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Numerical modeling on drilling fluid and cutter design effect on drilling bit cutter thermal wear and breakdown
Ayop, Ahmad Zhafran Bahruddin, Ahmad Zafri Maulianda, Belladonna Prakasan, Aruvin Dovletov, Shamammet Atdayev, Eziz Rani, Ahmad Majdi Abdul Elraies, Khaled Abdalla Ganat, Tarek Al‑arbi Barati, Reza
Ayop, Ahmad Zhafran
Bahruddin, Ahmad Zafri
Maulianda, Belladonna
Prakasan, Aruvin
Dovletov, Shamammet
Atdayev, Eziz
Rani, Ahmad Majdi Abdul
Elraies, Khaled Abdalla
Ganat, Tarek Al‑arbi
Barati, Reza
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Abstract
The unconventional reservoir geological complexity will reduce the drilling bit performance. The drill bit poor performance was the reduction in rate of penetration (ROP) due to bit balling and worn cutter and downhole vibrations that led to polycrystalline diamond compact (PDC) cutter to break prematurely. These poor performances were caused by drilling the transitional formations (interbedded formations) that could create huge imbalance of forces, causing downhole vibration which led to PDC cutter breakage and thermal wear. These consequently caused worn cutter which lowered the ROP. This low performance required necessary improvements in drill bit cutter design. This research investigates thermal–mechanical wear of three specific PDC cutters: standard chamfered, ax, and stinger on the application of heat flux and cooling effect by different drilling fluids by using FEM. Based on simulation results, the best combination to be used was chamfered cutter geometry with OBM or stinger cutter geometry with SBM. Modeling studies require experimental validation of the results.
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Date
2019-10-11
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Publisher
Springer
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Keywords
PDC cutter design, Thermal–mechanical wear, FEM modeling, Drilling fluid cooling effect
Citation
Ayop, A.Z., Bahruddin, A.Z., Maulianda, B. et al. Numerical modeling on drilling fluid and cutter design effect on drilling bit cutter thermal wear and breakdown. J Petrol Explor Prod Technol 10, 959–968 (2020). https://doi.org/10.1007/s13202-019-00790-7