A new calculation method and model of hydrate slurry flow of the multiphase pipeline in deep water gas field

IF 4.8 Q2 ENERGY & FUELS Journal of Pipeline Science and Engineering Pub Date : 2023-03-01 DOI:10.1016/j.jpse.2022.100104

Yan Gao , Yue Xu , Kunming Song , Qingping Li , Haiyuan Yao , Haihong Chen , Wuchang Wang , Yuxing Li

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引用次数: 2

Abstract

The transportation environment of multiphase pipelines in deepwater gas fields is likely to cause the problem of hydrate flow safety. Aiming at the gas-liquid-solid three-phase flow problem containing hydrate, a hydrate slurry flow model for a multiphase pipeline in a deep-water gas field was developed based on the two-fluid model coupled with the population balance equation, and a mesh was carried out for the axial distance of pipeline and size difference of hydrate particles to obtain a transient solution. The multiphase flow characteristics of the pipeline are simulated upon engineering scale, the transient flow characteristics of gas and liquid phases, the aggregation and fragmentation characteristics of hydrate particles, and the coupling interaction between them were studied, which lays the foundation for further research on the characteristics of hydrate particle deposition and blockage based on particle size distribution. This study provides support for the safety of hydrate flow in multiphase pipelines in deepwater gas fields.

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提出了一种新的深水气田多相管道水合物浆体流动计算方法和模型

深水气田多相管道的输送环境容易造成水合物流动安全问题。针对含水合物气-液-固三相流动问题，基于两流体模型和种群平衡方程，建立了深水气田多相管道水合物浆体流动模型，并对管道轴向距离和水合物颗粒粒径差进行网格划分，得到了瞬态解。在工程尺度上模拟了管道多相流动特性，研究了气液相瞬态流动特性、水合物颗粒聚集破碎特性及其耦合相互作用，为进一步研究基于粒径分布的水合物颗粒沉积和堵塞特性奠定了基础。该研究为深水气田水合物在多相管道中的安全流动提供了依据。

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来源期刊

Journal of Pipeline Science and Engineering

CiteScore

7.50

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0.00%

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