Abstract
The well cementing is important during the extended reach well drilling and the completion, whereas the displacement efficiency and the interface stability are important to guarantee the success of the cementing. In this paper, the interface stability of the cement slurry is simulated using the computational fluid dynamics software. The calculation results indicate that during the displacement, the length of the displacement interface increases with the increase of the deviation angle. The larger the eccentricity, the more significant the velocity difference, along with a longer displacement interface length, a less stable interface, and a lower displacement efficiency. Therefore, to guarantee the cementing quality and maintain a high displacement efficiency, the eccentricity should be controlled within 0.5. Application of a casing centralizer will dramatically improve the interface stability, decrease the dilution zone length of the interface and thus, is beneficial to the slurry cementing and displacement. The simulations are verified with an average absolute deviation less than 3.76% and the 45° helix angle of the rigid centralizer is recommended. Combining the data of an extended reach well on-site, methods are proposed for improving the displacement efficiency and the interface stability during the well cementing and displacement with complex boreholes. These numerical methods can be used to provide some theoretical guidance for designing the cementing of an extended reach well.
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References
Vishal A., Gupta V., Shashank N. et al. Extended-reach open-hole gravel pack completion under multiple com-plexities [C]. SPE Bergen One Day Seminar, Bergen, Norway, 2017.
Zhu X., Yi J., Liu Q. Distribution features of cuttings bed and sensitivity analysis of major drilling parameters for cuttings transport in gas drilling horizontal wells [J]. Journal of Hydrodynamics, 2015, 27(6): 884–893.
Dutra E. S., Martins A. L., Miranda C. R. Dynamics of fluid substitution while drilling and completing long horizontal-section wells [C]. SPE Latin American and Caribbean Petroleum Engineering Conference, Rio de Janeiro, Brazil, 2005.
Wang J., Sun B., Li H. et al. Simulation analysis of rotating-casing cementing displacement in extended reach well [J]. Journal of China University of Petroleum (Edition of Natural Science), 2015, 39(3): 89–97.
Wang R., Li M., Wang C. et al. Research progress in the cementing displacement mechanism [J]. Natural Gas Industry, 2013, 33(5): 69–76.
Foroushan H. K., Ozbayoglu E., Gomes P. J. et al. Mud-cement displacement in eccentric annuli: analytical solution, Iinstability analysis, and computational fluid dynamics simulations [C]. IADC/SPE Drilling Conference and Exhibition, Texas, USA, 2018.
Muhammad Z., Mayank T. Development of simulations based correlations to predict the cement volume fraction in annular geometries after fluid displacements during primary cementing [J]. Journal of Petroleum Science and Engineering, 2016, 145(9): 1–10.
Alexandre L. Effect of eccentric annulus, washouts and breakouts on well cementing quality: laminar regime [J]. Energy Procedia, 2016, 86(2): 391–400.
Chen P., Gao D., Wang Z. et al. Study on aggressively working casing string in extended-reach well [J]. Journal of Petroleum Science and Engineering, 2017, 157(8): 604–616.
Ozbayoglu E. M., Foroushan H. K., Miska S. Z. et al. On the instability of the cement/fluid interface and fluid mixing [J]. SPE Drilling and Completion, 2018, 33(1): 63–76.
Pelipenko S., Frigaard I. A. Mud removal and cement placement during primary of an oil well Part 2; steady-state displacements [J]. Journal of Engineering Mathema-tics, 2004, 48(1): 1–26.
Bu Y., Tian L., Li Z. et al. Effect of casing rotation on displacement efficiency of cement slurry in highly deviated wells [J]. Journal of Natural Gas Science and Engineering, 2018, 52(4): 317–324.
Tardy P. M. J., Bittleston S. H. A model for annular dis-placements of wellbore completion fluids involving casing movement [J]. Journal of Petroleum Science and Eng-ineering, 2015, 126(2): 105–123.
Ozbayoglu E. M., Omurlu C. Analysis of the effect of eccentricity on the flow characteristics of annular flow of non-newtonian fluids using finite element method [C]. SPE/ICoTA Coiled Tubing Conference and Exhibition, Texas, USA, 2006.
Mark S., Robert D., Wilson C. Modeling fluid interfaces during cementing using a 3D mud displacement simulator [C]. Offshore Technology Conference, Texas, USA, 2007.
Malekmohammadia S., Carrasco T. M., Storey S. An ex-perimental study of laminar displacement flows in narrow vertical eccentric annuli [J]. Journal of Fluid Mechanics, 2010, 649: 371–398.
Hardt S., Wondra F. Evaporation model for interfacial flows based on a continuum-field representation of the source terms [J]. Journal of Computational Physics, 2008, 227(11): 5871–5895.
Ermila M., Eustes A., Mokhtari M. Using magneto-rheological fluids to improve mud displacement efficiency in eccentric annuli [C]. SPE Eastern Regional Meeting, Kentucky, USA, 2012.
Therond E., Taoutaou S., James S. G. et al. Understanding lost circulation while cementing: field study and labora-tory research [J]. SPE Drilling Engineering, 2018, 33(1): 77–86.
Parisa S., Alessandro S., Jens K. Experimental investiga-tion of the stability limits of premixed syngas-air flames at two moderate swirl numbers [J]. Combustion and Flame, 2016, 164(2): 270–282.
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Project supported by the National Basic Research Development Program of China (973 Program, 2015CB251200), the National Science and Technology Major Project (Grant No. 2016ZX05020-006) and the Changjiang Scholars and Innovative Research Team in University Project (Grant No. IRT_14R58).
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Wang, Jt., Sun, Bj., Li, H. et al. Numerical simulation of cementing displacement interface stability of extended reach wells. J Hydrodyn 30, 420–432 (2018). https://doi.org/10.1007/s42241-018-0051-4
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DOI: https://doi.org/10.1007/s42241-018-0051-4