Offshore platform in-place method and in-place system

Abstract

The invention relates to the technical field of ocean engineering, in particular to an offshore platform in-place method and system. The in-place method comprises the following steps that: S1, an in-place point of an offshore platform is determined in a sea area; S2, fixing piles are arranged on the two sides of the in-place point correspondingly; S3, the offshore platform is connected with a fixed pile through a first connecting rope, and the side, away from the fixed pile, of the offshore platform is connected with a tug through a second connecting rope; S4, the resultant force of the pulling force applied to the offshore platform by the fixing pile through a first connecting rope is F1, the pulling force applied to the offshore platform by the tug through the second connecting rope is F2, F1 and F2 are opposite in direction, F1 is larger than F2, and under the action of F1 and F2, the length of the first connecting rope between the fixing pile and the offshore platform is gradually shortened so that the offshore platform can move towards the in-place point; and S5, when the offshore platform moves to the in-position point, in-position is completed. According to the method, the cost and difficulty of scheduling and coordination in the in-place process can be reduced, the in-place precision is improved, and the in-place time is shortened.

Description

technical field [0001] The invention relates to the technical field of marine engineering, in particular to an offshore platform positioning method and positioning system. Background technique [0002] In recent years, with the increase of ocean development, there are more and more various platform facilities in the ocean, and the positioning of these offshore platform facilities has become more and more prominent. In the prior art, in the open sea area, especially the sea area far from the shore, it is necessary to use tugboats to pull or push the offshore platform in multiple directions to move the offshore platform to the specified position, and then adjust the ballast system to realize the bit. In this process, the ballasting process of the offshore platform takes a long time, and the position of the tugboat is constantly moving under the influence of ocean currents, waves, and strong winds. Only then can it be roughly seated, and the seat accuracy is between 3 meters ...

AI Technical Summary

Problems solved by technology

The above-mentioned conventional methods are greatly affected by uncertain factors such as ocean currents, waves, and strong winds. The process of positioning takes a long time and requires a large number of tugboats, at least three, which increases the cost and difficulty of scheduling and coordination. In addition, the process of positioning takes a long time. The longer the time, the higher the risk of other accidents

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