Plant for storage and unloading hydrocarbon and also a method thereof

A facility, oil and gas technology, applied to facilities and fields for storing and unloading oil and gas, can solve the problem of increasing ship movement, achieve the effect of avoiding wave energy accumulation effect, reducing wave energy, and less risk of installation

CN103946455AActive Publication Date: 2014-07-23GRAVIFLOAT AS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-07-23

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Abstract

This publication discloses a harbour plant (10) for storage, loading and unloading of hydrocarbon products at sea, comprising a number of units (9) being mutually placed on the seabed so that a harbour plant is formed. The units (9) are placed independently at a given distance apart in sideways direction and having a front surface along which a vessel is intended to be moored, forming passage(s) for parts of the waves, and being configured to dampen a part of the incoming waves while allowing other parts of the waves and current to pass through the harbour plant. The sideways distances between two neighbouring units (9) is governed by the frequency of the waves to be dampened and the frequencies of the waves allowed to pass in between the units (9). The front surface of one of the units (9) is offset with a distance relative to the front surfaces of two neighbouring in a traverse direction away from said incoming waves, and / or that the units are configured in such way that the width of the passage between two neighbouring units increases or decreases in direction of the wave motion.
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Description

field of invention

[0001] The present invention relates to the transport of oil and gas at sea, and more particularly to a device as stated in the preambles of the independent claims.

[0002] In more detail, the present invention relates to the installation and operation of seaport facilities for the storage and loading or unloading of oil and gas, such as liquefied natural gas, at a distance from the shore in shallow waters, where an optional facility for liquefied natural gas is built on shore storage unit or as a flotation unit for mooring.

[0003] More specifically, the present invention relates to a marine facility for storing, loading and unloading oil and gas products at sea, said marine facility comprising a plurality of units arranged alternately on the seabed to form a marine facility. The units are intended to be positioned independently, each unit being in spaced relation at a given distance D in the lateral direction and having a front surface along and against...

Examples

Embodiment Construction

[0086] It should be noted that in the following detailed description of the embodiments shown in the drawings, the same reference numerals are used for the same or similar structures and features.

[0087] figure 1 A top view of an embodiment of a harbor station 10 according to the invention is schematically shown. The shown harbor site comprises three identical units 11, 11' configured to remain stably on the seabed 12 due to gravity. Three units 11, 11' are placed on the seabed 12 at a distance Q apart, the middle unit 11' is also positioned in a retracted position relative to the two other units 11, with a retracted distance R, the middle unit 11 ' are retracted in the same direction as the general principal direction 13 of the wave. as further shown in figure 1 , the vessel 14 is moored along the intermediate unit 11' on the leeward side of the units 11, 11'. The mooring system used to moor the vessel 14 to the units 11, 11' comprises one or more forward mooring l...