Model Experimental Research And Theoretical Anslysis For 4000m Derrick And Substructure

It is essential to finite element analysis and experiment for understanding the structural characteristics and strength situation of derrick and substructure as they are important equipments for oil drilling. However, it is limited to do oil derrick and substructure experiment by many factors especially in the process of developing new products. So it is economical and effective to make lots of similar models and do experiments indoors which also can improve calculation analysis and experimental research.First, the paper summarized development, classification and steps of structure model experiment and model similar theory. Then it proposed similar model scheme of 4000m derrick and substructure 1:8 proportion and provided important information such as technical parameters, structure characteristics and so on according to model similarity theory and 4000m level front opening derrick and slingshot substructure.It applied structure stress wireless test system basing on the wireless local area network to the experimental research. The experiment included derrick model static and dynamic load, derrick model dynamic hoisting and substructure model dynamic hoisting .It got derrick and substructure model load capacity and hoisting working condition through experiment.The paper built finite element model of derrick and substructure large proportion similarity through ANSYS and did computer simulation in view of three experiments above. It did combinatorial analysis to derrick and substructure model under three conditions and got the strength situation of rods through the finite element calculation, which provided help for designing product.Finally, the paper got the overall evaluation of 4000m drilling rig derrick and substructure model with bearing conditions and hoisting working condition through the qualitative comprehensive analysis of experimental data and finite element calculations results.