Anti-collision device for stand column oil tank in semi-submersible production platform

Abstract

The invention discloses an anti-collision device for a stand column oil tank in a semi-submersible production platform. The anti-collision device comprises an oil tank wall, an outer wall and a plurality of horizontal plates; the oil tank wall and the outer wall are sequentially arranged on the periphery of the oil tank from inside to outside, and the oil tank wall and the outer wall are connectedthrough the horizontal plate. The anti-collision device is small in occupied space, steel is saved, and oil substances stored in the multi-stand-column column column-stabilized platform stand columncan be stably protected in an anti-collision mode.

Description

technical field [0001] The invention relates to an anti-collision device for a column oil tank in a semi-submersible production platform, and belongs to the field of structural design of floating platforms in marine engineering. Background technique [0002] As the development of offshore oil and gas advances to deeper and farther seas, it will face the problem of how to dispose of the oil products produced in the production of gas fields. Due to the long offshore distance, it is not economical to build new pipelines for such oil products alone, or the surrounding pipeline network is not good enough. If it is suitable for oil transportation, it is necessary to store the produced oil products on the platform. In the production of deep-water gas fields, a column-stabilized platform in the form of multiple columns is a better choice, such as a semi-submersible platform. However, when oil products are stored on a semi-submersible platform, it is required to meet safety requireme...

AI Technical Summary

Problems solved by technology

[0003] The anti-collision structure of the isolation cabin will also be set around the oil tank of the traditional ship-type oil tanker, but this kind of column-stabilized platform in the form of multiple columns will be somewhat different when storing oil products in the columns, and will also encounter corresponding problems

In the anti-collision structure of the oil tank of the traditional oil tanker, due to the sufficient space in and around the tanker’s cabin, and also for the needs of load adjustment, etc., a relatively large space isolation compartment is set around the oil tank of the traditional ship type oil tanker, such as more than 4.5m , so that the structural design related to the oil bulkhead and the outer wall of the cofferdam can be provided with stiffeners and girders respectively; while the oil tank is installed in the column, compared with the tanker, the space of the column is small, and the width is generally 15-25m. If according to It is unrealistic to set up isolation compartments on both sides of the tanker, and there is not enough space, so innovation is needed to reduce the distance between the isolation compartments, too large a waste of space, too small to play the role of collision protection, and at the same time, due to the reduced space, the oil tank The structural design related to the outer wall of the cofferdam also needs to be innovated. If the girders are arranged separately on the outer wall of the oil bulkhead and the outer wall of the cofferdam according to the traditional method, the designed structure will be too dense, similar to "iron bumps", which is uneconomical and unreasonable. Inconvenient for arrangement of aggregates, welding, etc.

[0004] Therefore, in view of the demand for anti-collision around the column oil storage tank and its own characteristics, the traditional structural design method is either unable to meet the requirements, or it is obviously uneconomical or unreasonable. It needs to be based on the characteristics of the limited space of the column but still needs collision protection. A reasonable and economical anti-collision structure design scheme around the column oil storage tank is given to ensure the safe storage of oil products

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