Steel catenary riser risk assessment method and equipment based on information fusion and medium

Abstract

The invention provides a steel catenary riser risk assessment method and device based on information fusion and a medium, and the method comprises the steps: building an identification frame in advance according to a fault mode of a steel catenary riser, and installing data sensors at fault collection points respectively to collect fault signals; then, multi-sensor data is preprocessed, and a corresponding basic probability distribution function is generated; a dynamic reliability index of multiple sensors is obtained through construction of an intuitionistic fuzzy multi-attribute decision model, on this basis, in a multi-evidence body information fusion algorithm of an improved mixed similar reasoning theory model (mixed DSm model), the conflict of evidences is reduced through solved focal element credibility, and the reliability of the multi-evidence body information fusion algorithm is improved. And the risk assessment of the steel catenary riser is realized according to the information fusion result. According to the method, on the basis of the sensor data condition of the existing riser monitoring system, high-efficiency, high-recognition-rate and high-adaptability risk assessment of the steel catenary riser is realized.

Description

technical field [0001] The invention belongs to the technical field of risk assessment of marine engineering equipment, and in particular relates to a risk assessment method, equipment and medium for a steel catenary riser based on information fusion. Background technique [0002] With the increasing demand for oil worldwide, people began to shift the focus of exploration and development from land to sea. Deep-sea floating oil and gas development systems represented by semi-submersible platforms, tension leg platforms, single-column platforms, and floating production storage and unloading devices have been widely used. The marine riser, as the transmission pipeline connecting the subsea production system and the offshore floating platform device, is one of the important components in all the above-mentioned floating oil and gas development systems. Among them, the steel catenary riser is excellent. It has been widely used and promoted because of its economy and practicabili...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of assessing the risks of steel catenary risers in oil and gas development, the present invention proposes a risk assessment method, equipment and medium for steel catenary risers based on information fusion

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