长庆油田某页岩油管道停输再启动研究  

Research on Shutdown and Restart of a Shale Oil Pipeline in Changqing Oilfield

作　　者：张巧生 朱国承 杨飞[2] 郭生忠[3] 王斐 冯宇 ZHANG Qiaosheng;ZHU Guocheng;YANG Fei;GUO Shengzhong;WANG Fei;FENG Yu(Changqing Engineering Design Co.,Ltd.;College of Pipeline and Civil Engineering,China University of Petroleum(East China);Safety and Environmental Protection Supervision Department of Changqing Oilfield)

机构地区：[1]长庆工程设计有限公司 [2]中国石油大学(华东)储运与建筑工程学院 [3]长庆油田安全环保监督部

出　　处：《油气田地面工程》2024年第5期7-11,16,共6页Oil-Gas Field Surface Engineering

摘　　要：输油管道停输再启动是一项复杂的工程问题,为确保长庆油田某页岩油管道的运行安全,需对管道停输再启动开展研究。根据该页岩油管道的基础数据和所输页岩油的油品物性,利用SPS仿真软件对冬春季和夏秋季正常输送时管道的出站压力和进站油温进行计算分析,并对不同停输时间下管道的再启动过程进行模拟。研究发现:将管道进站油温高于原油凝点3℃时的停输时间确定为安全停输时间,在最高输量和最低输量条件下,管道冬春季的安全停输时间分别为28 h和3.5 h,推荐管道停输后再启动压力分别为6 MPa和3 MPa;针对最低输量下管道安全停输时间较短的情况,推荐在停输前加降凝剂处理,以延长管道安全停输时间;夏秋季安全停输时间均大于100 h,推荐管道停输后再启动压力为5.5 MPa和1.5 MPa。该研究结果为管道的稳态运行和停输再启动操作提供了参考。The shutdown and restart of oil pipeline is a complex engineering problem.In order to ensure the operation safety of the shale oil pipeline in Changqing Oilfield,it is necessary to conduct research on pipeline shutdown and restart.This article uses SPS simulation software to calculate and analyze the discharge pressure and inlet temperature of the oil pipeline during normal transportation conditions in four seasons according to the basic data of the shale oil pipeline and the oil properties of the shale oil.Meanwhile,the restart processes of pipelines under different shutdown times are simulated.According to research findings,the shutdown time when the inlet oil temperature of the pipeline is 3℃higher than the crude oil pour point is determined as the safe shutdown time.Under the conditions of maximum and minimum throughput,the safe shutdown time of the pipeline in winter and spring is 28 h and 3.5 h,respectively.The recommended restart pressure of the pipeline after shutdown is 6 MPa and 3 MPa,respectively.Based on the short safe shutdown time of the pipeline at the condition of lowest throughput,it is recommended to add coagulant treatment before shutdown to prolong the safe shutdown time of the pipeline.While the safe shutdown time in summer and autumn is greater than 100 h,the recommended restart pressure after pipeline shutdown is 5.5 MPa and 1.5 MPa,respectively.This research results provide a reference for the steady state operation and restart operation of the pipeline.

关 键 词：页岩油 安全停输时间 停输再启动 SPS软件 

分 类 号：TE832[石油与天然气工程—油气储运工程]