Selection and utilisation of Kymera bit for Oligocene - Eocene development wells in the north-west area, Cuu Long basin
Abstract
During the oilfield appraisal campaign in the north-west area of the Cuu Long basin, PDC and TCI bits were utilised to drill through Oligocene-Eocene sequences of 12¼inch hole section of the L-1X, L-2X and L-3X wells with average ROP from 0.9 to 3m/hour. This very low ROP resulted in long well operation time and high well cost.
A new bit technology utilising Kymera bit (PDC combined with TCI) has been employed by PVEP POC to drill the 12¼inch hole section through Oligocene-Eocene sequences. This application of Kymera bit in the L-4X well had very good results, recording a high average ROP of 5.99m/hour at interval of 516m.
Based on the above good result, PVEP POC shall continue to select and use Kymera bit to optimise well time and well cost for upcoming drilling campaigns.
References
2. PVEP POC Drilling Program, Geological Proposal EOWR. Daily reports of wells in L-oilfield.
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