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A hybrid mooring system and mooring method for ultra-deep water floating structures

A mooring system and water-floating technology, applied in the field of offshore oil and gas development, can solve the problems of high cost, heavy weight and complex technology, and achieve the effects of light weight, weight reduction and simple technology

Active Publication Date: 2015-10-28
佛山市榕岸海洋工程装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of heavy weight, high cost and complicated technology in the prior art, and propose a floating structure in ultra-deep water (below 3000m deep water) with light system weight, simple technology and low cost. Hybrid mooring system and its mooring method

Method used

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  • A hybrid mooring system and mooring method for ultra-deep water floating structures

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Embodiment Construction

[0022] see figure 1 and figure 2 As shown, the present invention includes an ocean platform 2 floating on the sea level 1, and a control module 7, a GPS 8, a support 3, and a winch 4 are installed on the ocean platform 2. One end of the tensioned mooring cable 10 is fixed to the seabed 13 through the first seabed anchor 11 , and the other end is connected to the winch 4 of the offshore platform 2 . A first tension sensor 6 is installed on the tensioned tether 10 . One end of the catenary type mooring cable 9 is fixed on the seabed 13 by the second seabed anchor 12, and the other end is connected on the support 3, and the second tension sensor 5 is housed on the catenary type mooring cable 9.

[0023] The control module 7 is respectively connected with the GPS 8 , the first tension sensor 6 , the second tension sensor 5 and controls the action of the winch 4 . The GPS 8 is used to measure the real-time motion response value of the ocean platform 2 , and the control module ...

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Abstract

The invention discloses a hybrid mooring system and mooring method for ultra-deep water floating structures in the field of marine engineering oil and gas development. GPS records the motion response value of the ocean platform in real time. When a reasonable response value is set, it is judged that the current sea state is an ordinary sea state, otherwise it is an extreme sea state; when the extreme sea state is used, the tension type mooring cable is pulled, and the second tension sensor will transmit the tension A on the catenary type mooring cable, the first tension sensor The tension B on the tensioned tether is transmitted to the control module, and the control module passes the formula? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Calculate the C value, if the C value is less than the preset reasonable difference, then keep the length of the tensioned mooring cable unchanged, otherwise, compare the tension A and B, if A <b,放松张紧式系缆的长度，如果a>B, shrinking the length of the tensioning mooring cable; the invention automatically completes the intelligent switching between the single catenary mooring system and the mixed mooring system, which is simple and convenient.< / b,放松张紧式系缆的长度，如果a>

Description

technical field [0001] The invention relates to a mooring system, in particular to a mooring system for ultra-deep water floating structures, and belongs to the field of marine engineering oil and gas development. Background technique [0002] More than 80% of the world's marine oil reserves are concentrated within a water depth of 500m, but more than 70% of the ocean area is between 3000m and 6000m, and a large amount of sea area remains to be proven. At present, except for a few sea areas, the offshore oil and gas resources in most areas have been gradually exhausted, and the development of deep sea has become an inevitable trend. The main problems encountered in the development of oil and gas resources in the deep sea are: the marine environment in the deep sea is harsher, and the environmental load is greater. Whether it is for a drilling platform or a production platform, in the deep sea environment, the mooring system is to ensure the offshore platform. Important equi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B21/50B63B21/16
Inventor 朱建窦培林陈刚袁洪涛施兴华孔令海
Owner 佛山市榕岸海洋工程装备有限公司
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