Design, Simulation And Implement Of Pipe Transportation System For Workover

This paper put forward a new design scheme of pipe transportation device on the basis offully study of the present domestic and overseas development of pipe transportation deviceand consider with the present situation of Chinese oil field. This device adopts the modulardesign method and mainly composed by four parts as base, up and down tube institutions,sloping road and dynamic extension arm. The hydraulic system and control system of thisdevice was also be researched and designed.This paper mainly shows the structure, hydraulic system and control system design ofevery module of this device. The3D model of the device was created with SolidWorks. Thestrength check and calculation of the key components was realized with COSMOSWorks andthe overall structure of the device was confirmed. Then the detailed design of this device wascompleted. The3D model of slope mechanism was transformed into plane system on the basisof kinematics and dynamics theory of multiple rigid body. The displacement, velocity andacceleration equation of the slope mechanism and the driving force equation of hydrauliccylinder was derived.The simulation models of the slope mechanism, dynamic extension arm and up anddown tube mechanism was created with SolidWorks. The results was imported into ADAMSand was added required geometric constraints. With the kinematics and dynamics simulationanalysis of slope mechanism and dynamic extension arm, the driving force of the hydrauliccylinder, the rotation angle changes of slope mechanism, the velocity and acceleration curvesof dynamic extension arm was gained. Meanwhile, with the combine simulation ofmechanical and hydraulic to the slope mechanism, we can get the pressure and flow ratecurves of hydraulic cylinders. We have to implement contact collision analysis as thecollisions exist in the lifting and falling process of up and down tube institutions. The contactcollision force and torque curves in the process was gained. The contact collision analysis ofundertake part was carried out with different weight of pipe and different tilt angle of the upand down pipe fork. These simulations results provide theoretical basis for further designimprovements.The ending of this paper simply introduces the physical prototype of pipe transportationdevice in workover operation and field tests results. The tests show that this device couldachieve the purpose of automatically remove and discharge tubes between string racks andwellhead by three modes such as manual, semi-automatic and fully automatic. All theoperations were accurate and application effects is well. This device has the followingadvantages: stable performance, high degree of automation, easy operation, lower laborintensity of workers, less hidden trouble of safety, etc.