2011•Liaoning Chemical IndustryRequires access

Dynamic Analysis of Drill String

Zhao Yan

Abstract

Drill drilling is the most basic tool during drilling wells,safety and reliability of the drill string are very important for drilling projects,damage of the drill string can seriously affect normal drilling.So it is necessary to analyze reliability of the drill string to gain optimal combination of drilling tools.In this paper,based on the finite element method,mechanical model of the drill string was gained,and the model was solved by NEWMARK method.Through dynamic simulation of rigid packed hole assembly,force performance on surface of the drill string working in the underground was gained as well as displacement of the points on the drill string,which can provide certain significance to prevent fatigue failure.

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Available abstract

Key concepts: Drill string, Drilling, Drill, Finite element method, Structural engineering, Engineering, Drilling engineering, Displacement (psychology)