Docking round platform floating production storage system

Abstract

The invention discloses a butt joint circular table type floating production oil storage system. According to the oil storage system, a floating body is provided with an upper part structural body which is in a circular table shape and a lower part structural body which is in a circular table shape; in a combined state, the bottom surface, which has a small area, of the upper part structural body is fixedly connected with the bottom surface, which has a small area, of the lower part structural body to form a connecting surface serving as a fully-loaded waterline plane of a floating type structure; and on the basis of the combined state, functional modules for mooring positioning, oil and gas production, storage, outward conveying and the like are arranged to form the novel floating production oil storage system. The floating body has the characteristic of being similar to the appearance of a sandy clock, and can overcome the defects of aspects of seakeeping capacity, strength fatigue, the arrangement of pipelines and the like in the conventional floating production oil storage system and expand the performance of the conventional floating production oil storage system. Therefore, the butt joint circular table type floating production oil storage system can realize the integration of multiple functions of well drilling, mining, storage, production, processing, outward conveying and the like of large-scale oil and gas in various sea areas easily, and has a good economic benefit.

Description

technical field [0001] The invention relates to patent classification B63 Ships or other water craft; Ship-related equipment B63B Ships or other water craft; Marine equipment B63B35 / 00 Ships suitable for special purposes or similar floating structures B63B35 / 44 Floating structures, water Tanks, water drilling platforms or water workshops, such as those carrying oil-water separation equipment. Background technique [0002] In the field of marine engineering, the Floating Production Storage and Offloading system (FPSO for short) is an offshore oil and gas processing system that integrates oil and gas processing, oil storage and offloading, heating, power generation, control, and living functions. With the advantages of high strength and wide applicability, it has gradually become the mainstream method of offshore oilfield development in the world. [0003] Usually, the FPSO system mainly includes various modules such as floating main body, mooring positioning, oil storage and...

AI Technical Summary

Problems solved by technology

[0005] 1. The natural period of the heave of the traditional ship-type FPSO is difficult to stay away from the area where the wave energy is concentrated, and the amplitude of the heave motion is relatively large

In addition, the ship-type FPSO is very sensitive to the direction of wave action, and the lateral head wave area is too large, so the rolling motion performance is poor

These will seriously affect the normal operation of various equipment and instruments of FPSO, as well as the quality of crude oil produced and the comfort of personnel

[0006] 2. Although the single point mooring system equipped with internal turret and fluid joints can make the traditional ship type FPSO have a windvane effect of 360o all-round free rotation, severe yaw motion will not only affect the normal operation of many operations, but also Severe wear on the inner turret and fluid connections, requiring frequent maintenance

Therefore, the expensive price of the internal turret and fluid joints themselves, as well as the existence of potential downtime, will greatly increase production costs

[0007] 3. The longitudinal scale of the traditional ship-type FPSO is relatively large, and the corresponding longitudinal bowing and sagging bending loads are large, making the floating body vulnerable to bending and fatigue damage

Therefore, in order to meet the requirements of strength and fatigue load, local reinforcement is generally required, which increases the cost of FPSO

[0008] 4. The slender buoys and decks of traditional ship-type FPSO will increase the length and layout difficulty of connecting piping systems among many functional modules, thus potentially increasing construction and maintenance costs

However, at the same time, there are many shortcomings in its performance: the heaving motion of the floating body is large, which is easy to cause vortex-induced vibration, the deck area is small, the living and working spaces are too close, and it is not conducive to the separation of dangerous areas and non-dangerous areas, etc.

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