Core scale Evaluation Of Geomechanical Property Related To Gas Production From Gas Hydrate Deposits In The Ulleng Basin, East Sea, Korea

2014 ◽  
Author(s):  
Joo Yong Lee ◽  
Jaehyung Lee ◽  
Se Joon Kim ◽  
Taewoong Ahn
Keyword(s):  
Gas Hydrate ◽  
Gas Production ◽  
East Sea ◽  
Scale Evaluation ◽  
Geomechanical Property ◽  
Gas Hydrate Deposits

scholarly journals Numerical Simulation of Gas Hydrate Production Using the Cyclic Depressurization Method in the Ulleung Basin of the Korea East Sea

2021 ◽  
Vol 11 (20) ◽  
pp. 9748
Author(s):  
Taehun Lee ◽  
Joo Yong Lee ◽  
Taewoong Ahn ◽  
Han Am Son
Keyword(s):  
Numerical Simulation ◽  
Gas Hydrate ◽  
Vertical Displacement ◽  
Gas Production ◽  
East Sea ◽  
Ulleung Basin ◽  
Production Time ◽  
Methane Recovery ◽  
Gas Hydrate Deposits ◽  
Bottomhole Pressure

The depressurization method is known as the most productive and effective method for successful methane recovery from hydrate deposits. However, this method can cause considerable subsidence because of the increased effective stress. Maintenance of geomechanical stability is necessary for sustainable production of gas from gas hydrate deposits. In this study, the cyclic depressurization method, which uses changing the bottomhole pressure and production time during primary and secondary depressurization stage, was utilized in order to increase stability in the Ulleung Basin of the Korea East Sea. Various case studies were conducted with alternating bottomhole pressure and production time of the primary and secondary depressurization stages over 400 days. Geomechanical stability was significantly enhanced, while cumulative gas production was relatively less reduced or nearly maintained. Specially, the cumulative gas production of the 6 MPa case was more than three times higher than that of the 9 MPa case, while vertical displacement was similar between them. Therefore, it was found that the cyclic depressurization method should be applied for the sake of geomechanical stability.

Evaluation and comparison of gas production potential of the typical four gas hydrate deposits in Shenhu area, South China sea

Energy ◽  
2020 ◽  
Vol 204 ◽  
pp. 117955 ◽  
Author(s):  
Li Huang ◽  
Zhenyuan Yin ◽  
Yizhao Wan ◽  
Jianye Sun ◽  
Nengyou Wu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrate ◽  
Gas Production ◽  
Production Potential ◽  
Shenhu Area ◽  
China Sea ◽  
Gas Hydrate Deposits

Evaluation of gas production potential from gas hydrate deposits in National Petroleum Reserve Alaska using numerical simulations

2016 ◽  
Vol 36 ◽  
pp. 760-772 ◽  
Author(s):  
Manish S. Nandanwar ◽  
Brian J. Anderson ◽  
Taiwo Ajayi ◽  
Timothy S. Collett ◽  
Margarita V. Zyrianova
Keyword(s):  
Numerical Simulations ◽  
Gas Hydrate ◽  
Gas Production ◽  
Production Potential ◽  
Gas Hydrate Deposits

scholarly journals Thermal responses of a gas hydrate-bearing sediment to a depressurization operation

RSC Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 5554-5577 ◽  
Author(s):  
K. Yamamoto ◽  
T. Kanno ◽  
X.-X. Wang ◽  
M. Tamaki ◽  
T. Fujii ◽  
...  
Keyword(s):  
Research Program ◽  
Gas Hydrate ◽  
Nankai Trough ◽  
Energy Resource ◽  
Gas Production ◽  
Marine Gas Hydrate ◽  
Gas Hydrate Deposits ◽  
Honshu Island

As a part of a research program aiming to mobilize marine gas hydrate deposits as an energy resource, the worlds' first gas production attempt was performed in early 2013 in the Daini Atsumi Knoll, Eastern Nankai Trough, off Honshu Island, Japan.

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