Method for monitoring anchoring line of deep-sea terrace

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...

AI Technical Summary

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 the mooring line to break, and the long-term relaxation-tensioning process of the mooring line will cause the fatigue of the mooring line destroy

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