The entire hoisting installation comprising draw-works, drum, and brakes is shown schematically in Figure 2. Factors to be considered when a hoisting system is designed or chosen are: 1. The maxim. The hook block assembly is the hoisting equipment for oil-drilling rig. It is mainly used to hoist and trip the drill pipe, replace bits, run the casing during petroleum drilling operation by cooperated with crown block, swivel, and elevator ring.
[pdf] Noble Corporation plc is an contractor organized in , England. Its affiliate, Noble Corporation, is organized in the . It is the corporate successor of Noble Drilling Corporation. The company operates 24 drilling rigs including eight , four , and 12 . It is the corporate successor of Noble Drilling Corporation. The company operates 38 drilling rigs including severnteen drillships, eight semi-submersible platforms, and thirteen jackup rigs. [1]
[pdf] The whole machine has super first-level energy efficiency,second-level compression energy-saving host,permanent magnet synchronous motor efficiency Reach IE� level、silent centrifugal fan configuration,Dual frequency conversion design of the host fan,enlarged cooler side ceiling row design,hot and cold zone design,human-ma-chine communication interface touch screen microcomputer.The controller monitors the operating status in real time.
[pdf] 
