集输-S型立管中空气-油两相流流型特征实验研究

海洋工程装备与技术 ›› 2014, Vol. 1 ›› Issue (1): 30-34.

集输-S型立管中空气-油两相流流型特征实验研究

李文升¹, 郭烈锦^1,^*, 李乃良¹, 程兵², 姚海元²

1. 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
2. 中海油研究总院, 北京 100027

收稿日期:2014-01-20 出版日期:2014-01-30 发布日期:2017-12-07
通讯作者: 郭烈锦
作者简介:
李文升(1986--), 男, 博士研究生, 主要从事油气水两相及多相流动方面的研究.
基金资助:
国家科技重大专项(2011ZX05026-004-02);国家自然科学基金创新群体项目(51121092);国家自然科学基金重点项目(51236007)

Experimental Study on Air-Oil Two-Phase Flow Patterns in a Pipeline-Riser System with an S-Shaped Riser

Wen-sheng LI¹, Lie-jin GUO¹, Nai-liang LI¹, Bing CHENG², Hai-yuan YAO²

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
2. CNOOC Research Institute, Beijing 100027, China

Received:2014-01-20 Online:2014-01-30 Published:2017-12-07

摘要/Abstract

摘要：

实验研究了集输-S型立管中空气-油两相流的流型特征.实验管路由119 m的水平段, 长14 m,倾角为-2°的下倾段, 高15.3 m,长24 m的S型立管段组成, 管道内径为50.8 mm.基于S型立管底部压力,立管顶部持液率两个信号来区分立管内的流型.实验中发现S型立管内存在第二类严重段塞流,过渡型严重段塞流和稳定流动三类流型, 其中稳定流动又包括泡状流,弹状流和环状流.与空气-水两相流不同, 并没有观察到第一类严重段塞流.第二类严重段塞流下立管顶部持液率呈方波状, 其概率密度函数(PDF)分布系以0与1为峰的双峰结构; 过渡型严重段塞流下立管顶部持液率针刺状, 其PDF分布基本系以0为峰的单峰结构; 稳定流动下顶部持液率波动平稳, 其PDF分布在0.3~0.8之间.

关键词: 严重段塞流, 集输-S型立管, 空气-油两相流, 流型

Abstract:

Experiments on flow patterns during air-oil two-phase flow in a long pipeline-riser system with an S-shaped riser are carried out. The test loop with 50.8 mm internal diameter consists of a horizontal pipeline with 119 m in length, followed by a 14 m downward inclined section, and ended at an S-shaped flexible riser with 24 m in length, 15.3 m in height. The inclination angle of the downward section is -2° from the horizontal pipeline. Based on the analysis of the pressure at the riser base and liquid holdup at the riser top, the flow regimes observed are classified into three categories: severe slugging of type 2 (SS2), transition flow (TRS), stable flow (including bubble flow, slug flow and annular flow). In contrast with air-water two-phase flow, there is no sign of severe slugging of type 1 in the present study. As for SS2, the probability density function (PDF) of liquid holdup presents a bimodal distribution with two peaks at H_L = 0 and H_L = 1, respectively. As for TRS, the PDF curve produced by liquid holdup data presents a unimodal distribution with a single narrow peak at H_L = 0. As for stable flow, the PDF of liquid holdup presents a bimodal distribution between H_L = 0.3 and H_L = 0.8.

Key words: severe slugging, pipeline-S-shaped riser, air-oil two-phase flow, flow pattern

中图分类号:

TE83

李文升, 郭烈锦, 李乃良, 程兵, 姚海元. 集输-S型立管中空气-油两相流流型特征实验研究[J]. 海洋工程装备与技术, 2014, 1(1): 30-34.

Wen-sheng LI, Lie-jin GUO, Nai-liang LI, Bing CHENG, Hai-yuan YAO. Experimental Study on Air-Oil Two-Phase Flow Patterns in a Pipeline-Riser System with an S-Shaped Riser[J]. Ocean Engineering Equipment and Technology, 2014, 1(1): 30-34.

图/表 5

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