Umbilical Cable Recovery Load Analysis

• Published in: China ocean engineering Vol. 27; no. 3; pp. 351 - 358
• Main Author: 闫澍旺 贾沼霖 封晓伟 李世涛
• Format: Journal Article
• Language: English
• Published: Heidelberg Chinese Ocean Engineering Society 01.06.2013; School of Civil Engineering, Tianjin University, Tianjin 300072, China%China Offshore Oil Engineering Co.Ltd., COOEC, Tianjin 300452, China
• Subjects: Boundaries; Cables; China; Coastal Sciences; Engineering; Exploitation; Fluid- and Aerodynamics; Maintenance; Marine; Marine & Freshwater Sciences; Mathematical analysis; Natural gas; Numerical and Computational Physics; Oceanography; Offshore Engineering; Recovery; Simulation; 修理工作; 悬链线方程; 正常运行; 海底电缆; 海洋环境; 脐带电缆; 负荷分析; 负载计算; recovery load; umbilical cable; clay seabed; catenary equation; touch down point
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-013-0030-z

Umbilical cable is a kind of integrated subsea cable widely used in the exploration and exploitation of oil and gas field. The severe ocean environment makes great challenges to umbilical maintenance and repair work. Damaged umbilical is usually recovered for the regular operation of the offshore production system. Analysis on cables in essence is a two-point boundary problem. The tension load at the mudline must be known first, and then the recovery load and recovery angle on the vessel can be solved by use of catenary equation. The recovery analysis also involves umbilical- soil interaction and becomes more complicated. Calculation methods for recovery load of the exposed and buried umbilical are established and the relationship between the position of touch down point and the recovery load as well as the recovery angle and recovery load are analyzed. The analysis results provide a theoretical reference for offshore on-deck operation.