Power swivel
发布时间：2015-01-08 13:14 浏览量：2494
The newly engineered, hydraulic motor-driven. Logan 120-Ton Power Swivel provides smooth shock-free torque. It is rated to support tensile pipe loads of 120 tons at zero rpm and 65 tons of dynamic load at 100 rpm. The compact swivel-head design weighs only 2,000 lbs and fits into most drilling or work-over masts Maximum torque is rated at 8,100 ft/lbs at 150 rpm maximum.
The design incorporates a reliable, custom drive train with hardened steel gears. For most applications, the Logan 120-Ton Power Swivel eliminates the use of dangerous spinning chains, tongs, and Kelly spinners. The Power Swivel facilitates drilling with longer drill string lengths before the rig must be shut down to add pipe. Stops and start-ups are thereby reduced — improving rig efficiency and reducing wear on the pump, drawworks, and other rig equipment. The Logan 120-Ton Power swivel uses a closed loop hydraulic system with variable displacement, reversible over center pump and air or electric remote controls. The variable volume pump and hydraulic system allow torque and speed to be infinitely adjusted within stated ranges, without shifting gears or stopping and restarting the unit. Speed control is continuously variable over the entire operating range. Pressure compensating-type torque control overrides the speed control to maintain maximum torque. The power unit’s torque limit scan be set, thereby eliminating the potential danger of twist-offs or swollen boxes in the drill string. An integral rotary swivel bearing, floating washpipe assembly, and gooseneck connection liminates the need for a separate rotary swivel .A 2-3/4" bore gooseneck and washpipe assembly allows circulation through the 2-11/16" I.D. stem while rotating or in static mode. An access plug allows wireline to be run through the unit.
Features include:
（1）Smooth, shock-free torque reduces drill string damage.
（2）Fits many drilling and workover masts.
（3）Allows use of longer drill string lengths.
（4）Power unit torque limits can be set.
（5）Separate rotary swivel is unnecessary.
（6）Choice of diesel engines.
（7）Increased environmental safety features on skids and trailers.
（8）Easy to service.
（9）Control can be operated remotelyor from the power unit.
