水平管内黏稠油水环输送的稳定性

doi:10.11885/j.issn.1674-5086.2020.12.04.01

西南石油大学学报(自然科学版) ›› 2023, Vol. 45 ›› Issue (2): 107-116.DOI: 10.11885/j.issn.1674-5086.2020.12.04.01

水平管内黏稠油水环输送的稳定性

尹晓云^1,2, 苏明^1,2, 周鑫³, 张良^1,2, 敬加强^4,5

1. 中国石油西南油气田分公司安全环保与技术监督研究院, 四川成都 610041;
2. 页岩气评价与开采四川省重点实验室, 四川成都 610041;
3. 国家管网集团西南管道有限责任公司建设项目管理中心, 四川成都 610094;
4. 西南石油大学石油与天然气工程学院, 四川成都 610500;
5. 油气消防四川省重点实验室, 四川成都 611731

收稿日期:2020-12-04 发布日期:2023-05-05
通讯作者: 敬加强,E-mail:jjq@swpu.edu.cn
作者简介:尹晓云,1995年生,女,汉族,四川成都人,博士,主要从事油气集输多相流、节能低碳方面的研究。E-mail:yinxy0122@163.com
苏明,1996年生,男,汉族,四川广安人,硕士,主要从事节能低碳方面的研究工作。E-mail:sum0826@petrochina.com.cn
周鑫,1986年生,男,汉族,甘肃永昌人,工程师,硕士,主要从事油气集输工程项目建设、设备采购及供应链管理方面的研究。E-mail:zhouxin01@pipechina.com.cn
张良,1984年生,男,汉族,四川成都人,高级工程师,硕士,主要从事油气田开发安全管理方面的研究。E-mail:zhliang01@petrochina.com.cn
敬加强,1964年生,男,汉族,四川遂宁人,教授,博士研究生导师,主要从事非常规原油降黏减阻、复杂油气流动保障、油气储运工程安全方面的研究。E-mail:jjq@swpu.edu.cn
基金资助:
国家自然科学基金(51779212)；国家自然科学基金企业创新发展联合基金(U19B2012)

Stability of Water Annulus Transportation of Heavy Oil in Horizontal Pipeline

YIN Xiaoyun^1,2, SU Ming^1,2, ZHOU Xin³, ZHANG Liang^1,2, JING Jiaqiang^4,5

1. Safety, Environment and Technology Supervision Research Institute, Southwest Oil and Gas Field Company, PetroChina, Chengdu, Sichuan 610041, China;
2. Key Laboratory of Shale Gas Evaluation and Exploitation of Sichuan Province, Chengdu, Sichuan 610041, China;
3. Construction Project Management Center, PipeChina Southwest Pipeline Co. Ltd., Chengdu, Sichuan 610094, China;
4. Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
5. Key Laboratory of Oil & Gas Fire Protection of Sichuan Province, Chengdu, Sichuan 611731, China

Received:2020-12-04 Published:2023-05-05

摘要/Abstract

摘要： 采用FLUENT软件，基于VOF两相流模型、标准$k$-$\varepsilon$湍流模型及CSF表面张力模型，模拟了油-水环状流在水平管中的流动情况，分析了流体性质(油-水密度差、油-水黏度比、油-水界面张力)对油水两相分布特征及水环结构稳定特性的影响。模拟结果表明，流体性质对截面平均含油率基本无影响，在不同模拟工况下均约为73%。但其对油水两相体积分数分布和水环稳定性评价指标(油芯偏心率、水环维稳长度比、管输压降)有显著影响，在模拟条件下，油-水环状流总体上呈上薄下厚的水层包裹位于管道上部的核心油流的偏心形态；当油相密度为996.4 kg/m$^3$，油相黏度为1 743.3 mPa·s，油-水界面张力为22.36 mN/m时，水环的稳定性最好。

关键词: 水平管, 稠油, 水环, 稳定性, 数值模拟

Abstract: In the present study, simulations for oil-water annular flow through a horizontal pipe were performed by FLUENT software based on VOF two-phase flow model, standard $k-\varepsilon$ turbulence model, and CSF surface tension model. The influences of fluid properties (oil-water density difference, oil-water viscosity ratio, and oil-water interfacial tension) on the distribution of oil-water two-phase and the stability performance of water annulus structure were analyzed. The simulation results indicate that the oil-water properties have no effect on the area-weighted average of the oil volume fraction, which is about 73% in various working conditions. However, they have a significant impact on the volume fraction distribution rules of oil-water two-phase and the stability evaluation indexes of water annulus structure (oil core eccentricity, stable length ratio of annular flow, and pipeline pressure drop). Under the simulated conditions, the oil-water annular flow in a typical eccentric form, where the oil-core located in the upper part of the pipe is wrapped by the upper thin and lower thick water layer. The stability of water annulus is at the best when the oil phase density is 996.4 kg/m$^3$, the oil phase viscosity is 1 743.3 mPa·s, and the oil-water interfacial tension is 22.36 mN/m.

Key words: horizontal pipeline, heavy oil, water annulus, stability, numerical simulation

中图分类号:

TE866

尹晓云, 苏明, 周鑫, 张良, 敬加强. 水平管内黏稠油水环输送的稳定性[J]. 西南石油大学学报(自然科学版), 2023, 45(2): 107-116.

YIN Xiaoyun, SU Ming, ZHOU Xin, ZHANG Liang, JING Jiaqiang. Stability of Water Annulus Transportation of Heavy Oil in Horizontal Pipeline[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(2): 107-116.

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水平管内黏稠油水环输送的稳定性

Stability of Water Annulus Transportation of Heavy Oil in Horizontal Pipeline

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