Journal
ENERGY & FUELS
Volume 35, Issue 11, Pages 9137-9150Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.1c00485
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Categories
Funding
- China Geological Survey [DD20190102]
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China has been focusing on the research and development of natural gas hydrate resources, with multiple hydrate accumulations discovered in regions such as the South China Sea, East China Sea, and Qinghai-Tibet Plateau. The estimated total reserve of natural gas hydrates in China is 131.1 trillion cubic meters. Since 2011, China has conducted five successful field tests of gas hydrates, with commercial production expected to begin in the 2030s.
China has been attaching great importance to research on natural gas hydrate resources. Since the mid-1990s, China has experienced three stages of resource prediction, investigation, and test production. Until now, five hydrate accumulations have been discovered by drilling and sampling in the Shenhu, Dongsha, Qiongdongnan Basins, and offshore Taiwan of the South China Sea and in the Muli area of Qilian Mountain, and seven hydrates have been inferred by various indicators, including geology, geophysics and geochemistry in the South China Sea, the East China Sea, and the Qinghai-Tibet Plateau. According to the hydrate stability zone, the natural gas hydrate resources in the South China Sea are estimated to be 64.6 x 10(12) m(3), those in the East China Sea are similar to 28.5 x 10(12) m(3), and those in the terrestrial permafrost are similar to 38 x 10(12) m(3). The total amount of the natural gas hydrates in China reaches up to 131.1 x 10(12) m(3), which is twice the amount of China's conventional natural gas resources. China has successfully conducted the five field test production of gas hydrates in the Muli permafrost region of Qilian Mountain and in Shenhu area of the South China Sea since 2011, in particular first using horizontal well technologies to exploit hydrates that occurred in the fine-grained reservoirs. It is expected that commercial production from the hydrate reservoir will come true in the 2030s.
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