Open Access

ARTICLE

Analysis of the Applicability of a Risk Quantitative Evaluation Method to High Temperature-Pressure Drilling Engineering

Renjun Xie¹, Xingquan Zhang¹, Baolun He^2,*, Ningyu Zheng², Yuqiang Xu^2,*

1 CNOOC Research Institute, Beijing, 100101, China
2 College of Petroleum Engineering, China University of Petroleum, Qingdao, 266580, China

* Corresponding Authors: Baolun He. Email: ; Yuqiang Xu. Email:

(This article belongs to the Special Issue: High Pressure Jet Theory and its Applications)

Fluid Dynamics & Materials Processing 2023, 19(6), 1385-1395. https://doi.org/10.32604/fdmp.2023.025454

Received 13 July 2022; Accepted 27 September 2022; Issue published 30 January 2023

Abstract

The optimization of methods for the quantitative evaluation of risks in drilling engineering is an effective means to ensure safety in situations where high temperature and high pressure blocks are considered. In such a context, this study analyzes the complexity of the drilled wells in such blocks. It is shown that phenomena such as well kick, loss, circulation, and sticking, are related to the imbalance of wellbore pressure. A method for risk quantitative evaluation is proposed accordingly. The method is used to evaluate the risk for 9 drilled wells. By comparing the predictions of the method with actual historical data related to these wells, it is found that the coincidence rate is about 95%.

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