Design Of New Type Of Bridge Type Row Pipe System For Land Rig

Automated rig receives increasing attention with our onshore drilling constantly moving on the deep and ultra-deep, especially drilling in remote, deserts, polar. Manual processes are still more common way to deal with the triple during the tripping of land drilling at this stage. It is poor working conditions, high-risk and low efficiency when workers working on racking board. Manual processing will seriously affect the drilling efficiency especially in the heat, cold and lack of oxygen environment. Automated racking systems replace the derrick, which greatly improving drilling efficiency and reduce operating costs. Therefore carry out design and studies on automated pipe racking system land rigs are essential.In this paper, a new bridge type pipe racking system was designed based on investigate a large number of domestic and foreign literature and technical parameters of DC drive drilling land rigs ZJ50D, according to the characteristics of foreign advanced PRS is hard to promotion and application and domestic PRS develops slow.1. This section proposed a new bridge type pipe racking system, studied the working mechanism of the bridge type PRS and completed manipulator design. This section also initially identified structural dimensions of automated PRS according to racking board size parameters, and assembled bodies and completed interference test between models by using three-dimensional modeling software PROE.2. The key components of the system were experienced statics computing under extreme loads. Complex structure of PRS were executed static analysis with software ANSYS and the results for the system has a large strength margin, and PRS arm’s rigidity is relatively weak. Therefore structural optimization is needed to be done to improve PRS stiffness.3. The dynamic simulation model of bridge type PRS was established based on multi-body system dynamics theory. PRS multi-body dynamics and flexible coupling dynamics simulation is performed by using ADAMS software and the result is that hydraulic actuator has a mutation power output; manipulator clamping force has large range and system keep better consistency action between triple and manipulator. However, system rigid is weak during rigid-flexible coupling simulation. To improve the system stiffness, structural optimization for systems is very important.4. Structural optimization of pillar and arm-Ⅱ was made by using multi-objective optimization module software ANSYS, got the maximum deformation and quality of pillar were reduced by37.5%and14.5%, at the same time arm-Ⅱ were reduced by31.2%and3%compared with the original structure. Stiffness of the system enhanced and effect is significant after the optimization.5. In this chapter, control system for PRS was researched and selected hydraulic transmission as system driving control mode, and got hydraulic system schematic, block diagram and work flow chart.The new bridge type PRS which has the characteristic of simple operation, ease labor intensity, reduce drilling accidents and improve drilling efficiency can easily adapt to the domestic land rig. It also has a huge market potential and play an active role to promote the modernization of petroleum.