石油与天然气化工2017，Vol.46Issue(2)：38-43,6.DOI:10.3969/j.issn.1007-3426.2017.02.008
油气混输管道中天然气水合物的形成和堵塞过程研究
Research of natural gas hydrate formation and plugging in mixed transmission pipelines of oil and gas
摘要
Abstract
In order to investigate the hydrates formation and plugging in mixed transmission pipelines of oil and gas, a high pressure test loop is designed specially where natural gas hydrates are formed in diesel oil + water system with a water cut of 70% and an initial liquid flow rate of 2 000 kg/h.The experimental results show that hydrates form simultaneously in the whole pipeline, but the initial formation quantities are different.Tube wall and liquid bulk phase are the two places where hydrates mainly form at the experimental water cut.Without emulsifier, the oil/water emulsion separates at low flow rates.Hydrate particles distribute mainly in the lower liquid phase, which results in an incredible increase in the viscosity and pressure drop.Liquid stratification and the sharp increase in viscosity are the governing reason of plugging.关键词
天然气水合物/生成/堵塞/黏度/压降/分层Key words
natural gas hydrate/formation/plugging/viscosity/pressure drop/stratification分类
能源科技引用本文复制引用
宋光春,李玉星,王武昌,姜凯,赵鹏飞..油气混输管道中天然气水合物的形成和堵塞过程研究[J].石油与天然气化工,2017,46(2):38-43,6.基金项目
国家自然科学基金"水合物颗粒聚集动力学及流动安全研究"(51006120) （51006120）
高等学校博士学科点专项科研基金"天然气水合物生长动力学及快速形成机理研究"(20110133110004). （20110133110004）
