scholarly journals Effect of Bed Deformation on Natural Gas Production from Hydrates

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Mohamed Iqbal Pallipurath
Keyword(s):  
Natural Gas ◽  
Gas Production ◽  
Thermal Stimulation ◽  
Natural Gas Hydrate ◽  
Bed Deformation ◽  
Sediment Bed ◽  
Finite Element Package ◽  
Modelling Studies ◽  
Sediment Deformation ◽  
Stimulation Of

This work is based on modelling studies in an axisymmetric framework. The thermal stimulation of hydrated sediment is taken to occur by a centrally placed heat source. The model includes the hydrate dissociation and its effect on sediment bed deformation and resulting effect on gas production. A finite element package was customized to simulate the gas production from natural gas hydrate by considering the deformation of submarine bed. Three sediment models have been used to simulate gas production. The effect of sediment deformation on gas production by thermal stimulation is studied. Gas production rate is found to increase with an increase in the source temperature. Porosity of the sediment and saturation of the hydrate both have been found to significantly influence the rate of gas production.

Assessment of gas production from natural gas hydrate using depressurization, thermal stimulation and combined methods

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47357-47367 ◽  
Author(s):  
Yongchen Song ◽  
Lunxiang Zhang ◽  
Qin Lv ◽  
Mingjun Yang ◽  
Zheng Ling ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Hydrate ◽  
Industrial Production ◽  
Gas Production ◽  
Thermal Stimulation ◽  
Methane Hydrates ◽  
Natural Gas Hydrate ◽  
Combined Methods

The largest sources of hydrocarbons worldwide are distributed in the permafrost and submarine in the form of methane hydrates, but exploitation of these hydrocarbons is still years away from industrial production; thus, further research is needed.

scholarly journals A Solution to Sand Production from Natural Gas Hydrate Deposits with Radial Wells: Combined Gravel Packing and Sand Screen

2022 ◽  
Vol 10 (1) ◽  
pp. 71
Author(s):  
Yiqun Zhang ◽  
Wei Wang ◽  
Panpan Zhang ◽  
Gensheng Li ◽  
Shouceng Tian ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Hydrate ◽  
Control Method ◽  
Gas Production ◽  
Sand Production ◽  
Natural Gas Hydrate ◽  
Vertical Well ◽  
Sand Control ◽  
Gravel Packing ◽  
Radial Well

Sand production is one of the main problems restricting the safe, efficient and sustainable exploitation of marine natural gas hydrate. To explore the sand-control effects of gravel packing, experiments that simulate hydrate extraction in the water-rich environment were conducted with designed hydrate synthesis and exploitation devices. Three sand control completion methods, including 120 mesh sand screen, 400 mesh sand screen, 120 mesh sand screen combined with gravel packing, are adopted. Sand and gas production rates were compared under different well types and sand control completion methods. Results show that the gas production modes of radial wells and vertical wells are almost the same at the same time due to the small experimental scale and high permeability. The sand production of the vertical well with gravel packing combined with a sand-control screen is 50% lower than that of the vertical well with sand-control screens only. Radial well with gravel packing combined with sand-control screens produced 87% less sand than screen mesh alone. The cumulative gas production and recovery rates of a radial well with the composite sand control method are better than those without gravel packing in the same development time.

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