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| 海底管道立管系统弯管段流场分析——以胜利油田CB 306井组平台为例 | |
| 引用本文： | 刘立成,陈建民,姜汉桥,洪学福.海底管道立管系统弯管段流场分析——以胜利油田CB 306井组平台为例[J].中国海上油气,2006,18(4):285-288. |
| 作者姓名： | 刘立成 陈建民 姜汉桥 洪学福 |
| 作者单位： | 1. 中国石油大学(北京)石油天然气工程学院 2. 中国石油大学(华东)石油工程学院 3. 胜利石油管理局钻井工艺研究院海洋所 |
| 摘 要： | 以胜利油田CB 306井组平台为例,运用大涡模拟(LES)方法对海底管道立管系统弯管段周围流场进行了模拟分析,结果表明海流流速在立管两侧增大,在立管后方形成交替脱落的漩涡;立管后方形成的三维立涡成倒锥形,上部漩涡比下部漩涡先脱离立管;三维立涡底部海水对海底的剪切作用及对海底沉积物的提升作用最强,这也是海底冲淘作用不断加剧的根本原因. |
| 关 键 词： | 立管系统弯管段 流场分析 大涡模拟 三维立涡 海底冲淘 CB 306井组平台 胜利油田 |
| 修稿时间： | 2006年1月7日 |
Analysis of flow around the elbow in riser system of subsea pipeline:a case study of CB 306well group platform in Shengli oilfield |
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| Liu Licheng,Chen Jianmin,Jiang Hanqiao,Hong Xuefu.Analysis of flow around the elbow in riser system of subsea pipeline:a case study of CB 306well group platform in Shengli oilfield[J].China Offshore Oil and Gas,2006,18(4):285-288. | |
| Authors: | Liu Licheng Chen Jianmin Jiang Hanqiao Hong Xuefu |
| Abstract: | Using the large eddy simulation(LES) technique,simulation of the flow field around the elbow in riser system of subsea pipeline is conducted as a case study of CB 306 well group platform in Shengli oilfield.The results show that the velocity of ocean current is enhanced both sides of riser and alternately shed vortex are formed after riser;3D stand vortex behind riser likes headstand cone;the topside vortex shed earlier than underside from the riser.The shear action and lifting affect on sediments of subsea are most powerful on the bottom of 3D stand vortex.That is the main reason of seabed scouring being intensified continuously. |
| Keywords: | elbow in riser system flow field analysis large eddy simulation(LES) 3D stand vortex seabed scouring CB 306 well group platform Shengli oilfield |
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