Efficient passing method for anti-corrosion equipment in subsea pipeline joint

Abstract

The invention discloses an efficient passing method for anti-corrosion equipment in a subsea pipeline joint. The efficient passing method comprises the steps that a to-be-welded subsea pipeline moving area and an anti-corrosion equipment standby area are arranged at the end of a welded subsea pipeline; a to-be-welded subsea pipeline is placed in the to-be-welded subsea pipeline moving area, and inner anti-corrosion equipment is installed in the inner anti-corrosion equipment standby area. The moving equipment drives one end of the to-be-welded subsea pipeline to be aligned with the inner anti-corrosion equipment, the inner anti-corrosion equipment enters the to-be-welded subsea pipeline, the moving equipment drives the other end of the to-be-welded subsea pipeline to be in butt joint with the end of the welded subsea pipeline, and the inner anti-corrosion equipment enters the welded subsea pipeline; and the inner anti-corrosion equipment moves to the node inner anti-corrosion work station to start anti-corrosion treatment in the subsea pipeline node, and returns to the anti-corrosion equipment standby area after the inner anti-corrosion treatment is completed. According to the method, the to-be-welded subsea pipeline is introduced between the anticorrosion equipment standby area and the welded subsea pipeline, the to-be-welded subsea pipeline is carried through inherent equipment of the operation line, and the arrangement problem and the passing efficiency problem of the anticorrosion equipment in the joint on the domestic conventional pipe laying operation line are successfully solved at the same time.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion treatment in sea pipes, in particular to an efficient access method for anti-corrosion equipment in sea pipe nodes. Background technique [0002] For subsea pipelines with internal coating, there is no application precedent in the field of domestic subsea pipeline laying engineering, and the design of domestic pipe laying ship operation lines does not consider the situation of anti-corrosion construction in joints, and there is no anti-corrosion construction in joints in domestic subsea pipeline laying field methods and application cases, and offshore pipelaying generally needs to consider pipelaying efficiency in order to minimize construction costs, and the introduction of anti-corrosion construction in sea pipe joints on conventional pipe-laying operations lines, the addition of anti-corrosion construction equipment in joints makes the operation The line construction process is complicat...

AI Technical Summary

Problems solved by technology

[0002] For subsea pipelines with internal coating, there is no application precedent in the field of domestic subsea pipeline laying engineering, and the design of domestic pipe laying ship operation lines does not consider the situation of anti-corrosion construction in joints, and there is no anti-corrosion construction in joints in domestic subsea pipeline laying field methods and application cases, and offshore pipelaying generally needs to consider pipelaying efficiency in order to minimize construction costs, and the introduction of anti-corrosion construction in sea pipe joints on conventional pipe-laying operations lines, the addition of anti-corrosion construction equipment in joints makes the operation The line construction process is complicated and the pipe laying efficiency is reduced

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