초록 |
There are extensive amounts of methane stored as natural gas hydrates in the earth’s crust along the oceans and permafrost regions. The global discussion over the most effective means to exploit methane from natural gas hydrates is focused on the development of more feasible techniques that can be adapted in diversified geologic conditions. We suggest a new approach using CO2/air gas that reduces CH4 production costs and enhances the feasibility of field application. The very strong, stable and self-regulating process of exchange (CH4 replaced by CO2/air) occurring in the methane hydrate will work well for most global gas-hydrate reservoirs. |