Original scientific paper

https://doi.org/10.17559/TV-20220315014125

Drill String Mechanics and Extension Capacity of Extended-Reach Well

Weikai Liu ; Department of Petroleum Engineering, Northeast Petroleum University, Daqing high-tech development zone university street No.99, Daqing, Heilongjiang, China
Zhimin Tian ; Department of Petroleum Engineering, Northeast Petroleum University, Daqing high-tech development zone university street No.99, Daqing, Heilongjiang, China
Yueqing Xu ; Daqing Drilling Engineering and Technology Research Institute, South Babaishang Street No. 37, Daqing, Heilongjiang, China
Min Zhao ; No. 1 Mud Logging Company of CNPC Daqing Drilling & Exploration Engineering Corporation, Ranghulu District South 3rd Road No. 71, Daqing, Heilongjiang, China
Runqi Li ; Daqing Drilling Engineering and Technology Research Institute, South Babaishang Street No. 37, Daqing, Heilongjiang, China
Haibo Pang ; Daqing Drilling Engineering and Technology Research Institute, South Babaishang Street No. 37, Daqing, Heilongjiang, China
Hongyan Zhao ; Daqing Drilling Engineering and Technology Research Institute, South Babaishang Street No. 37, Daqing, Heilongjiang, China
Ziming Feng ; College of Mechanical and Electrical Engineering, Wenzhou University, Chashan Higher Education Park, Wenzhou City, Zhejiang Province, China

Abstract

For the design and construction of the extended-reach well, the ultimate elongation capacity of the extended-reach well was studied. Given the drilling practice of extended-reach well, the extension limit prediction criterion of extended-reach well is established. In this paper, based on the drilling practice of extended-reach well, by the finite element method, the gap element method and the dynamic finite element method of the whole drill string, static analysis model of the extended-reach well and the mechanicsꞌ analysis model of drill string vibration are established. The frictional resistance condition and strength condition of the limit extension of the extended-reach well are solved respectively, and the extended limit prediction criterion of the extended-reach well is established. The software was prepared based on the model and theory, the model and software were validated with the example of drilling, and the average error of the calculated value is 6.94% when compared with the measured values in the field. It can meet the needs of drilling engineering and study of the extension capability of the extended-reach wells.

Keywords

drill string; extended-reach well; extension; friction; mechanics

Hrčak ID:

288394

URI

https://hrcak.srce.hr/288394

Publication date:

15.12.2022.

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