Drilling parameters determination for slim wellbore in the white tiger field
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Full Text |
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Author |
Nguyen Huu Truong
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e-ISSN |
1819-6608 |
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On Pages
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1293-1301
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Volume No. |
20
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Issue No. |
16
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Issue Date |
November 30, 2025
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DOI |
https://doi.org/10.59018/0825147
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Keywords |
drilling parameters, slim wellbore, white tiger field, dynamic stability of the drill string.
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Abstract
Over the years, hundreds of wellbores with a diameter of 165.1 mm have been drilled into the basement formations of the continental shelf of Vietnam. However, low drilling performance has often been observed, primarily due to the instability of the drill string caused by inappropriate drilling parameters such as weight on bit (WOB), rotation speed (RPM), and mud pump flow rate (Q). These suboptimal parameters result in decreased drilling efficiency and a reduced rate of penetration (ROP). To address this issue, this study applies the mapping theory method to investigate the dynamic stability of the drill string when drilling into basement rocks. Dynamic stability is a critical factor in determining the optimal drilling parameters. The results indicate that for a wellbore diameter of 165.1 mm, the optimal drilling parameters are a WOB of 4.65 tons, an RPM of 93, and a mud pump flow rate of 17.4 liters per second.
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