摘要
深水立管中常会出现严重段塞流,如果不加以控制,会带来严重的流动安全问题。为此,对国内外深水立管严重段塞流控制方法进行了全面调研和分析,总结了每种控制方法的优缺点、现场应用情况和适用范围。在此基础上利用某深水油气田的海管和立管资料,采用多相流瞬态模拟软件OLGA模拟了典型年份的流动状况,对段塞流最严重年份分别采用节流法、气举法、节流和气举结合法等方法进行了模拟,并探讨了管径与段塞流的关系。结论认为:该油气田生产后期会出现严重段塞流;在管径优化和设计阶段要充分考虑严重段塞流的影响;不同的段塞流控制方法适用于不同的工况,针对具体深水工程项目,应在开展软件模拟分析时综合考虑各种因素,最终选取经济、有效的段塞流控制方法。
Severe slugging will easily occur in a deepwater riser.If not controlled,it will cause serious safety problems.Accordingly,a comprehensive research has been performed on the deepwater riser severe slugging control methods at home and abroad.The advantages,disadvantages,field application and application scope of them are summarized.The flow regimes of typical years are simulated by means of OLGA,a kind of multi-phase transient software,based on the submarine pipe and riser data of a certain deepwater oil and gas field.Choking,gas lift,and gas lift-choking methods are adopted to simulate the controlling of severe slugging in the most severe year.Moreover,the relationship between pipeline diameter and severe slugging is discussed.The studies demonstrate that severe slugging occurs in the mature stage of an oil or gas field.The influence of severe slugging should be fully considered in the phase of the pipe diameter optimization and design.Different controlling methods should be chosen according to different situations.For a specific deepwater project,various factors should be taken into consideration during software simulation in order to choose an economic and effective method for slugging control.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2011年第4期89-94,131-132,共6页
Natural Gas Industry
基金
国家重点基础研究发展计划(973计划)(编号:2009CB219507)资助项目
关键词
深水立管
严重段塞流
OLGA
节流
气举
管径
持液率
井口回压
deepwater riser,severe slugging,OLGA,choking,gas lift,pipeline diameter,liquid holdup,wellhead back pressure
