Steel and Composite Structures

  • 제44권2호
  • /
  • Pages.199-210
  • /
  • 2022
  • /
  • 1229-9367(pISSN)
  • /
  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Mechanical behavior of coiled tubing over wellhead and analysis of its effect on downhole buckling

  • Zhao, Le (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University) ;
  • Gao, Mingzhong (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University) ;
  • Li, Cunbao (Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University) ;
  • Xian, Linyun (Shanxi Province Key Laboratory of High Performance Coiled Tubing)
  • 투고 : 2021.08.29
  • 심사 : 2022.07.01
  • 발행 : 2022.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study build finite element analysis (FEA) models describing the bending events of coiled tubing (CT) at the wellhead and trips into the hole, accurately provide the state of stress and strain while the CT is in service. The bending moment and axial force history curves are used as loads and boundary conditions in the diametrical growth models to ensure consistency with the actual working conditions in field operations. The simulation diametrical growth results in this study are more accurate and reasonable. Analysis the factors influencing fatigue and diametrical growth shows that the internal pressure has a first-order influence on fatigue, followed by the radius of the guide arch, reel and the CT diameter. As the number of trip cycles increase, fatigue damage, residual stress and strain cumulatively increase, until CT failure occurs. Significant residual stresses remain in the CT cross-section, and the CT exhibits a residual curvature, the initial residual bending configuration of CT under wellbore constraints, after running into the hole, is sinusoidal. The residual stresses and residual bending configuration significantly decrease the buckling load, making the buckling and buckling release of CT in the downhole an elastic-plastic process, exacerbating the helical lockup. The conclusions drawn in this study will improve CT models and contribute to the operational and economic success of CT services.

키워드

과제정보

This project has been supported by the project of Key Laboratory of Deep Earth Science and Engineering (Sichuan University, DESE 202105), Natural Science Foundation of China (No. 51827901). In addition, support from the Shanxi Province Key Laboratory of High Performance Coiled Tubing is gratefully acknowledged.

참고문헌

  1. Abaqus 2020 (2020), Abaqus, Dassault Systemes; Velizy-Villacoublay, France.
  2. Aitken, B., Livescu, S. and Craig, S. (2019), "Coiled tubing software models and field applications - A review", J. Petroleum Sci. Eng., 182, 106308. https://doi.org/10.1016/j.petrol.2019.106308.
  3. API RP 5C8 (2017), Care, maintenance, and inspection of coiled tubing, API; Washington, DC, USA.
  4. Castro, L., Craig, S., Micheli, R. and Livescu, S. (2015), "Overcoming extended-reach challenges for annular fracturing", SPE J., 30(3), 195-204. https://doi.org/10.2118/173683-PA.
  5. Carpenter, C. (2018), "Underbalanced drilling with coiled tubing in marginal shallow wells", J. Petroleum Technol., 70(6), 50-52. http://dx.doi.org/10.2118/0618-0050-JPT.
  6. Gao, D. and Huang, W. (2015), "A review on down-hole tubular string buckling in well engineering", Pet. Sci., 12(3), 443-457. https://doi.org/10.1007/s12182-015-0031-z.
  7. Huang, W., Gao,, D. and Liu Y. (2018), "Buckling analysis of tubular strings with connectors constrained in vertical and inclined wellbores", SPE J., 23(2), 301-327. https://doi.org/10.2118/180613-PA.
  8. Huang, W. and Gao, D. (2019), "Combined effects of wellbore curvature, connector, and friction force on tubular buckling behaviors", SPE J., 24(5), 2083-2096. https://doi.org/10.2118/195680-PA.
  9. Kamyab, M. and Rasouli, V. (2016), "Experimental and numerical simulation of cuttings transportation in coiled tubing drilling", J. Natural Gas Sci. Eng., 29, 284-302. https://doi.org/10.1016/j.jngse.2015.11.022.
  10. Kim, S.E. and Vu, Q.V. (2020), "Effect of residual stress and geometric imperfection on the strength of steel box girders", Steel Compos. Struct., 34(3), 423-440. http://dx.doi.org/10.12989/scs.2020.34.3.423.
  11. Kim, S.E., Choi, J.H., Pham, T.H., Truong, V.H. and Vu, Q.V. (2020), "Behavior of composite CFST beam concrete column joints", Steel Compos. Struct., 37(1), 75-90. http://dx.doi.org/10.12989/scs.2020.37.1.075.
  12. Leontiev, D.S., Kleshchenko, I.I., Shalyapina, A.D. and Mansurova, M.M. (2021), "Technology of water shut-off treatment in the gas well using coiled tubing", Oil Gas Studies, 6, 75-85. https://doi.org/10.31660/0445-0108-2020-6-75-85.
  13. Liljenhjerte, J. and Nygaard, J.V. (2021), "Evaluating stabilizing initiatives to extend coiled tubing reach", J. Petroleum Sci. Eng., 205(10), 108905. https://doi.org/10.1016/j.petrol.2021.108905.
  14. Liu, S., Zhou, H., Xiao, H. and Gan, Q.Q. (2021), "A new theoretical model of low cycle fatigue life for coiled tubing under coupling load", Eng. Failure Analysis, 124(9), 105365. https://doi.org/10.1016/j.engfailanal.2021.105365.,
  15. Livescu S., Craig, S. and Aitken, B. (2017), "Fluid-Hammer effects on coiled-tubing friction in extended-reach wells", SPE J., 22(1), 365-373. https://doi.org/10.2118/179100-PA.
  16. Lubinski, A. and Althouse, W.S. (1962), "Helical buckling of tubing sealed in packers", J. Pet. Technol., 14(6), 655-670. https://doi.org/10.2118/178-PA.
  17. Miller, J., Su, T., Dv, E., Pabon, J. and Wicks, N., Bertoldi, K. and Reis, P. (2015), "Buckling-induced lock-up of a slender rod injected into a horizontal cylinder", J. Solids Struct., 72(15), 153-164. https://doi.org/10.1016/j.ijsolstr.2015.07.025.
  18. Naghipour, M., Niak, K.M., Shariati, M. and Toghroli, A. (2020), "Effect of progressive shear punch of a foundation on a reinforced concrete building behavior", Steel Compos. Struct., 35(2), 279-294. http://dx.doi.org/10.12989/scs.2020.35.2.279.
  19. Newman, K., Kelleher, P.E. and Smalley, E. (2014), "Extended Reach: Can We Reach Farther?", SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, The Woodlands, Texas, USA, March. https://doi.org/10.2118/168235-MS
  20. Newman, K. and Kelleher, P. (2016), "CT Fatigue Modeling Update", SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, Houston, Texas, USA, March. https://doi.org/10.2118/179049-MS.
  21. Qin, X. and Gao, D.L. (2016), "The effect of residual bending on coiled tubing buckling behavior in a horizontal well", J. Natural Gas Sci. Eng., 30, 182-194. https://doi.org/10.1016/j.jngse.2016.02.016.
  22. Wu, J., Hans, C. and Juvkam, W. (1995), "Coiled tubing buckling implication in drilling and completing horizontal wells", SPE J., 10(1), 16-21. https://doi.org/10.2118/26336-PA.
  23. Zub, C., Stratan, A. and Dan, D. (2020), "Prequalification of a set of buckling restrained braces: Part II - numerical simulations", Steel Compos. Struct., 34(4), 561-580. http://dx.doi.org/10.12989/scs.2020.34.4.561.
  24. Zhao, G.H., Zhong, J.J., Feng, C. and Liang, Z. (2020), "Simulation of ultra-low cycle fatigue cracking of coiled tubing steel based on cohesive zone model", Eng. Fracture Mech., 107201. https://doi.org/10.1016/j.engfracmech.2020.107201.
  25. Zhao, L., Zhang, H., Duan, Q. and Tang, G. (2019), "Failure analysis of large-diameter coiled tubing based on diameter growth", Pressure Vessel Technol., 142(3), 031301. https://doi.org/10.1115/1.4045511.
  26. Zhao, L., Zhang, H., Duan, Q.Q. and Long, X.T. (2021), "Initial residual curvature configuration of coiled tubing and analysis of the effect on downhole buckling behavior", SPE J., 26(06), 3374-3388. https://doi.org/10.2118/204233-PA.
  27. Zhang, H., Wu, K., Liu, X.B., Yang, Y., Sui, Y.L. and Zhang, Z.Y. (2020), "Numerical simulation method for strain capacity of girth welding joint on X80 pipeline with 1422 mm diameter", Oil Gas Storage Transportation, 39(2), 162-168.