On February 15th, several postponed flammable ice drilling operations officially began offshore in the Aimei Peninsula in Aichi Prefecture, Japan. This drilling operation is a preliminary preparation for the production in 2013. It will be actually mined next year and observe the impact of mining on the surrounding environment. If successful, it will be the world's first platform to produce flammable ice on the seabed. The “Earth†deep-sea exploration vessel responsible for drilling hoisted the synthetic diamond drill bit into the sea, descended to the seabed with a depth of about 1000 meters, and then searched for the best drilling location through the remote-controlled robot . Drilled four 260 meters down to reach the flammable ice. The stratum. One of the wells will be used for actual production tests, and the remaining wells will be used to observe changes in the surrounding environment and temperature before and after production. According to the "Japan Energy White Paper 2011", 96% of Japan's energy needs to be imported from abroad, which is a "small energy country." Affected by the Fukushima nuclear accident, most nuclear power plants in Japan have been shut down one after another. It is even possible to stop all nuclear power plants in April this year. At present, they can only rely on increasing natural gas imports to ensure energy supply. According to authoritative sources, in the medium and long term, Japan's demand for natural gas will continue to expand. In addition to taking advantage of the appreciation of the yen and actively acquiring the right to develop oil and gas fields overseas, it is also an important means to increase energy self-sufficiency rate. Combustible ice is generally located at the bottom of the sea 100-300 meters offshore. Japan’s Ministry of Economy, Trade and Industry has found that about 1.14 trillion cubic meters of combustible ice is buried in the eastern trough of Japan, which has already started drilling operations, equivalent to 13.5 years of consumption of Japanese natural gas. In addition, 60,000 square meters of sea areas such as Shikoku, Kyushu and Hokkaido are also containing flammable ice, which can be equivalent to 100 years of consumption of Japanese natural gas. The cost of excavation and production trials is estimated to be 17 billion yen (1 yuan is about 12 yen). If stable mining can be achieved, it will strive to achieve commercial mining in 2018. The Combustion Ice Research Center of the Industrial Technology Research Institute believes that if the experiment is successful, Japan will usher in a major shift in energy strategy. The development of seabed detection technology is the key to promoting Japan's entry into flammable ice. In 2011, Japan successfully developed an unmanned detector that can walk freely on topography such as seabed sand and rocky reefs, and high-performance sonar technology for detecting seabed topography. In 2006, Canada successfully used the “decompression method†to extract combustible ice on land. If this time, the “decompression method†can be successfully applied to seabed mining, it will be the first time in the world to produce combustible ice on the seabed. However, even if flammable ice is successfully mined, it faces the problems of production efficiency of combustible ice, transportation of combustible ice, and production and transportation costs.
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