天然ガスの地下備蓄 : 21世紀日本のエネルギー安全保障と環境政策
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概要
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Although their importance in supplying its domestic oil and gas is insignificant, Japan has some 60 voil/gas fields, all of which are small in size. They are mostly located along the coast of the Sea of Japan, in Honshu Island, and many of them are at nearly depleted stages. It is proposed that the principal pipeline system which brings natural gas from the Siberian Far East to Japan is to be built along the Japan Sea Coast, so that the pipeline will pass through the district including these oil/gas fields. It is recommended that the some of these fields are to be used for underground gas storage. The advantages of storing natural gas in depleted fields are 1) There is no need for new, major investment to construct both surface and subsurface infrastructures because they were already made when the field was developed, 2) Suitability of seal, trap and reservoir for gas storage has been known or tested, 3) They are generally much safer than any storages on the surface (this is particularly important in an earthquake-prone country such as Japan), and 4) Domestic storage of gas is beneficial for satisfying stable and reliable supply of natural gas and taking advantages on the international gas market. With respect to the underground storage of carbon dioxide, aquifers above the depleted gas reservoirs at some fields are being tested for sealing and storage capacities. To slow the global warming, underground storage of carbon dioxide released from thermal power plants, steel and cement factories, etc. is believed to be important.
- 島根県立大学の論文
- 2003-08-22