停输压力对胶凝原油管道启动特性的影响  

Effect of shutdown pressure on restart-up behaviors of gelled crude oil pipeline

作　　者：李璐 刘刚[2] 滕厚兴[2] 陈雷[2] 卢兴国[2] 李爽 张淇[2] LI Lu LIU Gang TENG Houxing CHEN Lei LU Xingguo LI Shuang ZHANG Qi(Qingdao Energy Huartm Gas Co. Ltd. China University of Petroleum （Huadong）/Key Laboratory for Oil ＆ Gas Storage and Transportation Safety of Shandong Province Qingdao Energy Huartm Gas Co. Ltd. ＆ North Gas Company of Taineng)

机构地区：[1]青岛能源华润燃气有限公司 [2]中国石油大学(华东)/山东省油气储运安全省级重点实验室 [3]青岛能源华润燃气有限公司泰能北部燃气分公司

出　　处：《油气储运》2016年第12期1300-1305,共6页Oil & Gas Storage and Transportation

基　　金：国家自然科学基金项目"胶凝原油管道启动问题中关键非定常参量研究";51574274;山东省优秀中青年科学家科研奖励基金"含蜡原油非线性黏弹特性研究";2014BSE28055;中央高校基本科研业务费专项资金"含蜡原油管道停输再启动若干基础问题研究";15CX02040A;中央高校基本科研业务费专项资金"含蜡原油粘弹特性对管道启动";Y1515004

摘　　要：管道停输时,因地形起伏等因素管内难免存在压力,从而影响管道的启动特性。基于胶凝原油环道试验,采用3种加压方式探究不同停输压力对胶凝原油管道再启动特性的影响规律:1管道首段瞬时加压后密闭管道并恒温静置;2管道恒温静置过程中,在管道首段持续施加不同恒定压力;3管道首段持续加压特定时间后,密闭管道并恒温静置。分别开展管道再启动实验,计算管道启动屈服应力。分析表明:瞬时加压时,管道启动屈服应力随着加压压力的增加而增大;持续加压时,管道启动屈服应力随加压压力的增加而先增大后减小;加压时间对屈服应力也有一定影响。研究结果可为保障原油管道安全、高效运行提供技术支持。When a pipeline is shut down, it is inevitably under pressure due to topographic relief, which affects its restart- up behaviors. In this paper, gelled-crude-oil loop experiments were performed by employing three pressurization ways to investigate the effect of different shutdown pressures on the restart-up behaviors of gelled crude oil pipeline. First, after transient pressure is applied on the inlet, the pipeline is sealed and kept still at constant temperature. Second, different constant pressures are applied on the inlet continuously while the pipeline rests at constant temperature. And third, the pipeline is sealed and kept still at constant temperature after the inlet is pressurized continuously for a stipulated period. Then, pipeline restart-up pressure was tested and the corresponding yield stress was calculated. It is indicated that the restart-up yield stress increases with the increasing of pressure, when the pressure is applied transiently; the yield stress increases and then decreases as the pressure increases, when the pressure is applied continuously. Moreover, the yield stress is, in a way, affected by the pressurization time. The research result provides the technical support for the safe and efficient operation ofoil pipelines. （5 Figures, 3 Tables, 14 References）

关 键 词：胶凝原油 试验环道 停输再启动 屈服应力 停输压力 

分 类 号：TE832[石油与天然气工程—油气储运工程]