Design And Calculation Of ZJ40/2250LDB Rig Drawworks

Drawworks is the core component of ZJ40/2250LDB rig; it has the functions of dismounting drill tools, running casings, controlling drilling pressure, handling jamming accident, as well as raising/lowering mast and substructure. Its performance directly affect the whole rig, thus the user pays special attention to the operation and reliability of the drawworks. In this paper ,it has been first done that to design the overall structure of the drawworks, in which the general requirements is fully considered asked for drilling engineering process to the drawworks, views and suggestions put forward by drilling drawworks staff is adopted, the design principles is put forward to meet industry standards correspond to norms and the corresponding API. Then, the mechanical method is used for strength analysis of the drawworks to ensure the strength to meet security needs. Following, finite element method is used to calculate and check drawworks transmission shaft to ensure that structure is reasonable and safe to use. Lastly, to do the final summarized for design of the drawworks. In this paper, design and calculation for a drawworks system has been done, in order to provide a strong theoretical basis for the use of drawworks. The drawworks has passed factory tests and has been put into industrial put, and has well reaction.