Automatic and efficient well drilling catwalk

Abstract

The invention discloses an automatic and efficient well drilling catwalk. The automatic and efficient well drilling catwalk comprises a catwalk, a ramp is arranged between the end part of the catwalkand a drilling platform, a ramp rack is arranged on the ramp, a drive trolley slides on the ramp rack, and a lower drive gear and a lower drive mechanism which are matched with the ramp rack are arranged at the bottom of the drive trolley; a support and a pipe feeding beam are arranged between the end part, towards the ramp, of the catwalk and the drive trolley, one end of the support is hinged tothe end part of the catwalk, the other end of the support is hinged to one end of the pipe feeding beam, the other end of the pipe feeding beam is erected on the drive trolley, a pipeline groove is formed in the upper surface of the pipe feeding beam, an upper rack is arranged on the lower surface of the pipe feeding beam, and an upper drive gear matched with the upper rack and an upper drive mechanism used for driving the upper drive gear are arranged at the top of the drive trolley; and a groove used for containing the pipe feeding beam and the support is formed in the catwalk. According tothe automatic and efficient well drilling catwalk, the degree of automation is high, the transmission efficiency is high, safety and reliability are achieved, stress is more reasonable, the problem that a steel wire rope is prone to wearing can be effectively solved, and the service life of the well drilling catwalk is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling machinery, in particular to an automated high-efficiency drilling catwalk. Background technique [0002] Drilling catwalk is a kind of pipe conveying equipment, which can safely and reliably transport pipes back and forth between the drilling platform and the ground. It has the characteristics of high reliability, strong adaptability, high conveying efficiency and safety, and is very important in drilling equipment. A pipe transportation equipment. [0003] There are mainly three types of existing drilling catwalks: [0004] 1. Wire rope-driven power catwalk, relying on wire rope and hoist to pull the trolley on the catwalk, and the trolley pulls the drill pipe. There is a pipe chuck on the trolley, and the force is driven by the steps of the pipe collar to drive the pipe. Its early products are only lower pipes. function, there is no pipe loading function, and the main defects of thi...

AI Technical Summary

Problems solved by technology

[0004] 1. Wire rope-driven power catwalk, relying on wire rope and hoist to pull the trolley on the catwalk, and the trolley pulls the drill pipe. There is a pipe chuck on the trolley, and the force is driven by the steps of the pipe collar to drive the pipe. Its early products are only lower pipes. function, there is no pipe loading function, and the main defects of this kind of drilling catwalk are: the drill pipe and collar casing can only be sent to the ramp, but not to the wellhead position on the drill floor, and secondary lifting is required; the drill pipe and drill collar casing When it is necessary to get off the drilling floor, the pipe needs to be hoisted to the ramp of the drilling floor door before the pipe can be lowered. This is one more process, which reduces the safety and does not meet the requirements of the automatic drilling process; the hydraulic pipeline on the trolley needs to move with the trolley And constantly elongate and shrink, so being stretched reduces the service life and reliability

[0005] 2. The four-link type power catwalk, through the hydraulic cylinder to push the support rod, the pipe delivery beam is lifted until the drill floor, and the hydraulic cylinder or trolley on the beam pushes the transported pipe to the wellhead. The main defects of this drilling catwalk are: : When the drill pipe drill collar casing needs to be lowered to the drill floor, the pipe head must be pulled to the beam before the pipe can be lowered, which does not meet the requirements of automatic drilling technology; Poor stability when the beam is lifted in the air

[0006] 3. Steel wire rope ramp pull-up type dynamic catwalk, one end of the beam is supported by the link rod, the other end is supported by the ramp of the drill floor gate and the roller on the beam, and at the same time, two steel wire ropes are used to pull the lug plate connected to the middle of the beam through the hoist , drive the beam to lift, and the beam can reach the position about 500mm from the center of the wellhead on the drilling floor, and send the pipe directly to the wellhead. Its main disadvantages are: the hoist configuration has a large power and high energy consumption; the steel wire rope is easy to wear and is easily damaged during disassembly and assembly; the steel wire rope is used in a certain section for many times, and it is difficult to quantitatively determine the degree of wear when replacing, and the reliability decreases

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