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关系整个埕岛海上油田生产命脉的输油(气)管道分布在海上石油的产区基本上处于较强侵蚀冲刷区,致使海区地形地貌复杂多变,海底管道电缆出露于海底,甚至海管电缆悬空现象大范围存在此区间内。因此,需要通过浅地层调查和工程地质钻探,确定目前海管、海缆路由地质特征,结合其它历史资料对这些海管、海缆进行安全评估。本文通过对利用水深测量系统对管道路由两侧水深情况进行水深测量;利用管线仪、侧扫声纳和磁力仪系统对海管位置、埋深进行探测;利用浅地层剖面探测系统对管道路由区浅表地层的状态进行探测;海管附近进行静力触探试验,分析地层厚度、岩土类别、地基土的承载力等参数的各类测绘技术进行阐述。
Oil and gas pipelines that affect the lifeblood of the entire Chengdao offshore oilfield are mainly located in areas with strong erosion and erosion at offshore oil producing areas. As a result, the topography of the sea area is complicated and changeable, submarine pipeline cables are exposed to the sea floor and even to the sea Large-scale cable dangling within this range. Therefore, it is necessary to conduct a safety assessment of these marine and submarine cables by means of shallow formation investigation and engineering geological drilling to determine the current geological features of the pipelines and submarine cables and to combine with other historical data. In this paper, the water depth measurement system is used to measure the water depth on both sides of the pipelines by using the water depth measurement system. The pipeline position and depth are detected by the pipeline instrument, the side-scan sonar and the magnetometer system. Superficial layer of the status of the detection; near the sea tube to conduct a static probe test, analysis of the formation thickness, rock type, bearing capacity of soil and other parameters of various types of mapping techniques are described.