上倾管内油水两相流流型实验研究

doi:10.11885/j.issn.1674-5086.2018.05.30.01

西南石油大学学报(自然科学版) ›› 2019, Vol. 41 ›› Issue (4): 144-151.DOI: 10.11885/j.issn.1674-5086.2018.05.30.01

上倾管内油水两相流流型实验研究

朱珊珊¹, 牟星洁², 李旺³, 宋晓琴¹, 古丽³

1. 西南石油大学石油与天然气工程学院, 四川成都 610500;
2. 中国石化西南石油工程有限公司井下作业分公司, 四川德阳 618000;
3. 中国石油天然气股份有限公司西南管道分公司, 四川成都 610041

收稿日期:2018-05-30 出版日期:2019-08-10 发布日期:2019-08-10
通讯作者: 宋晓琴,E-mail:2546873993@qq.com
作者简介:朱珊珊,1980年生,女,汉族,四川阆中人,讲师,主要从事油气管网腐蚀与控制及多相流研究。E-mail:76095976@qq.com;牟星洁,1994年生,女,汉族,四川泸州人,硕士研究生,主要从事油气管网腐蚀与控制及多相流研究。E-mail:863820477@qq.com;李旺,1986年生,男,汉族,黑龙江哈尔滨人,高级工程师,主要从事油气长距离管输技术、数值计算方法研究。E-mail:liwang3328@petrochina.com.cn;宋晓琴,1966年生,女,汉族,四川都江堰人,教授,主要从事油气管网腐蚀与控制及多相流研究。E-mail:2546873993@qq.com;古丽,1987年生,女,汉族,新疆昌吉人,工程师,主要从事工艺设备方面的研究工作。E-mail:gul@petrochina.com.cn
基金资助:
国家自然科学基金（51474183）

An Experimental Study on the Flow Patterns of Oil-water Two-phase Flow in an Upwardly Inclined Pipe

ZHU Shanshan¹, MOU Xingjie², LI Wang³, SONG Xiaoqin¹, GU Li³

1. ?School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Downhole Operation Company, Xinan Oilfield Service Corporation, SINOPEC, Deyang, Sichuan 618000, China;
3. Southwest Pipeline Company, CNPC, Chengdu, Sichuan 610041, China

Received:2018-05-30 Online:2019-08-10 Published:2019-08-10

摘要/Abstract

摘要： 国内多条成品油输送管道在投产和运行过程中，采用“水联运”投产方式所造成的上倾管道低洼处积水现象引起了严重的管道内腐蚀问题。利用上游来油将低洼处积水携出管道能有效缓解内腐蚀。采用0#柴油、去离子水在内径100 mm的上倾管道内观察油水两相流流型并测量油携水临界流速。结果表明，随油流黏性力增大和管道倾角增大，油水两相流依次呈现波状分层流、有水滴的波状分层流和油相占主导的分散流3种流型；同一流型下，油相能将水相携入上倾段的最低临界流速随倾角增大而增大；倾角从20°增大到25°使流型从波状分层流转化为有液滴的波状分层流时，油相能将水相携入上倾段的临界流速从0.203 m/s减小为0.187 m/s；倾角从30°增大至35°时，使初始流型从有液滴的波状分层流转换为水相在油相中的分散流，油相能将水相携入上倾段的临界流速从0.205 m/s减小为0.194 m/s；油相能将水相完全携出上倾段的临界流速随倾角增大而略有增大；发生流型转化的流速随倾角增大而减小。

关键词: 油水两相流, 上倾管道, 流型, 临界流速

Abstract: During the commissioning and operation of a large number of refined oil pipelines in China, it was found that water accumulation at low points in upwardly inclined pipelines caused by the adoption of water circulation for commissioning resulted in serious corrosion problems within these pipelines. Inflows of oil from the upstream sections can be used to carry away the water from the low points and effectively alleviate internal corrosion. In the present study, 0# diesel fuel and deionized water were used to observe oil-water two-phase flow patterns in an upwardly inclined pipeline with an internal diameter of 100 mm and the measurement of the critical water-carrying velocity of oil. The results show that as the oil viscosity and upward inclination angle of the pipeline increases, three types of flow patterns are sequentially induced in the oil-water two-phase flow, namely, stratified wavy flow, stratified wavy flow with water droplets, and oil-dominated dispersed flow. Within the same flow pattern, the minimum critical velocity for the oil phase to carry the water phase into the upwardly inclined section increases with an increase in inclination angle. When the inclination angle increases from 20° to 25°, the flow pattern transitions from stratified wavy flow to stratified wavy flow with liquid droplets, and the minimum critical velocity for the oil phase to carry the water phase into the upwardly inclined section decreases from 0.203 m/s to 0.187 m/s. When the upward inclination angle increases from 30° to 35°, the initial flow pattern transitions from stratified wavy flow with liquid droplets to water-in-oil dispersed flow, and the minimum critical velocity for the oil phase to carry the water phase into the upwardly inclined section decreases from 0.205 m/s to 0.194 m/s. An increase in the inclination angle causes a slight increase in the minimum critical velocity for the oil phase to fully carry the water phase away from the upwardly inclined section, while causing a reduction in the velocity at which flow pattern transitions occur.

Key words: oil-water two-phase flow, upwardly inclined pipeline, flow pattern, critical velocity

中图分类号:

朱珊珊, 牟星洁, 李旺, 宋晓琴, 古丽. 上倾管内油水两相流流型实验研究[J]. 西南石油大学学报(自然科学版), 2019, 41(4): 144-151.

ZHU Shanshan, MOU Xingjie, LI Wang, SONG Xiaoqin, GU Li. An Experimental Study on the Flow Patterns of Oil-water Two-phase Flow in an Upwardly Inclined Pipe[J]. 西南石油大学学报(自然科学版), 2019, 41(4): 144-151.

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上倾管内油水两相流流型实验研究

An Experimental Study on the Flow Patterns of Oil-water Two-phase Flow in an Upwardly Inclined Pipe

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