Planning and design method for polyester fiber tension type mooring system

A technology of polyester fiber and mooring system, applied in the field of deep water marine engineering, can solve the problem of not providing mooring system and so on

Active Publication Date: 2017-11-17
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current design codes for various mooring system checks only provide the technical indicators that the mooring system should meet under the action of extreme environments, such as the maxim

Method used

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  • Planning and design method for polyester fiber tension type mooring system
  • Planning and design method for polyester fiber tension type mooring system
  • Planning and design method for polyester fiber tension type mooring system

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0050] The present invention uses a normal load-bearing anchor as a foundation, so the anchor point will bear a vertically upward load. Such as figure 1 As shown, the planning and design method of the polyester fiber tension type mooring system provided by the present invention comprises the following steps:

[0051] 1. Select a polyester fiber cable and anchor chain of a certain specification as the material for each cable segment in the mooring system, and determine the segmental structure of each cable in the mooring system. The specific process is as follows:

[0052] 1) Select a polyester fiber cable of a certain specification, and obtain the upper limit, lower l...

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Abstract

The invention relates to a planning and design method for a polyester fiber tension type mooring system. The method is characterized by comprising the following steps that 1, a polyester fiber cable and anchor chain of certain specification are selected as materials of segments of each cable in the mooring system, and the segmental structure of each cable in the mooring system is determined; 2, initial mooring system general arrangement of an offshore platform is given, and a return stiffness curve of the offshore platform in the horizontal offset direction is obtained according to the determined segmental structure of each cable; 3, inspection is conducted on the given initial mooring system general arrangement under the extreme environment according to the obtained return stiffness curve, and then mooring system general arrangement meeting the technical requirements is obtained. Accordingly, the workload that when the initial scheme is designed, multiple design parameters of the mooring system are subjected to trial calculation and adjustment repeatedly can be reduced, and the method can be widely applied to the field of deep-water marine engineering.

Description

technical field [0001] The invention relates to a planning and design method for a tensioned polyester fiber mooring system, which belongs to the field of deep-water marine engineering. Background technique [0002] As human exploration and development activities for offshore oil and gas gradually move towards deep water, positioning technology develops rapidly, and the original catenary mooring system is gradually replaced by the tension mooring system. The main advantages of the tension mooring system include positioning accuracy Lifting, material saving, smaller mooring system radius, pre-tension and reduction of equipment specifications and easy installation, etc. The materials of tension mooring system ropes include polyester fiber, high-strength polyethylene and nylon, among which polyester fiber material is the most used. When polyester fiber is used as the mooring material, the recovery force of the cable mainly comes from its axial deformation, and the cable itself...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F2119/06
Inventor 赵晶瑞谢彬王世圣
Owner CHINA NAT OFFSHORE OIL CORP
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