Effect of silica sand size and saturation on methane hydrate formation in the presence of SDS

2018 ◽  
Vol 56 ◽  
pp. 266-280 ◽  
Author(s):  
Zhen Pan ◽  
Zhiming Liu ◽  
Zhien Zhang ◽  
Liyan Shang ◽  
Shihui Ma
Keyword(s):  
Methane Hydrate ◽  
Hydrate Formation ◽  
Silica Sand ◽  
Sand Size

Methane hydrate formation in a test sediment of sand and clay at various levels of water saturation

2015 ◽  
Vol 93 (8) ◽  
pp. 874-881 ◽  
Author(s):  
Asheesh Kumar ◽  
Tushar Sakpal ◽  
Sudip Roy ◽  
Rajnish Kumar
Keyword(s):  
Methane Hydrate ◽  
Water Saturation ◽  
Hydrate Formation ◽  
Bentonite Clay ◽  
Silica Sand ◽  
Void Space ◽  
Pure Silica ◽  
Fine Clay ◽  
Pressure Water ◽  
Test Sediment

Kinetics of methane hydrate formation with different ratios of silica sand and clay and different water saturations were studied. At suitable temperature and methane gas pressure, water in the void spaces of silica sand packing and intercalated area of clay were converted into hydrate. It was observed that the rate of hydrate formation increases with higher void space in the packing, and addition of clay in test sediment decreases water to hydrate conversion as well as rate of hydrate formation. Maximum water to hydrate conversion of 60.0% was achieved in pure silica sand bed at 75% water saturation. Presence of fine clay particles is expected to reduce the void spaces and thus may hinder effective mass transfer of hydrate forming gases in the bed. However, it is also possible that the bentonite clay used in this work may actually inhibit hydrate growth. Additional experiments in stirred tank reactor were carried out to understand the inhibiting effect of bentonite clay for hydrate formation.

Carboxylate Surfactants as Efficient and Renewable Promoters for Methane Hydrate Formation

2021 ◽  
Author(s):  
Xuejian Liu ◽  
Quan Cao ◽  
Dongyan Xu ◽  
Shengjun Luo ◽  
Rongbo Guo
Keyword(s):  
Methane Hydrate ◽  
Hydrate Formation

Investigation on Methane Hydrate Formation in Water-based Drilling Fluid

2021 ◽  
Vol 35 (6) ◽  
pp. 5264-5270
Author(s):  
Yong He ◽  
Zhen Long ◽  
Jingsheng Lu ◽  
Lingli Shi ◽  
Wen Yan ◽  
...  
Keyword(s):  
Methane Hydrate ◽  
Drilling Fluid ◽  
Hydrate Formation ◽  
Water Based

scholarly journals Numerical simulation of CH4 hydrate formation in fractures

2018 ◽  
Vol 36 (5) ◽  
pp. 1279-1294 ◽  
Author(s):  
Sheng-Li Li ◽  
You-Hong Sun ◽  
Kai Su ◽  
Wei Guo ◽  
You-Hai Zhu
Keyword(s):  
Methane Hydrate ◽  
Hydrate Formation ◽  
Growth Behavior ◽  
Fractured Media ◽  
Initial Condition ◽  
Insulation Layer ◽  
Hydrate Dissociation ◽  
Fracture Size ◽  
The Media ◽  
Gas Supply

Fracture-hosted methane hydrate deposits exist at many sites worldwide. The growth behavior of CH4 hydrate in fractured media was simulated by TOUGH + HYDRATE (T + H) code. The effects of fracture size, initial condition, and salinity on the growth behavior of hydrate in fractures were investigated. In general, the hydrate layer grew from the two ends and gradually covered on the surface of the fracture. With the formation of hydrate in fractures, the temperature increased sharply since the hydrate acted as a thermal insulation layer. In longer fractures, fast growth of hydrate at the ends of the fracture led to the formation of hydrate plugs with high saturation (called as stopper). In narrower fractures, hydrate dissociation occurred in the middle of the fracture during hydrate growing in the whole fracture due to the cutoff of gas supply by the stopper at the ends. At a low initial subcooling, hydrate formed both on the surface and in the micropores of the media, which was different from that at higher subcooling. In salt solution, the formation of hydrate stopper was inhibited by the salt-removing effect of hydrate formation and the growth of hydrate was more sustainable.

The impact of mono-ethylene glycol and kinetic inhibitors on methane hydrate formation

2021 ◽  
pp. 131531
Author(s):  
Vincent W.S. Lim ◽  
Peter J. Metaxas ◽  
Michael L. Johns ◽  
Zachary M. Aman ◽  
Eric F. May
Keyword(s):  
Ethylene Glycol ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
The Impact
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