二氧化碳水合物浆液在不同含水率下的流动特性

Flow Characteristics of Carbon Dioxide Hydrate Slurry under Different Water Content

伍盛一 刘冠良 董美 顾锦彤

Shengyi WU Guanliang LIU Mei DONG Jintong GU

辽宁石油化工大学 石油天然气工程学院，辽宁 抚顺 113001 中海油深圳海洋工程技术服务有限公司，天津 300459

College of Petroleum Engineering，Liaoning Petrochemical University，Fushun Liaoning 113001，China CNOOC Offshore Engineering Solutions Co. ，Ltd. ，Tianjin 300459，China

石油和天然气行业正努力寻求更好的天然气水合物管理方法，因此需要更好地了解多相流中水合物的形成和堵塞趋势。利用高压可视流动环路研究了二氧化碳水合物的形成和水合物浆液在完全分散和部分分散系统流动条件下的性质。结果表明，在高含水率的完全分散相体系中，气体分子与水的接触面积较大，能够充分地生成水合物，对环路内流量有较大的影响；对于不同含水率条件下的两种体系，由于高含水率体系中的油水界面被破坏得较严重，生成的大量水合物更容易堵塞环路，而低含水率体系中的油水界面在被破坏后能够生成新的油水界面，因此堵管风险较低。深入地了解水合物的形成过程和稳定性，能够准确地预测和应对堵塞的风险，对开发高效水合物管理策略是至关重要的。

As the oil and gas industry strives to find better gas hydrate management methods, it is necessary to better understand the hydrate formation and plugging trend in multiphase flow.The high?pressure visual flow loop is used to study the formation of carbon dioxide gas hydrate and the properties of hydrate slurry under the flow conditions of complete dispersion and partial dispersion system.The results show that for the fully dispersed phase system with high water content, the contact area between gas molecules and water is larger, and hydrate can be fully generated, which has a great impact on the flow in the loop. For the two systems with different water content, because of the oil?water interface in high water content is damaged more violently, a large amount of hydrate is easier to block the loop.The oil?water interface in low water content can be supplemented after being damaged, so the risk of pipe plugging is low.

辽宁省教育厅科学研究经费项目(L2020027)

10.12422/j.issn.1672-6952.2023.06.009