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With the development of the global economy, the growing human demand for energy. Submarine pipeline in the offshore oil and gas development process, is the main way for offshore oil and gas gathering and transportation, but its poor working conditions, failure accidents have occurred. Sea pipe failure not only affect the normal production of offshore oil and gas fields, and oil and gas leakage but also serious pollution of the marine environment, resulting in huge economic losses and adverse social impact, it is necessary to take effective measures to prevent the subsea pipeline failure. In recent years, distributed fiber sensing technology has many advantages in structural health monitoring has become an increasingly widespread. In order to be used in health monitoring of subsea pipeline, Zhejiang University, assumed the National 863 Program \real-time security monitoring. This study based on this topic, oilfield subsea pipeline in QK17-2 install the B-DOFS fiber sensing system based on the project, the design is complete and viable offshore construction program to achieve safe and effective placement of the monitoring system to the subsea pipeline and sea ??pipe during service to ensure that the system has sufficient reliability. This paper analyzes the problems of the lack of detection of a variety of domestic and foreign submarine pipeline, and distributed optical fiber sensing technology in the subsea pipeline monitoring, the difficulty in engineering applications, the gas blowing tube, tube paste method laid fiber-optic The basic idea of ??the somatosensory system. Fit than laboratory tests, long-distance microtubule vacuum grouting test selected for blowing fiber grouting method grouting material through the air blown fiber performance test, microtubule model and grouting materials, improve air blown fiber, vacuum grouting process, disposable air blown fiber, microtubule vacuum grouting distance over 500m target. The final design of a complete distributed optical fiber sensing system layout scheme, in practical engineering applications, and its economic feasibility analysis. The fiber optic sensor technology is the future direction of development of health monitoring, the subject of research for submarine pipeline, but the technology's applicability is not limited to the undersea pipeline, it can also be applied to the city water pipes, gas pipelines, bridges, dams and other structures health monitoring of the matter, the great development potential.
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