辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2022, Vol. 42 ›› Issue (5): 57-61.DOI: 10.3969/j.issn.1672-6952.2022.05.009

• 石油与天然气工程(天然气水合物专栏) • 上一篇    下一篇

管壁中不同含水率的气主导体系水合物沉积规律

纪国法1,2(), 梅媛媛1,2, 谯欣柔1,2, 张锦玲1,2   

  1. 1.长江大学 油气钻采工程湖北省重点实验室,湖北 武汉 430100
    2.长江大学 石油工程学院,湖北 武汉 430100
  • 收稿日期:2022-08-12 修回日期:2022-09-20 出版日期:2022-10-25 发布日期:2022-11-18
  • 作者简介:纪国法(1985⁃),男,博士,副教授,从事非常规油气储层改造理论与技术、水合物开采与防治等方面的研究;E⁃mail:jiguofa@163.com
  • 基金资助:
    国家自然科学基金项目(51804042);油气资源与勘探技术教育部重点实验室(长江大学)青年创新团队资助项目(PI2021?04);长江大学大学生创新创业训练计划项目(Yz2021248)

Hydrate Deposition Rule of Gas Dominated System with Different Water Contents in the Pipe

Guofa Ji1,2(), Yuanyuan Mei1,2, Xinrou Qiao1,2, Jinling Zhang1,2   

  1. 1.Hubei Key Laboratory of Drilling and Production Engineering for Oil and Gas,Yangtze University,Wuhan Hubei 430100,China
    2.School of Petroleum Engineering,Yangtze University,Wuhan Hubei 430100,China
  • Received:2022-08-12 Revised:2022-09-20 Published:2022-10-25 Online:2022-11-18

摘要:

管道中多相流动条件下的水合物生成和沉积会形成流动障碍,影响正常的油气生产和运输作业。基于水平环状流气主导体系中水合物易在气相中夹带的液滴中形成或者在管壁上生成的特点,建立管壁中不同含水率的气主导体系水合物沉积模型,分析了水平环状流中不同影响因素下的水合物沉积规律。结果表明,在水平环状流中,随着含水率和过冷度的增大,水平环状流中管壁上的水合物沉积速率逐渐增大,最大沉积速率增至原来的3倍,发生水合物堵塞的风险增大;由冷凝水生成的水合物沉积会随着时间的增加而增大。本研究可为后续相关的水合物堵塞以及水合物防治提供理论参考,具有重要的应用价值。

关键词: 过冷度, 沉积速率, 沉积位置, 气主导体系, 水平环状流, 水合物

Abstract:

Hydrate formation and deposition in multiphase flows in pipelines can cause flow barriers and affect normal oil and gas production and transportation operations. Based on the characteristics that hydrates are easily formed in water droplets entrained in the gas phase or on the pipe wall in the gas?dominated system of the horizontal annular flow, a hydrate deposition model of the gas?dominated system with different water contents in the pipe wall was established, and the hydrate deposition rule under different influence factors of horizontal annular flow conditions were analyzed. The results show that the hydrate deposition rate increases with the water content and undercooling increased on the pipe wall in the horizontal annular flow. The deposition rate can increase three times of the original one, and the risk of hydrate blockage increases. Hydrate deposition from condensed water increases with time. This study can provide theoretical reference for subsequent related hydrate blockage and hydrate prevention and control, and has important application value.

Key words: Supercooling, Deposition rate, Deposition location, Air?dominated systems, Horizontal circulation, Hydrates

中图分类号: 

引用本文

纪国法, 梅媛媛, 谯欣柔, 张锦玲. 管壁中不同含水率的气主导体系水合物沉积规律[J]. 辽宁石油化工大学学报, 2022, 42(5): 57-61.

Guofa Ji, Yuanyuan Mei, Xinrou Qiao, Jinling Zhang. Hydrate Deposition Rule of Gas Dominated System with Different Water Contents in the Pipe[J]. Journal of Liaoning Petrochemical University, 2022, 42(5): 57-61.

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链接本文: http://journal.lnpu.edu.cn/CN/10.3969/j.issn.1672-6952.2022.05.009

               http://journal.lnpu.edu.cn/CN/Y2022/V42/I5/57