full drilstring between gas drilling and mud. Journal of Southwest Petroleum Universty (Science & Technology Edition), 33(1), 139-142.
DOI: http://dx.doi.org/10.3968/10177
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