Pipe rod operation method for oil-gas well workover

Abstract

The invention relates to a pipe rod operation method for oil-gas well workover. A pipe rod is lowered into a well through the following steps that a Y-direction translation mechanism moves the pipe rod to the front side of a catwalk, a pipe feeding mechanism transfers the pipe rod to the catwalk, a pipe rod male buckle is automatically oiled, the length of the pipe rod is automatically measured, the near-well end of a lifting swing frame rises, and an X-direction bridge frame extends towards a wellhead drill floor; an elevator is arranged at the female buckle end of the pipe rod, the pipe rodis lifted upwards by a pulley hook, and the male buckle end slides along with a bridge frame trolley until the pipe rod is completely lifted; the lifted pipe rod is lowered into the well, and the bridge frame trolley, the X-direction bridge frame and the lifting swing frame are reset; the next pipe rod is lowered into the well one by one according to the above steps until the pipe rod on the top layer is completely lowered into the well; a lifting platform jacks up the Y-direction translation mechanism, a top cross arm is removed, and then the lifting platform falls down to enable the Y-direction translation mechanism to fall on the lower cross arm; and lowering of the next layer of pipe rods is continuously completed. The operation method can ensure good lubrication and accurate length measurement of the pipe rod, reduce labor intensity and improve operation efficiency and safety.

Description

technical field [0001] The invention relates to a wellhead operation method, in particular to a pipe rod operation method for oil and gas well workover, and belongs to the technical field of wellhead operation devices. Background technique [0002] During oil extraction operations, a drilling rig needs to be installed at the wellhead, and a drilling floor is set up a few meters above the ground. When drilling an oil well, as the well depth continues to deepen, the drill pipe must also be continuously lengthened, often requiring several kilometers of drill pipe. Therefore, a pipe rack will be equipped in front of the drilling rig to store the drill pipe, and a cat is installed in front or behind the drilling rig. A channel for transporting drill pipe back and forth between the pipe rack and the drilling rig. During oil production and workover, the pipe rack can store the oil pipe, and the catwalk is used to transport the oil pipe back and forth between the pipe rack and the ...

AI Technical Summary

Problems solved by technology

[0004] The defects of the traditional pipe-laying operation method are as follows: 1. Due to the continuous workover process, a certain amount of crude oil and stains inevitably adhere to the surface of the work pipe rod, and the length, weight and quantity of the work pipe rod are long, heavy, and large in number. The operation of the workers is extremely inconvenient, the labor intensity is very high, and the work efficiency is low

[0005] 2. In case of rain, snow and freezing weather, there are still a series of problems such as high safety risks for employees in the poor field working environment

[0007] The pipe rods travel a certain distance on the cross arm by manual throwing force and free rolling. During the free rolling process, the stains adhered to the surface make the pipe rods prone to local jamming, which will inevitably make some pipe rods not push in place, resulting in skewed disorderly discharge

In severe cases, it may even cause the entire row of pipes to fall to the ground, causing accidents such as damage to the pipes and smashing the operator, and there is a risk of personal safety and property loss

[0008] 4. It is necessary to arrange two site workers to carry and stack the pipe rods, and the labor cost is high

The traditional piping operation method obviously cannot be connected with the wellhead integrated equipment for the workover operation, and the operation efficiency is low, which is not in line with the development direction of the industry

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