Ye Shanlin,Song Xianzhi,Zhu Zhaopeng,et al.PDC bit selection and parameter optimization based on big data analysis and intelligent technology[J].China Petroleum Machinery,2026,54(9):10-18.
Ye Shanlin,Song Xianzhi,Zhu Zhaopeng,et al.PDC bit selection and parameter optimization based on big data analysis and intelligent technology[J].China Petroleum Machinery,2026,54(9):10-18.DOI: 10.12473/CPM.202505039.
PDC Bit Selection and Parameter Optimization Based on Big Data Analysis and Intelligent Technology
As oil-gas field development engineering technology focuses on digital and intelligent transformation, the methods for bit selection and parameter optimization need to be upgraded and innovated urgently. By leveraging the advantages of big data and intelligent algorithms, bit and parameter selection can become more reasonable and efficient. However, most existing intelligent models for bit selection are established based on the correspondence between formation drillability properties and bit models, lacking exploration of deeper causes such as bit design characteristics. To address this issue, a framework for bit selection and parameter optimization based on big data analysis and intelligent technology is proposed. Firstly, an intelligent prediction model for bit features-formation information vs. average footage-rate of penetration (ROP) was constructed by integrating formation rock mechanical data, historical bit performance data, and key feature data, to evaluate the performance of different bit feature combinations in the tested formation and match the optimal bit combination with available bit models. Then, based on historical data of the optimized bit, a distribution heat map of weig
ht on bit (WOB)-rotary speed and ROP was established to optimize drilling parameters. Finally, field data from a block of an oilfield in southwest China were used to verify the model. The results show that the
R
² values of the model on the training set and test set reach above 0.9 and 0.8, respectively, both with the mean absolute percentage error (MAPE) less than 20%. Formation properties including well depth, lithology, formation density and compressive strength have significant effects on bit ROP and footage. Key bit parameters such as the number of blades, main cutting tooth inclination angle and tooth height also play a vital role in bit performance. In the same well section, after parameter optimization, the number of bit runs is reduced from 5 to 3, and the ROP is increased from 0-10 m/h to 10-20 m/h, resulting in a significant improvement in overall drilling efficiency. This study provides a data-driven solution for bit selection and parameter regulation in intelligent drilling.
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