Optimization Design of a 500 kN Workover Rig Mast after Computer Simulated Overload Test

Abstract:

The 500 kN mast, which is part of a workover rig used for interventions and overhauling works for oil and gas wells, is a spatial multiple indeterminate structure made of many bars, with rigid nodes. The aim of this paper is to determine, through computer simulation of overload test, the state of stress and displacements for the existing construction and to find an improved solution. The overload test is experimentally realized on specialized stands and involves the mast’s loading with the maximum hook load multiplied by a safety factor of 1.4 and, in addition, with the dead weight, the hoisting system weight, and with the corresponding forces due to the draw works drum socket and the blind end. Since this is a prototype construction made of structural steel rectangular pipes and profiles as L, I, U-shaped cross section, such an analysis is necessary to ensure the mast’s and rig’s safety during functioning.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 932-937
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.932
• Online since: November 2015
• Authors: Lavinia Silvia Stanciu*, Ioan Popa
• Keywords: Displacements, Drilling Mast, Overload Test, Stress, Workover Rig

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