水平管内水环输送模拟稠油减阻特性

doi:10.16085/j.issn.1000-6613.2020-0674

化工进展 ›› 2021, Vol. 40 ›› Issue (2): 635-641.DOI: 10.16085/j.issn.1000-6613.2020-0674

水平管内水环输送模拟稠油减阻特性

敬加强¹^,²(), 尹晓云¹(), NMASTOBAEV Boris³, RVALEEV Anvar³, 孙杰⁴, 王思汗¹, 刘华平¹, 庄乐泉¹, 范峥嵘¹

^1.西南石油大学石油与天然气工程学院，四川成都 610500
^2.油气消防四川省重点实验室，四川成都 611731
^3.Department of Transport and Storage of Oil and Gas，Ufa State Petroleum Technological University，Russia Ufa 450062
^4.西安交通大学动力工程多相流国家重点实验室，陕西西安 710049

收稿日期:2020-04-27 修回日期:2020-07-05 出版日期:2021-02-05 发布日期:2021-02-09
通讯作者: 尹晓云
作者简介:敬加强（1964—），男，博士，教授，博士生导师，研究方向为非常规原油降黏减阻、复杂油气流动保障、油气储运工程安全。 E-mail：jjq@swpu.edu.cn。
基金资助:
国家自然科学基金(51779212)

Drag reduction characteristics of water annulus transportation of simulated heavy oil in horizontal pipeline

Jiaqiang JING¹^,²(), Xiaoyun YIN¹(), MASTOBAEV Boris N³, VALEEV Anvar R³, Jie SUN⁴, Sihan WANG¹, Huaping LIU¹, Lequan ZHUANG¹, Zhengrong FAN¹

^1.School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China
^2.Oil & Gas Fire Protection Key Laboratory of Sichuan Province, Chengdu 611731, Sichuan, China
^3.Department of Transport and Storage of Oil and Gas, Ufa State Petroleum Technological University, Ufa 450062, Russia
^4.State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China

Received:2020-04-27 Revised:2020-07-05 Online:2021-02-05 Published:2021-02-09
Contact: Xiaoyun YIN

摘要/Abstract

摘要：

基于自主设计加工并搭建的水环输送稠油减阻模拟管路系统，采用500^#白油模拟稠油，试验研究了稠油在水环作用下的水平管流阻力特性，分析了油相表观流速（0.3～1.0m/s）、水相表观流速（0.11～0.72m/s）及入口含水率（0.13～0.49）对水润滑管流流型特征及减阻效果的影响。结果表明：环状水膜可有效隔离并润滑油壁界面，油-水两相流流型总体上呈稳定的偏心环状流结构；水环输送可大幅降低管道输送过程中的压降，其压降值仅为相同油流量下纯油输送压降的1/55～1/27；当入口含水率为0.13～0.27时，水环输送的效能显著，输油效率均高于40；油相表观流速和入口含水率的增加会增大单位管长压降，降低水环输送的减阻效果和输油效能。

关键词: 水平管, 水环, 稠油, 流型, 压降, 减阻

Abstract:

On the basis of self-designed and built pipeline system of drag reduction on water annulus transportation of heavy oil, the flow resistance characteristics of heavy oil simulated by 500^# white oil under the action of water ring in horizontal pipe were experimentally studied. The influence of 0.3—1.0m/s oil superficial velocities, 0.11—0.72m/s water superficial velocities and 0.13—0.49input water volume fractions on the flow patterns characteristics and drag reduction effect of water lubricated pipe flow was analyzed. The experimental results showed that the oil-water two-phase flow exhibits a typical eccentric annular flow pattern, where the annular water film can effectively isolate and lubricate the interface of oil phase and pipe wall. The pressure drop in the process of pipeline transportation can be substantially reduced by the water ring transportation, which is only 1/55—1/27 of the pressure drop when the oil is delivered separately under the same oil flow rate. The oil transportation efficiency was in a high level, which was all above 40, when input water fraction is in the range of 0.13—0.27. With the increase of oil superficial velocity and water input fraction, the pressure drop per unit pipe length increases, while the drag reduction effect and oil delivery efficiency of water annulus conveying decrease.

Key words: horizontal pipeline, water annulus, heavy oil, flow pattern, pressure drop, drag reduction

中图分类号:

TE866

敬加强, 尹晓云, NMASTOBAEV Boris, RVALEEV Anvar, 孙杰, 王思汗, 刘华平, 庄乐泉, 范峥嵘. 水平管内水环输送模拟稠油减阻特性[J]. 化工进展, 2021, 40(2): 635-641.

Jiaqiang JING, Xiaoyun YIN, MASTOBAEV Boris N, VALEEV Anvar R, Jie SUN, Sihan WANG, Huaping LIU, Lequan ZHUANG, Zhengrong FAN. Drag reduction characteristics of water annulus transportation of simulated heavy oil in horizontal pipeline[J]. Chemical Industry and Engineering Progress, 2021, 40(2): 635-641.

图/表 8

图1 白油的流变特性及黏温特性

图2 试验装置

图3 水环发生器

图4 典型流型对比

图5 压力梯度随入口含水率的变化曲线

图6 压力梯度随水表观流速的变化曲线

图7 折算系数随入口含水率的变化曲线

图8 输油效率随入口含水率及混合流速的变化曲线

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水平管内水环输送模拟稠油减阻特性

Drag reduction characteristics of water annulus transportation of simulated heavy oil in horizontal pipeline

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