Test method for FPSO upper module model under simulated extreme sea condition

Abstract

The invention relates to a test method for an FPSO upper module model under simulated extreme sea condition. An FPSO upper module integration model, an electric six-degree-of-freedom platform, a control system console, a test system workbench, a motion monitoring platform, a support platform, a protective fence, a resistive strain gauge, an acceleration sensor, a static strain test and analysis system, a dynamic signal test and analysis system and a computer software system. The resistive strain gauge and the acceleration sensor are arranged at key parts of an FPSO upper module model; the static strain test and analysis system and the dynamic signal test and analysis system are connected to the resistive strain gauge and the acceleration sensor respectively; a computer is provided with static strain and dynamic signal test and analysis system software and is connected with the static strain test and analysis system and the dynamic signal test and analysis system to collect and processtesting data. According to the invention, the overall dynamic mechanical test method for the FPSO upper module has advantages of wide application range, high efficiency, low cost, and high test accuracy.

Description

Technical field [0001] The invention relates to a FPSO upper module model test method under simulating extreme sea conditions, and belongs to the technical field of marine platform test. Background technique [0002] Floating production, storage, and offloading system (FPSO) is a modular and highly integrated high-end marine engineering equipment that integrates oil and gas production, storage and export. It is called an "offshore oil factory". Compared with other forms of oil production platforms, FPSO It has the advantages of strong resistance to wind and waves, a wide range of adaptable water depths, large storage / unloading capacity, and transferability and repeated use. [0003] With the increase in demand for offshore oil and gas, offshore oil and gas exploration and development are developing towards deep sea, ultra-deep sea areas and marginal oil fields. FPSO long-term mooring and positioning in offshore oil fields are required to withstand various complex and harsh sea cond...

AI Technical Summary

Problems solved by technology

As the key technical equipment of FPSO, the upper module is the key supporting connection structure between the upper module of FPSO and the main deck. It not only bears the huge gravity of the upper module, but also bears the loads of changing wind, waves, current and liquid cargo. The huge inertial force caused by the failure of the module pier structure will lead to the overall overturning of the upper module of the FPSO, seriously threatening the safety of offshore oil and gas production

[0004] At present, in the ocean engineering model test, in order to test the dynamic mechanical laws of the FPSO topside module under extreme sea conditions, only theoretical analysis and finite element simulation analysis are carried out, and the results and conclusions obtained are not sufficient. Verification, if the field test affects production safety, the test period is long, the cost is high, the test sea conditions are limited, and the guidance for the design, construction and installation of the FPSO upper module is not perfect

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