a semi-submersible platform

A platform, horizontal technology, applied in the direction of ships, floating buildings, etc., can solve the problems of structural fatigue of the bottom floating box, increased overall weight of the platform, small cross-sectional area of ​​the column, etc., so as to reduce the weight and the height of the center of gravity, volume and bottom area. Large, increased area effect

CN112078739BActive Publication Date: 2022-03-04CHINA NAT OFFSHORE OIL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-03-04

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Abstract

The invention discloses a semi-submersible platform, which is mainly suitable for floating offshore oil and gas production platforms, drilling and workover platforms, or living support platforms that do not require high oil storage capacity. The base pontoon floating on the sea is vertically distributed with columns and deck boxes in sequence. The base pontoon, column and deck box are connected as a whole and form a through hole communicating with seawater in the vertical direction. Pool, the semi-submersible platform of the present invention adopts an integral structure, which effectively avoids the air gap problem existing in the conventional column-type semi-submersible platform, can reduce the height of the column, reduce the weight of the platform and the height of the center of gravity, and improve the stability of the semi-submersible platform. The cross-sectional area of ​​the column along the horizontal direction is smaller than the area of ​​any cross-section of the deck box along the horizontal direction. The deck box with the floating design increases the area of ​​the top of the deck box and changes the direction of wave climbing. The large-volume base pontoon further improves the semi-submersible platform. stability.
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Description

technical field

[0001] The invention relates to a semi-submersible platform, which relates to the field of semi-submersible platforms of marine engineering. Background technique

[0002] With the continuous development of deep-sea oil and gas fields, the traditional gravity platform and jacket platform can no longer meet the requirements of deep-sea oil and gas development because of their dead weight and cost increase with the increase of water depth. They have been replaced by floating production systems. At present, the semi-submersible platform is widely used in the field of ocean engineering. Because of its good seakeeping performance, small motion response, wide working water depth range, strong wind and wave resistance, large deck area and strong loading capacity, it can be used as an offshore drilling platform, Oil and gas production platforms and life support platforms, etc.

[0003] Conventional semi-submersible platforms usually use bottom pontoons and several co...

Examples

Embodiment Construction

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] In the following discussion, details are given in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In certain examples, in order to avoid confusion with the present invention, some technical features known in the art are not described in detail. It should be understood that the terms "upper", "lower", "front", "rear", "horizontal", "longitudinal" and similar expressions used herein are for the...