INTEGRATED SUBMARINE PIPELINE INVESTIGATION TECHNIQUES AND DF1-1 PIPELINE UNSAFETY FACTOR ANALYSIS
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摘要: 海底管道在海洋油气工业中发挥着重要作用,必须定期或适时检测管道状态以保障其安全运营,这是海底科学新的研究领域。介绍了海底管道综合调查技术(包括侧扫声纳、多波束测深、浅地层剖面等)的基本原理及其在东方1-1海底管道调查中的应用,并利用调查结果分析了威胁该管道安全的主要因素。调查结果表明,管道周围海床冲刷和沙波移动均可造成管道悬跨,威胁管道安全,并提出了加强安全监测建议。Abstract: Submarine pipelines play an important role in offshore oil and gas industries. It is necessary to investigate submarine pipelines regularly or timely to insure their safety. This paper introduces the fundamental principle of an integrated surveying system (including a dual-frequency side-scan sonar, a high resolution sub-bottom profiler, and a swath sounder system) and its application to investigating DF1-1 submarine pipeline. Some factors that threatened the safety of the pipeline were also analyzed. It was realized that both of moving sand waves and seabed scour around the pipeline ould cause the spanning of the pipeline, which severely threatens the safety of the pipeline.
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Key words:
- submarine pipeline /
- side-scan sonar /
- multi-beam echo sounder /
- sub-bottom profiler /
- scour
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