China Safety Science Journal ›› 2026, Vol. 36 ›› Issue (1): 72-80.doi: 10.16265/j.cnki.issn1003-3033.2026.01.0911

• Safety Technology and Engineering • Previous Articles     Next Articles

A multi-class intelligent identification model for kick risk

WU Shengnan1,2(), ZHANG Laibin1,2, HU Yiming1,2,3, CUI Rong1,2, LIU Shujie4, YIN Zhiming5   

  1. 1 College of Safety and Ocean Engineering, China University of Petroleum (Beijing), Beijing 102249, China
    2 Key Laboratory of Oil and Gas Safety and Emergency Technology, Ministry of Emergency Management, Beijing 102249,China
    3 CNOOC Safety & Technology Services Co., Ltd., Tianjin 300450,China
    4 CNOOC Hainan Energy Co., Ltd., Haikou Hainan 570100, China
    5 CNOOC research Institute Co.,Ltd., Beijing 100028,China
  • Received:2025-08-14 Revised:2025-10-20 Online:2026-01-28 Published:2026-07-28

Abstract:

In order to improve the identification accuracy of kick risk during drilling, a multi-category kick risk intelligent identification model was proposed by integrating feature engineering and machine learning techniques. Firstly, a wavelet transform was employed to achieve noise suppression based on field-measured kick data. Secondly, the dynamic variation trends of key parameters were extracted using smooth spline functions, and the abnormal fluctuation behaviors of kick-related characteristic parameters were analyzed. Based on this, a three-level risk classification criterion (low, medium, and high) was established, and kick risks were labeled according to the variation features of drilling data. Then, the sparrow search algorithm (SSA) was introduced to optimize the extreme learning machine (ELM), and a multi-classification kick risk intelligent identification model based on IELM was constructed. Finally, the performance of the model was validated through training, tuning, and testing on the constructed risk dataset. The results show that the IELM model outperforms the original ELM and back-propagation (BP) neural network model in terms of classification accuracy and discrimination stability, and is capable of identifying different levels of kick risks more accurately and efficiently.

Key words: overflow risk, identification model, improved extreme learning machine (IELM), neural network, characteristic parameters

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