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Investigation of the Flow Characteristics of Methane Hydrate Slurries with Low Flow Rates
Tang, Cuiping1,2,3,4; Zhao, Xiangyong1,2,3,4; Li, Dongliang1,2,3,4; He, Yong1,2,3,4; Shen, Xiaodong1,2,3,4; Liang, Deqing1,2,3,4
2017
发表期刊ENERGIES
卷号10期号:1
摘要Gas hydrate blockage in pipelines during offshore production becomes a major problem with increasing water depth. In this work, a series of experiments on gas hydrate formation in a flow loop was performed with low flow rates of 0.33, 0.66, and 0.88 m/s; the effects of the initial subcooling, flow rate, pressure, and morphology were investigated for methane hydrate formation in the flow loop. The results indicate that the differential pressure drop (Delta P) across two ends of the horizontal straight pipe increases with increasing hydrate concentration at the early stage of gas hydrate formation. When the flow rates of hydrate fluid are low, the higher the subcooling is, the faster the transition of the hydrates macrostructures. Gas hydrates can agglomerate, and sludge hydrates appear at subcoolings of 6.5 and 8.5 degrees C. The difference between the Delta P values at different flow rates is small, and there is no obvious influence of the flow rates on Delta P. Three hydrate macrostructures were observed: slurry-like, sludge-like, and their transition. When the initial pressure is 8.0 MPa, large methane hydrate blockages appear at the gas hydrate concentration of approximately 7%. Based on the gas-liquid two-phase flow model, a correlation between the gas hydrate concentration and the value of Delta P is also presented. These results can enrich the kinetic data of gas hydrate formation and agglomeration and provide guidance for oil and gas transportation in pipelines.
文章类型Article
关键词Natural Gas Hydrate Flow Assurance Slurry Sludge Flow Characteristics
WOS标题词Science & Technology ; Technology
资助者National Natural Science Foundation of China(50906087) ; National Natural Science Foundation of China(50906087)
DOI10.3390/en10010145
研究领域[WOS]Energy & Fuels
关键词[WOS]WATER CUT SYSTEMS ; GAS HYDRATE ; ICE-SLURRY ; CRUDE-OIL ; INHIBITORS ; VISCOSITY ; EMULSION ; LOOP ; MODEL
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(50906087) ; National Natural Science Foundation of China(50906087)
WOS类目Energy & Fuels
WOS记录号WOS:000392422500144
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/14017
专题中国科学院广州能源研究所
天然气水合物基础研究实验室
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
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GB/T 7714
Tang, Cuiping,Zhao, Xiangyong,Li, Dongliang,et al. Investigation of the Flow Characteristics of Methane Hydrate Slurries with Low Flow Rates[J]. ENERGIES,2017,10(1).
APA Tang, Cuiping,Zhao, Xiangyong,Li, Dongliang,He, Yong,Shen, Xiaodong,&Liang, Deqing.(2017).Investigation of the Flow Characteristics of Methane Hydrate Slurries with Low Flow Rates.ENERGIES,10(1).
MLA Tang, Cuiping,et al."Investigation of the Flow Characteristics of Methane Hydrate Slurries with Low Flow Rates".ENERGIES 10.1(2017).
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