期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 376, 期 -, 页码 283-288出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.03.019
关键词
Hydrate; Agglomeration; Micromechanical; Cohesion force; Interfacial tension; Liquid bridge; Wettability
资金
- Colorado School of Mines Hydrate Consortium
- BP
- Chevron
- ConocoPhillips
- ExxonMobil
- MultiChem
- Nalco
- Petrobras
- Shell
- SPT Group
- Statoil and Total
- US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (DOE-BES) [DE-FG02-05ER46242]
Hydrate aggregation and deposition are critical factors in determining where and when hydrates may plug a deepwater flowline. We present the first direct measurement of structure II (cyclopentane) hydrate cohesive forces in the water, liquid hydrocarbon and gas bulk phases. For fully annealed hydrate particles, gas phase cohesive forces were approximately twice that obtained in a liquid hydrocarbon phase, and approximately six times that obtained in the water phase. Direct measurements show that hydrate cohesion force in a water-continuous bulk may be only the product of solid-solid cohesion. When excess water was present on the hydrate surface, gas phase cohesive forces increased by a factor of three, suggesting the importance of the liquid or quasi-liquid layer (QLL) in determining cohesive force. Hydrate-steel adhesion force measurements show that, when the steel surface is coated with hydrophobic wax, forces decrease up to 96%. As the micromechanical force technique is uniquely capable of measuring hydrate-surface forces with variable contact time, the present work contains significant implications for hydrate applications in flow assurance. (C) 2012 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据