Active low-additional-force pipeline moving effect protection method

Abstract

The invention discloses an active low-additional-force pipeline moving effect protection method. The method comprises the following steps that (1) the pipeline moving value produced for a pipeline when no protection measures are adopted is calculated; (2) the maximum tolerable pipeline moving displacement is calculated according to the tolerance capacity of a structure in the area where the pipeline is located and serves as the pipeline moving control target value; (3) variable axial resistance is applied to the end of the pipeline based on the pipeline moving control target value, the pipeline moving value actually produced for the pipeline under the effect of the variable axial resistance is calculated, and a variance function in which the resistance value varies as the axial displacement varies is repeatedly adjusted, so that the pipeline moving value actually produced is smaller than the pipeline moving control target value; and (4) an additional structure at the end of the pipeline is designed, so that the additional structure can produce an axial resistance, with the resistance value varying according to the variation function in which the resistance value varies as the axialdisplacement varies, on the pipeline when sliding in the axis direction of the pipeline. According to the protection method provided by the invention, the purpose that the deep sea pipeline moving effect is controlled and eliminated is achieved through a fundamental mechanism for interfering with and inhibiting pipeline moving.

Description

technical field [0001] The present invention relates to the axial in-situ stability design of deep-sea oil pipelines, in particular to an active low additional force protection method for pipeline routing effects, which actively eliminates pipeline routing effects by actively interfering with the generation mechanism of pipeline routing effects effect, reducing the risk of axial instability and damage to the piping system. Background technique [0002] There are still a large number of high-quality oil resources to be developed in my country's deep sea areas. The development of deep sea oil exploration technology and equipment is of great significance to solve the dilemma of my country's shortage of oil resources. The pipeline system is an important means of collection and distribution in deep-sea oil exploitation. The temperature of oil resources transported by deep-sea pipelines is extremely high, and in order to ensure the safe operation of pipelines, routine maintenance ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide an active low additional force pipeline effect protection method to solve the problem of high additional force anchoring structure in the existing pipeline protection practice with high cost and unsatisfactory The problem of high certainty and poor protection effect achieves low-cost and high-yield engineering results

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