Full frequency prediction method for vibration noise on deepwater semi-submersible drilling platform

Abstract

The present invention discloses a full frequency prediction method for vibration noise on a deepwater semi-submersible drilling platform, wherein the method includes the following steps: S1, determining a vibration source and noise source of the deepwater semi-submersible drilling platform under the condition of loading, and obtaining data relating to the vibration source and noise source; S2, performing a vibration prediction for the deepwater semi-submersible drilling platform, and providing, by the vibration prediction, services for structural noise caused by vibration; S3, predicting noise on the deepwater semi-submersible drilling platform; S4, determining the transfer path of the noise, and evaluating noise levels. The full frequency prediction method of the present invention is an innovation without needing to separately build an acoustic model under different frequency-domain conditions. The vibration of the platform structure and cabin noise ratio under different frequency domains can be obtained only by modifying element conditions on the input boundary and dividing subsystem, and the weight ratio can be directly obtained, which provide an effective measurement for reducing vibration and noise.

Description

technical field [0001] The invention relates to a full-frequency prediction method for vibration and noise of a deep-water semi-submersible drilling platform. Background technique [0002] Offshore platforms are the basic facilities for the development of offshore oil and gas resources and the bases for offshore production and living. In view of the fact that production personnel live on offshore platforms for a long time, the International Maritime Organization (IMO) issued the International Ship and Offshore Engineering Facilities Code, which puts forward relatively strict requirements on the living quarters and working environment noise of offshore platforms. [0003] With the gradual development of ocean development from shallow water to deep water, the use of deep-water semi-submersible drilling platforms is increasing day by day, such as oil and gas storage, offshore factories far offshore, offshore power stations, etc. are all development areas of deep-water semi-subm...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the defects of heavy workload, long time and inability to analyze the weight of vibration and noise in different frequency domains due to the separate prediction of low frequency, intermediate frequency and high frequency, and to provide a deep water semi-submersible drilling platform. Full-frequency Forecast Method of Vibration and Noise

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