A review on the gas hydrate research in China

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

“…Since 1999, high-resolution multichannel seismic surveys and three-dimensional seismic survey have been carried out for gas hydrate resource studies in the northern South China Sea. BSRs have been identified in the Xisha Trough (Wu et al, 2005), Qiongdongnan Basin , in Pearl River Mouth basin (Guo et al, 2004) and in the Taixinan Basin of the northern South China Sea Zhang et al, 2002;Wang et al, 2006). In AprileJune of 2007, eight sites were drilled by the Guangzhou Marine Geological Survey (GMGS), China Geological Survey (CGS), and the Ministry of Land and Resources of China by using M/V Bavenit along with Fugro and Geotek equipments in Shenhu area, Pearl River Mouth basin, the northern of SCS See Fig.…”

Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea

“…High-resolution multichannel 2D and 3D seismic surveys have been carried out for gas hydrate resource studies in the northern SCS. BSRs have been identified in the Xisha Trough [19], Qiongdongnan (QDN) Basin [11], in Pearl River Mouth basin (PRMB) [20] and in the Taixinan Basin of the northern SCS [21,22]. In the PRM basin, modern submarine canyons have been identified, which are sublinear, subparallel, regularly-spaced extending from the shelf-break at 450 m water depth to their terminations at 1500 m water depth on the north flank [23].…”

Early Diagenesis Records and Pore Water Composition of Methane-Seep Sediments from the Southeast Hainan Basin, South China Sea

“…The evidences for gas hydrates or deep water oil (gas) reservoirs and the relationship between authigenic mineral, geochemistry of pore waters, and methane seep in shallow sediments were discussed here. Oil-and gas-bearing depositional basins on the northern continental slope of the South China Sea were developed during the late Cenozoic [10][11][12], when a strong extrusion phase followed a period of rift extension and sea-floor spreading 30∼24 Ma ago. The area (Figure 1) is characterized by frequent tectonic and magmatic episodes, slope slumps, high heat flux (average about 75 mW/m 2 ), abundant thermogenic gas and biogas in shallow sediments, carbon dioxide and nitrogen-rich gas.…”