scholarly journals Dissociation of gas hydrates by hydrocarbon migration and accumulation-derived slope failures: An example from the south china sea

2021 ◽  
pp. 101345
Author(s):  
Zhi-Feng Wan ◽  
Wei Zhang ◽  
Chong Ma ◽  
Jin-Qiang Liang ◽  
Ang Li ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
The South China Sea ◽  
Slope Failures ◽  
The South ◽  
Hydrocarbon Migration ◽  
China Sea

scholarly journals Seismic Expression of Polygonal Faults and Its Impact on Fluid Flow Migration for Gas Hydrates Formation in Deep Water of the South China Sea

2011 ◽  
Vol 2011 ◽  
pp. 1-7
Author(s):  
Duanxin Chen ◽  
Shiguo Wu ◽  
Xiujuan Wang ◽  
Fuliang Lv
Keyword(s):  
Fluid Flow ◽  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
Three Dimensional ◽  
The South China Sea ◽  
Normal Faults ◽  
The South ◽  
China Sea ◽  
3D Seismic Data

Polygonal faults were identified from three-dimensional (3D) seismic data in the middle-late Miocene marine sequences of the South China Sea. Polygonal faults in the study area are normal faults with fault lengths ranging from 100 to 1500 m, fault spaces ranging from 40 to 800 m, and throws ranging from 10 to 40 m. Gas hydrate was inferred from the seismic polarity, the reflection strength, and the temperature-pressure equilibrium computation results. Gas hydrates located in the sediments above the polygonal faults layer. Polygonal faults can act as pathways for the migration of fluid flow, which can supply hydrocarbons for the formation of gas hydrates.

The Characteristics of Gas Hydrates Recovered from Shenhu Area in the South China Sea

2012 ◽  
Vol 307-310 ◽  
pp. 22-27 ◽  
Author(s):  
Changling Liu ◽  
Yuguang Ye ◽  
Qingguo Meng ◽  
Xingliang He ◽  
Hailong Lu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
The South China Sea ◽  
The South ◽  
Shenhu Area ◽  
China Sea

scholarly journals Physical Properties of Gas Hydrate-Bearing Pressure Core Sediments in the South China Sea

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jiangong Wei ◽  
Tingting Wu ◽  
Xiuli Feng ◽  
Jinqiang Liang ◽  
Wenjing Li ◽  
...  
Keyword(s):  
South China Sea ◽  
Physical Properties ◽  
Mechanical Behavior ◽  
South China ◽  
Gas Hydrates ◽  
Gas Hydrate ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Hydrate Bearing Sediments

Gas hydrates are a potential future energy resource and are widely distributed in marine sediments and permafrost areas. The physical properties and mechanical behavior of gas hydrate-bearing sediments are of great significance to seafloor stability and platform safety. In 2013, a large number of pressure cores were recovered during China’s second gas hydrate drilling expedition in the South China Sea. In this study, we determined the gas hydrate distribution, saturation, physical properties, and mechanical behavior of the gas hydrate-bearing sediments by conducting Multi-Sensor Core Logger measurements and triaxial and permeability tests. Disseminated gas hydrates, gas hydrate veins, and gas hydrate slabs were observed in the sediments. The gas hydrate distribution and saturation are spatially heterogeneous, with gas hydrate saturations of 0%–55.3%. The peak deviatoric stress of the gas hydrate-bearing sediments is 0.14–1.62 MPa under a 0.15–2.3 MPa effective confining stress. The permeability is 0.006– 0.095 × 10 − 3   μ m 2 , and it decreases with increasing gas hydrate saturation and burial depth.

Application of AVO analysis to gas hydrates identification in the northern slope of the South China Sea

2014 ◽  
Vol 62 (4) ◽  
pp. 802-817 ◽  
Author(s):  
Rui Yang ◽  
Pin Yan ◽  
Nengyou Wu ◽  
Zhibin Sha ◽  
Jinqiang Liang
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
The South China Sea ◽  
Northern Slope ◽  
The South ◽  
China Sea ◽  
Avo Analysis

Estimation of China's production efficiency of natural gas hydrates in the South China Sea

2018 ◽  
Vol 203 ◽  
pp. 1-12 ◽  
Author(s):  
Zhaoyang Kong ◽  
Qingzhe Jiang ◽  
Xiucheng Dong ◽  
Jiang Wang ◽  
Xin Wan
Keyword(s):  
Natural Gas ◽  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
Production Efficiency ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Natural Gas Hydrates

scholarly journals Submarine Landslides and their Distribution in the Gas Hydrate Area on the North Slope of the South China Sea

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3481 ◽  
Author(s):  
Xuemin Wu ◽  
Qianyong Liang ◽  
Yun Ma ◽  
Yaohong Shi ◽  
Zhen Xia ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
Gas Hydrate ◽  
Tectonic Setting ◽  
The South China Sea ◽  
Submarine Landslides ◽  
The South ◽  
China Sea ◽  
Close Relationship

Integrated investigations have revealed abundant resources of gas hydrates on the northern slope of the South China Sea (SCS). Regarding the gas hydrate research of northern SCS, the gas hydrate related environment problem such as seabed landslides were also concentrated on in those areas. Based on 2D seismic data and sub-bottom profiles of the gas hydrate areas, submarine landslides in the areas of Qiongdongnan, Xisha, Shenhu, and Dongsha have been identified, characterized, and interpreted, and the geophysical characteristics of the northern SCS region investigated comprehensively. The results show 6 major landslides in the gas hydrate zone of the northern SCS and 24 landslides in the Shenhu and Dongsha slope areas of the northern SCS. The landslide zones are located mainly at water depths of 200–3000 m, and they occur on the sides of valleys on the slope, on the flanks of volcanoes, and on the uplifted steep slopes above magmatic intrusions. All landslides extend laterally towards the NE or NEE and show a close relationship to the ancient coastline and the steep terrain of the seabed. We speculate that the distribution and development of submarine landslides in this area has a close relationship with the tectonic setting and sedimentary filling characteristics of the slopes where they are located. Seismic activity is the important factor controlling the submarine landslide in Dongsha area, but the important factor controlling the submarine landslides in Shenhu area is the decomposition of natural gas hydrates.

scholarly journals In Situ Raman Detection of Gas Hydrates Exposed on the Seafloor of the South China Sea

2017 ◽  
Vol 18 (10) ◽  
pp. 3700-3713 ◽  
Author(s):  
Xin Zhang ◽  
Zengfeng Du ◽  
Zhendong Luan ◽  
Xiujuan Wang ◽  
Shichuan Xi ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
In Situ Raman

Introduction to special section: Gas hydrates in the South China Sea

2017 ◽  
Vol 5 (3) ◽  
pp. SMi-SMi ◽  
Author(s):  
Guangfa Zhong ◽  
Hongliu Zeng ◽  
Shengxiong Yang ◽  
Jinqiang Liang ◽  
Xuewei Liu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrates ◽  
Special Section ◽  
The South China Sea ◽  
The South ◽  
China Sea
Sign in / Sign up

Export Citation Format

Share Document