Method for monitoring anchoring line of deep-sea terrace

A mooring and platform technology, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve problems such as mooring line breakage and mooring line fatigue damage, so as to improve safety level and reduce major accidents the effect of

Inactive Publication Date: 2010-05-19
TIANJIN UNIV
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Problems solved by technology

During the relaxation-tensioning process of the mooring line, the mooring line produces an impact and a very large tension occurs, which will cause

Method used

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  • Method for monitoring anchoring line of deep-sea terrace
  • Method for monitoring anchoring line of deep-sea terrace
  • Method for monitoring anchoring line of deep-sea terrace

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specific Embodiment approach

[0020] The main body of the platform is a cylinder suspended vertically in the water, with an overall diameter of about 20-35 meters. The inside of the huge main body is divided into multi-layer and multi-cabin structures by vertical waterproof bulkheads and horizontal decks, and has its own functions. . The mooring system is composed of mooring cables, fairleads, chain hoists and seabed foundations, and mainly realizes the positioning and movement constraints of the main body of the platform. For the prediction and control of the impact tension of the mooring line of the platform, the specific implementation methods are as follows:

[0021] 1. Install a displacement sensor at the height of the center of gravity of the platform to monitor the movement of the main body of the platform in real time 0 At the same time, strain sensors are arranged on the mooring line to monitor the strain of the mooring line, and the platform motion displacement and mooring line strain data are c...

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Abstract

The invention belongs to the technical field of offshore oil and natural gas exploitation equipment safety monitoring and risk control, and relates to a method for monitoring anchoring line of deep-sea terrace. The method comprises the following steps: (1) installing a displacement transducer on the position of height of gravitational center of the terrace to monitor the motion displacement U0 of the terrace main body in real time, arranging a strain transducer on the anchoring line to monitor the strain of the anchoring line in real time and transmitting the monitoring data to a central computer; (2) calculating and analyzing whether the anchoring line appears relaxed-tensioned state; (3) calculating and analyzing dynamic tension; (4) comparing the calculated dynamic tension with the fracture tension of the anchoring line, judging whether the tension of the anchoring line is within the safe range, if not, implementing adjustment; (5) if needing adjustment, commanding the adjustment value of the anchoring line to each anchor gear, starting and controlling each anchor gear, adjusting the length of the anchoring line, and calculating whether the adjusted length of the anchoring line meets the requirement, if not, repeating the step. The invention can realize control on state and tension of the terrace anchoring line, can enhance the safety level of the terrace system and can reduce occurrence of grave accidents.

Description

technical field [0001] The invention belongs to the technical field of safety monitoring and risk control of offshore oil and gas exploitation equipment, and relates to a mooring line monitoring method of a deep sea platform. Background technique [0002] At present, rich oil and natural gas have been discovered in the deep sea with a water depth of more than 1000 meters. For the exploitation of oil and natural gas, the classic Spar platform or trussed Spar platform is currently used, such as figure 1 with figure 2 As shown, the important part related to the safety of this structure is the mooring line, whose function is to fix the structure in the deep sea. Once the mooring line breaks down or breaks, the entire platform system will lose its operating function and be severely damaged. Destroyed people" major disaster accident. [0003] The invention proposes a monitoring and control technology related to the safety of the mooring line, which can monitor the tightness and...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 唐友刚张素侠张若瑜
Owner TIANJIN UNIV
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