Structural Research And Optimization Of Coiled Tubing Reel Replaced Quickly

Coiled Tubing has been widely used in drilling and mining operations.Its advantages of cost saving,safe operation,and other advantages have made it a concern of researchers in various countries.Coiled Tubing reel is an important device for starting,storing,and transporting coiled tubing.Its capacity,volume,and structural form are important parameters that limit the efficiency of the continuous tube truck.Due to the improvement of drilling technology,the depth of the oil field is often too large in actual projects.Therefore,the length of the continuous pipe required is too long,which causes the continuous pipe reel to be frequently disassembled and wound around the continuous pipe.This undoubtedly increases the auxiliary preparation time and greatly reduces the The overall efficiency has caused a waste of funds.Therefore,this dissertation studies the structure of the quick-change continuous tube reel based on the existing reel structure,and optimizes the reel bottom skid.This study provides a reference basis for the structure design of the quick-change reel and has important practical significance.In this paper,the combination of theoretical calculation and finite element analysis is used to verify the rationality of the structural design scheme.Firstly,through the existing replaceable or quick-change continuous tube reel equipment structure,its existing deficiencies are proposed to improve the design of the design,and the overall structure design of the quick-change continuous tube reel is completed through the basic theories and methods of modern design.The design of the reel skid and drive system was completed;then the quick-change reel structure was designed.The dimensions of the core diameter,width and baffle diameter were calculated,and a three-dimensional model was established;then the reducer and hydraulic pressure were The motor,bearing,lifting device,etc.are selected;the basic working principle and quick-change process of the quick-change continuous pipe reel are briefly described.Secondly,the different loads on the reel under full load conditions and lifting conditions are calculated to provide numerical basis for subsequent finite element analysis.The specific loads are: the weight of the continuous tube wound on the reel;the radial stress on the reel body after winding the continuous tube and the axial force of the reel baffle;the wind load on the reel during lifting.Then,according to the full load conditions and lifting conditions,the workbench software was used to analyze the strength of the reel.The results show that the strength of the reel meets the requirements.At the same time,during the continuous pipe winding process,the reel is analyzed due to the changes in the relaxation angle and dynamic And the transient dynamics analysis of the load to verify that the strength of the reel meets the requirements;finally,the collision analysis between the reel and the reel skid is performed,and the overall displacement response curve through the reel and the reel pedestal and their respective displacement clouds and The stress cloud map shows the displacement and stress changes of the reel and the reel bogie under the hoisting conditions,and studies the influence of the friction coefficient,material properties,and the change of the friction coefficient on the impact analysis.Finally,the static analysis of the reel skid is performed.By comparing the maximum stress and the maximum deformation of the reel skid in the previous chapter,the values of greater stress and maximum deformation are selected as the target and the stiffness respectively.The quality is the target as the objective function,and then through the sensitivity analysis,the larger optimization parameters of the influence of each design parameter on the objective function are obtained,so that the optimal optimization scheme is selected.Studies have shown that the friction coefficient and material properties between the reel and the reel bottom skid have little influence on the impact analysis and can be ignored.The increase in the initial speed of the reel roll will increase the stress of the post-collision reel.According to the analysis,it should be selected that the speed of lowering the drum should not exceed 9m/s,which is a certain guideline for the hoisting process.After optimization of the stiffness of the reel bottom skid,the deformation of the bottom skid was reduced by 0.069 mm,which was reduced by 36.31%.The weight of the reel bottom skid was reduced by 118.81 Kg,a decrease of 6.28%,and the bottom skid stress was increased by 15.52 MPa.Increased 29.47% to meet the strength requirements.The optimization of the reel bottom skid with the goal of mass reduction reduced the bottom skid mass by 289.08 Kg,which was reduced by 15.28%.The bottom skid deformation was reduced by 0.022 mm,which was 11.58%.The overall bottom skid stress was increased by 9.6 MPa.18.23%,to meet the strength requirements.