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Tight Gas Reservoirs – An Unconventional Natural Energy Source for the Future

With the decline of production and increase in demand of fossil-fuel, economically producing gas from unconventional sources (tight gas, coal bed methane (CBM), and gas hydrate) is a great challenge today. The large volume and long-term potential, attractive gas prices and unprecedented interest in world markets, brings the unconventional gas into the forefront of our energy future. Tight gas exists in underground reservoirs with microdarcy-range permeability and have a huge future potential for production.