戴国华　王万旭　陈丰波　金秋　高阳　王海涛

摘要：集束海纜为海上石油开发平台的重要装备，具有截面大、结构复杂、敷设路径长，敷设环境多变等特征。多变的敷设环境使得集束海缆温升及额定载流量受到诸多环境因素的影响。通过多物理场有限元软件，在考虑太阳光辐射照度及潮汐水位等自然因素的前提下，对集束海缆温升及额定载流量进行计算和分析，可以得出：J形管敷设段为集束海缆额定载流量的瓶颈段;环境因素中，潮汐涨落引起的水位变化会对集束海缆瓶颈段额定载流量造成影响，水位越高其额定载流量也越高，反之则越低;太阳光辐照是降低集束海缆额定载流量的主要自然因素，随着太阳光辐照的增强，瓶颈段集束海缆额定载流量快速下降，下降幅度最高超过30%，水位与光照复合作用下，额定载流量下降幅度超过40%。通过利用小功率水泵向J形管内注水，能够有效改善环境因素对集束海缆额定载流量的影响，提高集束海缆瓶颈段载流量。

关键词：集束海缆;额定载流量;环境因素;潮汐;辐照

DOI：10.15938/j.jhust.2022.04.010

中图分类号： TM11

文献标志码： A

文章编号： 1007-2683（2022）04-0072-09

Research on Temperature Field and Ampacity of the Bottleneck

Section of the Bundled Submarine Cable in Marginal Oilfields

DAI Guo-hua WANG Wan-xu CHEN Feng-bo JIN Qiu GAO Yang WANG Hai-tao

（1.CNOOC （China） Co.，Ltd. Tianjin Branch，Tianjin 300000，China;

2.Zhongtian Technology Submarine Cable Co.， Ltd， Nantong 226000，China）

Abstract：The cluster submarine cable is an important equipment for the offshore oil development platform， which has the characteristics of large cross-section， complex structure， long laying path and complex and changeable characteristics. The complex and changeable laying environment makes the rated current carrying capacity of the cluster submarine cable affected by many environmental factors. Through multi-physics finite element software， the rated current carrying capacity of the cluster submarine cable is calculated and analyzed considering many natural factors. It can be concluded that the J-shaped pipe laying section is the bottleneck section of the rated current carrying capacity of the cluster submarine cable. Among environmental factors， the water level changes caused by tidal fluctuations will affect the rated current carrying capacity of the bottleneck section of the cluster submarine cable. The higher the water level， the higher the rated current carrying capacity， and vice versa. The main natural factor of the current carrying capacity， with the increase of sunlight irradiation， the rated current carrying capacity of the cluster submarine cable in the bottleneck section drops rapidly， and the maximum drop rate exceeds 30%. By using a low-power pump to inject water into the J-shaped pipe， the influence of environmental factors on the rated current carrying capacity of the cluster submarine cable can be effectively improved， and the current capacity of the bottleneck section of the cluster submarine cable can be effectively improved.

Keywords：clustered submarine cable; ampacity; environmental factors; tides; irradiation

0引言

近几十年来，世界海洋石油工业得到了飞速发展，预计未来海洋石油产业将提供全球石油总产量约40%的份额，边际油田开发则为行业发展过程中的一个重要难题。所谓边际油田是指储量规模小、按照目前常规的方法开发，其经济效益将有很大可能达不到预定的收益目标底线的油田[1]。……