Skid-mounted continuous tube field butt welding device

Abstract

The invention relates to a skid-mounted continuous tube field butt welding device, which comprises an engineering van. A workbench is arranged in the engineering van; the left side of the workbench is provided with a welding machine, and the right side of the workbench is provided with a generator; a lifting appliance is arranged behind the workbench; a gas cylinder is arranged behind the welding machine; a tool is arranged behind the gas cylinder; a bottom plate and an openable side plate in the engineering van are provided with continuous workbench rails; and the other side of the side plate is provided with a support frame. During fieldwork, the height of the side plate of a carriage after being supported is consistent with that of the bottom plate, the workbench is pushed out of the carriage and fixed on the surface of the side plate to form an operating platform for welding preparation and welding operation; a tent is put up, butt welding construction of field continuous tubes is performed on the workbench, and welding inspection is performed finally; and the tent is taken down after the construction is finished, the workbench is moved back to the carriage and the side plate of the carriage is withdrawn. The field continuous tubes can be directly and quickly welded by centralizing all the equipment required by the continuous tube butt welding.

Description

technical field [0001] The invention relates to a special device for butt welding, in particular to a skid-mounted continuous pipe on-site butt welding device. Background technique [0002] Coiled tubing (CT for short, also known as coiled tubing, flexible tubing, serpentine tubing or coiled tubing) is the basis and important part of coiled tubing technology. A thousand-meter pipe without joints, mainly made of steel, coiled on a large-diameter (generally about 1m or more) reel. During the operation and construction, the coiled tubing coiled on the reel is sent downhole after traction, straightening, bending and re-alignment, and becomes the carrier of the working medium and the working string; after the operation, the reel reverses Movement, the coiled tubing is pulled out from the downhole and re-coiled on the reel for repeated use. Local damage and failure of the coiled tubing body will inevitably occur in coiled tubing operations. Removing the local damaged and failed ...

AI Technical Summary

Problems solved by technology

[0003] 1. Coiled tubing often works under complex comprehensive conditions such as pulling, pressing, squeezing, expanding, scouring, corrosion, fatigue, etc., and the working conditions are harsh. The pipe-pipe butt welding joints of coiled tubing completed on site cannot be avoided To withstand the same working conditions, the requirements for welding quality are very high, and special welding equipment is often required, and different grades of materials require different welding processes;

[0004] 2. The continuous pipe coiled on the reel causes the pipe body to produce plastic bending and elliptical deformation of the pipe diameter section, requiring a series of special devices and equipment to complete the precise matching assembly;

[0005] 3. The downhole operation of coiled tubing is a high-risk operation. Any quality problem in the pipe body will cause major accidents. In the light case, the downhole equipment will be damaged, and in the serious case, the oil well may be scrapped.

[0006] In addition, coiled tubing operates in a vast area, and the environmental conditions are not fixed. The damage and failure of the pipe body during operation are often sporadic, and the cost of operation is expensive.

It is not only expensive but also impractical to equip the corresponding personnel and equipment at each operating point

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