A model test method for fpso topside module simulating extreme sea conditions

Abstract

The invention relates to a model test method for the FPSO upper module under simulating extreme sea conditions, which mainly consists of the overall model of the FPSO upper module, an electric six-degree-of-freedom platform, a control system operating platform, a testing system working platform, a motion monitoring platform, a supporting platform, and a protective fence , resistive strain gauge, acceleration sensor, static strain, dynamic signal test and analysis system and computer software system; said resistive strain gauge and acceleration sensor are arranged in key parts of FPSO upper module model, said static strain test and analysis system and dynamic The signal test and analysis system is respectively connected to the resistance strain gauge and the acceleration sensor, and the computer is installed with static strain and dynamic signal test and analysis system software to connect the static strain test and analysis system and the dynamic signal test and analysis system to collect and process test data. The invented FPSO upper module overall dynamic mechanics test method has a wide range of applications, high efficiency and low cost, and high test accuracy.

Description

technical field [0001] The invention relates to a model test method for an FPSO upper module under simulating extreme sea conditions, and belongs to the technical field of offshore platform tests. Background technique [0002] Floating production, storage and offloading system (FPSO) is a modular and highly integrated high-end offshore engineering equipment integrating oil and gas production, storage and export. It is called "offshore oil factory". Compared with other forms of oil production platforms, FPSO It has the advantages of strong wind and wave resistance, wide water depth range, large oil storage / unloading capacity, 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 and marginal oil fields. FPSO is long-term moored and positioned in offshore oil fields, and it is required to be able to withstand various complex and harsh sea ...

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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