Method for manufacturing and fixing submarine pipeline buckle arrestor on basis of morphological energy adsorption

Abstract

The invention belongs to the technical field of pavement of a submarine pipeline facility and relates to a method for manufacturing and fixing a submarine pipeline buckle arrestor on the basis of morphological energy adsorption. The method comprises the following steps of: manufacturing a pair of semicylindrical shells; cutting off one block from the middle part of one end of each semicylindricalshell and respectively cutting off one block from both sides of the other end of each shell; after abutting the two semicylindrical shells of which interference shells are cut off, fixing the two semicylindrical shells on a submarine pipeline, wherein the end of one shell, at which the middle interference shell is cut off, and one end of the other shell, at which the side interference shells are cut off, are positioned at the same end after being abutted; extending outwards and distributing each interference shell along the direction of the pipeline length and abutting each interference shellwith the shells, so that blanks are reserved at the original positions of a novel shell, at which the interference shells are cut off, after the interference shells are abutted with the semicylindrical shells; and fixing each interference shell on the submarine pipeline along both side edges in the direction of the pipeline length. Due to the adoption of a reasonable construction process, the cost is reduced, the phenomenon of buckle propagation of the submarine pipeline is effectively controlled, and the unification of the economy and the safety is realized.

Description

technical field [0001] The invention belongs to the technical field of installation and operation of submarine pipelines, and in particular relates to a manufacturing and fixing method capable of effectively preventing buckling propagation of submarine pipelines. Background technique [0002] Submarine pipeline is an important way of oil and gas transportation in offshore oil engineering, and its safe operation is the key to ensure the smooth progress of offshore oil and gas production. Due to the deep water depth of the deep-water submarine pipeline, it will bear huge hydrostatic pressure. Deep-water pipelines laid flat on the seabed may be hit by heavy objects such as anchors, which will cause their own geometric defects; the low-temperature environment in deep water and the hot oil transported in the pipeline constitute a temperature difference between the inside and outside of the pipeline, which will cause axial deformation of the pipeline; Unreasonable operation in th...

AI Technical Summary

Problems solved by technology

[0008] At present, there is no anti-bending device that can improve the efficiency of anti-bending from the perspective of energy absorption, and there is no anti-bending device that is lighter than the integral anti-bending device and suitable for deep-water pipelines.

Images