海底输油气管道维护性检测中的工程物探技术

Geophysical technique applied in the maintenance detection of undersea oil & gas pipeline

崔征科

Cui Zhengke

中国石油化工集团公司上海海洋石油局第一海洋地质调查大队, 上海 201208

No.1 Party of Marine Geology Investigation, Shanghai Offshore Petroleum Bureau SINOPEC, Shanghai 201208, China

海底输油气管道穿越地形地貌复杂、水动力作用强烈、风暴潮影响明显的群岛及河口海湾水域时, 因地质灾害诱发的海管断裂、原油外泄事故已有先例。定期或实时对海管路由区段进行维护性检测是石油天然气作业公司的既定程序。文章详细叙述了海底输油气管道维护性检测中的工程物探技术, 实践证明"精密回声测深"、"旁侧声纳扫描"、"高分辨率浅层剖面"、"高精度导航定位"等方法具有明显效果。

Undersea pipeline failure and crude oil leakage existed due to geological disaster when undersea oil & gas pipeline crossed the complicated areas, such as complex undersea topography, morphology, strong current, areas near islands and estuary where wind, current and fide effected obviously. Hence, routine and due maintenance detection of pipeline route survey should be carried out by oil & gas operation company. This paper illustrates geophysical technique applied in maintenance detection of undersea pipeline, and the practice shows that accurate echo-sounder survey, sidescan survey and high resolution subbottom seismic profile and accurate navigation and positioning system is the good method to solve the problem.