海上外输软管方案比选

Comparison and Selection of Offshore Off-Loading Hose Plant

李飞 朱梦影 程涛 孔冰

LI Fei ZHU Mengying CHENG Tao KONG Bing

中海石油（中国）有限公司蓬勃作业公司，天津　300459 中海石油（中国）有限公司天津分公司渤海石油研究院，天津　300459

Pengbo Operating Company of CNOOC Ltd., Tianjin 300452, China Bohai Oil Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300452, China

外输软管是全海式油田生产系统中连接FPSO和提油轮的通道，在使用过程中如果操作失误或者控制系统失灵会导致阀门急速关闭从而引起水击，对外输系统安全和海洋环境造成威胁。某油田外输海管由于事故造成损伤，需要重新更换。对外输软管设计的三个方案进行比选研究，通过水力计算选择适宜的配置方案，利用HYSYS和PVT Sim软件建立流体包，使用OLGA对三个方案四种工况下正常操作和事故情况时最大水击压力进行模拟计算。研究发现，20″软管和16″软管构成的单路软管系统设置简单，满足4 500 m3/h流量下正常工况和事故工况安全操作要求，为了确保安全，外输软管系统需要设置爆破片。

The off-loading hose is the channel connecting FPSO and tanker in the production system of all-sea oilfield. If the operation fails or the control system fails, the valve will be closed rapidly, which will cause water hammer and threaten the safety of the off-loading system and the marine environment. Due to the accident, the offshore pipeline of an oilfield was damaged and needs to be replaced again. Three plants of oilfield off-loading hose are compared and studied, and an appropriate configuration plant is selected through hydraulic calculation. HYSYS and PVT Sim software were used to build the fluid package, and OLGA was used to simulate the maximum surge pressure under normal operation and accident conditions of three schemes under four working conditions. It is found that the single hose system consisting of 20-inch hose and 16-inch hose is simple to set up and meets the safety operation requirements of normal and accident conditions at a flow rate of 4500 m3/h. Besides, blasting discs need to be set up to ensure the safety of the off-loading system.

国家科技重大专项“渤海油田高效开发示范工程”（2016ZX05058004-003）

https://doi.org/10.3969/j.issn.1008-2336.2020.03.110