scholarly journals Elevated gas hydrate saturation within silt and silty clay sediments in the Shenhu area, South China Sea

2011 ◽  
Vol 116 (B5) ◽  
Author(s):  
Xiujuan Wang ◽  
Deborah R. Hutchinson ◽  
Shiguo Wu ◽  
Shengxiong Yang ◽  
Yiqun Guo
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrate ◽  
Silty Clay ◽  
Shenhu Area ◽  
China Sea ◽  
Hydrate Saturation

scholarly journals Gas Hydrate System of Shenhu Area, Northern South China Sea: Geochemical Results

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Nengyou Wu ◽  
Haiqi Zhang ◽  
Shengxiong Yang ◽  
Guangxue Zhang ◽  
Jinqiang Liang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrate ◽  
Northern South China Sea ◽  
River Mouth ◽  
Geochemical Data ◽  
Pearl River Mouth Basin ◽  
Silty Clay ◽  
Shenhu Area ◽  
China Sea

The drilling recovered high-concentration methane hydrates (maximum 26–48%) in a disseminated form in silty clay sediments in Shenhu area of Pearl River Mouth Basin, South China Sea. Combining the geochemical data, the gas hydrate-bearing sediments are 10 m to 43 m in thickness and located just above the base of the gas hydrate stability zone. The methane content is 96.10–99.91% with small amount of ethane and propane. The baseline chlorinity of pore waters shows 10% lower than that of shallow sediments below and inside the gas hydrate zone. The methane/ethane ratios are higher than 1000 above the gas hydrate zone and less than 1000 at the interval of gas hydrate zone. The depth of sulphate methane interface varies from site to site as 17 to 27 mbsf. These results show that the methane of gas hydrate was mainly originated from microbial activity and the upward methane flux is minor. This is evidenced by the δC13CH4 values of headspace gases from the gravity piston cores and released gases from pressure cores, which range from −74.3‰  PDB to −46.2‰  PDB, with the majority less than −55%‰  PDB. The hydrate deposit is a distributed gas hydrate system in Shenhu area.

Gas hydrate saturation from acoustic impedance and resistivity logs in the Shenhu area, South China Sea

2011 ◽  
Vol 28 (9) ◽  
pp. 1625-1633 ◽  
Author(s):  
Xiujuan Wang ◽  
Shiguo Wu ◽  
Myung Lee ◽  
Yiqun Guo ◽  
Shengxiong Yang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrate ◽  
Acoustic Impedance ◽  
Shenhu Area ◽  
China Sea ◽  
Resistivity Logs ◽  
Hydrate Saturation

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
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