Derrick with floating frame

Abstract

The invention discloses a derrick with a floating frame, and the derrick comprises a floating frame arranged in a derrick body, wherein the inner wall of the derrick body is provided with a guide rail; the floating frame is provided with four slide blocks, and the slide blocks are matched with the guide rail; the upper and lower ends of the floating frame are respectively provided with an upper pulley and a lower pulley; the lower end of the derrick body is connected with the lower end of an oil cylinder; the upper end of the oil cylinder is connected with the floating frame; the inner wall of the derrick body is provided with a rope fixing seat, the upper end of the rope fixing seat is connected with one end of a top drive hoisting rope, and the other end of the top drive hoisting rope, after bypassing the upper pulley, is connected with a top drive; and the lower end of the rope fixing seat is connected with one end of a pressurizing steel wire rope, and the other end of the pressurizing steel wire rope, after bypassing the lower pulley, is connected with the top drive. According to the invention, the derrick body is designed into an overall framework, so that a gap exists at the sleeved joint part of the upper section (after extending to an operating position) of the derrick and the lower section of the derrick is eliminated, the displacement of the top of the derrick is reduced, the bent deformation of the oil cylinder is reduced, and the service life of the oil cylinder is significantly prolonged.

Description

technical field [0001] The invention belongs to the technical field of petroleum machinery and equipment, and relates to a derrick with a traveling frame. Background technique [0002] For the conventional oil cylinder retractable derrick, the upper section of the derrick moves up and down in the lower section of the derrick when tripping out, driving the top drive to perform drilling operations. After the upper section of the derrick stretches out to the working position, there is a certain gap between the upper section of the derrick and the lower section of the derrick. Under the action of the hook load, the gap will cause a large displacement of the top of the derrick, thereby increasing the bending deformation of the oil cylinder. During the drilling operation, tripping and tripping are frequent, and the frequency of oil cylinder expansion and contraction is very high. This process shortens the service life of the oil cylinder and increases the number of oil cylinder re...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a derrick with a traveling frame, which solves the problem that the unreasonable structure of the telescopic derrick in the prior art causes a large displacement at the top of the derrick, increases the bending deformation of the oil cylinder, and shortens the service life of the oil cylinder

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